bgpd: Fix memory leak bgp show command #3

patrasar · 2018-08-17T06:50:05Z

Root Cause: In the function bgp_show_table(), we are creating a
json object and a json array with the same name as “json_paths”.
First it will create a json object variable "json_paths" pointing
to the memory allocated for the json object. Then it will create
a json array for each bap node rn (if rn->info is available) with
the same name as json_paths. Because of this, json_paths which was
pointing to the memory allocated for the json object earlier, now
will be overwritten with the memory allocated for the json array.
As per the existing code, at the end of each iteration loop of bgp
node, it will deallocate the memory used by the json array and
assigned NULL to the variable json_paths. Since we don’t have the
pointer pointing to the memory allocated for json object, will be
not able to de-allocate the memory, which is a memory leak here.

Fix: Removing this json object since it is never getting used in
this function.

Signed-off-by: Sarita Patra saritap@vmware.com

json object and a json array with the same name as “json_paths”. First it will create a json object variable "json_paths" pointing to the memory allocated for the json object. Then it will create a json array for each bap node rn (if rn->info is available) with the same name as json_paths. Because of this, json_paths which was pointing to the memory allocated for the json object earlier, now will be overwritten with the memory allocated for the json array. As per the existing code, at the end of each iteration loop of bgp node, it will deallocate the memory used by the json array and assigned NULL to the variable json_paths. Since we don’t have the pointer pointing to the memory allocated for json object, will be not able to de-allocate the memory, which is a memory leak here. Fix: Removing this json object since it is never getting used in this function. Testing: Reproduced the memory leak with valgrind. With the fix, memory leak gets resolved and checked with valgrind.

If path->net is NULL in the bgp_path_info_free() function, then bgpd would crash in bgp_addpath_free_info_data() with the following backtrace: (gdb) bt #0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51 #1 0x00007ff7b267a42a in __GI_abort () at abort.c:89 #2 0x00007ff7b39c1ca0 in core_handler (signo=11, siginfo=0x7ffff66414f0, context=<optimized out>) at lib/sigevent.c:249 #3 <signal handler called> #4 idalloc_free_to_pool (pool_ptr=pool_ptr@entry=0x0, id=3) at lib/id_alloc.c:368 FRRouting#5 0x0000560096246688 in bgp_addpath_free_info_data (d=d@entry=0x560098665468, nd=0x0) at bgpd/bgp_addpath.c:100 FRRouting#6 0x00005600961bb522 in bgp_path_info_free (path=0x560098665400) at bgpd/bgp_route.c:252 FRRouting#7 bgp_path_info_unlock (path=0x560098665400) at bgpd/bgp_route.c:276 FRRouting#8 0x00005600961bb719 in bgp_path_info_reap (rn=rn@entry=0x5600986b2110, pi=pi@entry=0x560098665400) at bgpd/bgp_route.c:320 FRRouting#9 0x00005600961bf4db in bgp_process_main_one (safi=SAFI_MPLS_VPN, afi=AFI_IP, rn=0x5600986b2110, bgp=0x560098587320) at bgpd/bgp_route.c:2476 FRRouting#10 bgp_process_wq (wq=<optimized out>, data=0x56009869b8f0) at bgpd/bgp_route.c:2503 FRRouting#11 0x00007ff7b39d5fcc in work_queue_run (thread=0x7ffff6641e10) at lib/workqueue.c:294 FRRouting#12 0x00007ff7b39ce3b1 in thread_call (thread=thread@entry=0x7ffff6641e10) at lib/thread.c:1606 FRRouting#13 0x00007ff7b39a3538 in frr_run (master=0x5600980795b0) at lib/libfrr.c:1011 FRRouting#14 0x000056009618a5a3 in main (argc=3, argv=0x7ffff6642078) at bgpd/bgp_main.c:481 Add a null-check protection to fix this problem. Signed-off-by: Renato Westphal <renato@opensourcerouting.org>

Our Address Sanitizer CI is finding this issue: error 09-Oct-2019 19:28:33 r4: bgpd triggered an exception by AddressSanitizer error 09-Oct-2019 19:28:33 ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7ffdd425b060 at pc 0x00000068575f bp 0x7ffdd4258550 sp 0x7ffdd4258540 error 09-Oct-2019 19:28:33 READ of size 1 at 0x7ffdd425b060 thread T0 error 09-Oct-2019 19:28:33 #0 0x68575e in prefix_cmp lib/prefix.c:776 error 09-Oct-2019 19:28:33 #1 0x5889f5 in rfapiItBiIndexSearch bgpd/rfapi/rfapi_import.c:2230 error 09-Oct-2019 19:28:33 #2 0x5889f5 in rfapiBgpInfoFilteredImportVPN bgpd/rfapi/rfapi_import.c:3520 error 09-Oct-2019 19:28:33 #3 0x58b909 in rfapiProcessWithdraw bgpd/rfapi/rfapi_import.c:4071 error 09-Oct-2019 19:28:33 #4 0x4c459b in bgp_withdraw bgpd/bgp_route.c:3736 error 09-Oct-2019 19:28:33 FRRouting#5 0x484122 in bgp_nlri_parse_vpn bgpd/bgp_mplsvpn.c:237 error 09-Oct-2019 19:28:33 FRRouting#6 0x497f52 in bgp_nlri_parse bgpd/bgp_packet.c:315 error 09-Oct-2019 19:28:33 FRRouting#7 0x49d06d in bgp_update_receive bgpd/bgp_packet.c:1598 error 09-Oct-2019 19:28:33 FRRouting#8 0x49d06d in bgp_process_packet bgpd/bgp_packet.c:2274 error 09-Oct-2019 19:28:33 FRRouting#9 0x6b9f54 in thread_call lib/thread.c:1531 error 09-Oct-2019 19:28:33 FRRouting#10 0x657037 in frr_run lib/libfrr.c:1052 error 09-Oct-2019 19:28:33 FRRouting#11 0x42d268 in main bgpd/bgp_main.c:486 error 09-Oct-2019 19:28:33 FRRouting#12 0x7f806032482f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f) error 09-Oct-2019 19:28:33 FRRouting#13 0x42bcc8 in _start (/usr/lib/frr/bgpd+0x42bcc8) error 09-Oct-2019 19:28:33 error 09-Oct-2019 19:28:33 Address 0x7ffdd425b060 is located in stack of thread T0 at offset 240 in frame error 09-Oct-2019 19:28:33 #0 0x483945 in bgp_nlri_parse_vpn bgpd/bgp_mplsvpn.c:103 error 09-Oct-2019 19:28:33 error 09-Oct-2019 19:28:33 This frame has 5 object(s): error 09-Oct-2019 19:28:33 [32, 36) 'label' error 09-Oct-2019 19:28:33 [96, 108) 'rd_as' error 09-Oct-2019 19:28:33 [160, 172) 'rd_ip' error 09-Oct-2019 19:28:33 [224, 240) 'prd' <== Memory access at offset 240 overflows this variable error 09-Oct-2019 19:28:33 [288, 336) 'p' error 09-Oct-2019 19:28:33 HINT: this may be a false positive if your program uses some custom stack unwind mechanism or swapcontext error 09-Oct-2019 19:28:33 (longjmp and C++ exceptions *are* supported) error 09-Oct-2019 19:28:33 SUMMARY: AddressSanitizer: stack-buffer-overflow lib/prefix.c:776 prefix_cmp error 09-Oct-2019 19:28:33 Shadow bytes around the buggy address: error 09-Oct-2019 19:28:33 0x10003a8435b0: 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00 00 00 00 error 09-Oct-2019 19:28:33 0x10003a8435c0: 00 00 00 00 00 00 00 00 00 00 f3 f3 f3 f3 f3 f3 error 09-Oct-2019 19:28:33 0x10003a8435d0: f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 error 09-Oct-2019 19:28:33 0x10003a8435e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 error 09-Oct-2019 19:28:33 0x10003a8435f0: f1 f1 04 f4 f4 f4 f2 f2 f2 f2 00 04 f4 f4 f2 f2 error 09-Oct-2019 19:28:33 =>0x10003a843600: f2 f2 00 04 f4 f4 f2 f2 f2 f2 00 00[f4]f4 f2 f2 error 09-Oct-2019 19:28:33 0x10003a843610: f2 f2 00 00 00 00 00 00 f4 f4 f3 f3 f3 f3 00 00 error 09-Oct-2019 19:28:33 0x10003a843620: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 error 09-Oct-2019 19:28:33 0x10003a843630: 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 02 f4 error 09-Oct-2019 19:28:33 0x10003a843640: f4 f4 f2 f2 f2 f2 04 f4 f4 f4 f2 f2 f2 f2 00 00 error 09-Oct-2019 19:28:33 0x10003a843650: f4 f4 f2 f2 f2 f2 00 00 00 00 f2 f2 f2 f2 00 00 error 09-Oct-2019 19:28:33 Shadow byte legend (one shadow byte represents 8 application bytes): error 09-Oct-2019 19:28:33 Addressable: 00 error 09-Oct-2019 19:28:33 Partially addressable: 01 02 03 04 05 06 07 error 09-Oct-2019 19:28:33 Heap left redzone: fa error 09-Oct-2019 19:28:33 Heap right redzone: fb error 09-Oct-2019 19:28:33 Freed heap region: fd error 09-Oct-2019 19:28:33 Stack left redzone: f1 error 09-Oct-2019 19:28:33 Stack mid redzone: f2 error 09-Oct-2019 19:28:33 Stack right redzone: f3 error 09-Oct-2019 19:28:33 Stack partial redzone: f4 error 09-Oct-2019 19:28:33 Stack after return: f5 error 09-Oct-2019 19:28:33 Stack use after scope: f8 error 09-Oct-2019 19:28:33 Global redzone: f9 error 09-Oct-2019 19:28:33 Global init order: f6 error 09-Oct-2019 19:28:33 Poisoned by user: f7 error 09-Oct-2019 19:28:33 Container overflow: fc error 09-Oct-2019 19:28:33 Array cookie: ac error 09-Oct-2019 19:28:33 Intra object redzone: bb error 09-Oct-2019 19:28:33 ASan internal: fe error 09-Oct-2019 19:28:36 r3: Daemon bgpd not running This is the result of this code pattern in rfapi/rfapi_import.c: prefix_cmp((struct prefix *)&bpi_result->extra->vnc.import.rd, (struct prefix *)prd)) Effectively prd or vnc.import.rd are `struct prefix_rd` which are being typecast to a `struct prefix`. Not a big deal except commit 1315d74 modified the prefix_cmp function to allow for a sorted prefix_cmp. In prefix_cmp we were looking at the offset and shift. In the case of vnc we were passing a prefix length of 64 which is the exact length of the remaining data structure for struct prefix_rd. So we calculated a offset of 8 and a shift of 0. The data structures for the prefix portion happened to be equal to 64 bits of data. So we checked that with the memcmp got a 0 and promptly read off the end of the data structure for the numcmp. The fix is if shift is 0 that means thei the memcmp has checked everything and there is nothing to do. Please note: We will still crash if we set the prefixlen > then ~312 bits currently( ie if the prefixlen specifies a bit length longer than the prefix length ). I do not think there is anything to do here( nor am I sure how to correct this either ) as that we are going to have some severe problems when we muck up the prefixlen. Fixes: FRRouting#5025 Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>

This code is called from the zebra main pthread during shutdown but the thread event is scheduled via the zebra dplane pthread. Hence, we should be using the `thread_cancel_async()` API to cancel the thread event on a different pthread. This is only ever hit in the rare case that we still have work left to do on the update queue during shutdown. Found via zebra crash: ``` (gdb) bt \#0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50 \#1 0x00007f4e4d3f7535 in __GI_abort () at abort.c:79 \#2 0x00007f4e4d3f740f in __assert_fail_base (fmt=0x7f4e4d559ee0 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=0x7f4e4d9071d0 "master->owner == pthread_self()", file=0x7f4e4d906cf8 "lib/thread.c", line=1185, function=<optimized out>) at assert.c:92 \#3 0x00007f4e4d405102 in __GI___assert_fail (assertion=assertion@entry=0x7f4e4d9071d0 "master->owner == pthread_self()", file=file@entry=0x7f4e4d906cf8 "lib/thread.c", line=line@entry=1185, function=function@entry=0x7f4e4d906b68 <__PRETTY_FUNCTION__.15817> "thread_cancel") at assert.c:101 \#4 0x00007f4e4d8d095a in thread_cancel (thread=0x55b40d01a640) at lib/thread.c:1185 \FRRouting#5 0x000055b40c291845 in zebra_dplane_shutdown () at zebra/zebra_dplane.c:3274 \FRRouting#6 0x000055b40c27ee13 in zebra_finalize (dummy=<optimized out>) at zebra/main.c:202 \FRRouting#7 0x00007f4e4d8d1416 in thread_call (thread=thread@entry=0x7ffcbbc08870) at lib/thread.c:1599 \FRRouting#8 0x00007f4e4d8a1ef8 in frr_run (master=0x55b40ce35510) at lib/libfrr.c:1024 \FRRouting#9 0x000055b40c270916 in main (argc=8, argv=0x7ffcbbc08c78) at zebra/main.c:483 (gdb) down \#4 0x00007f4e4d8d095a in thread_cancel (thread=0x55b40d01a640) at lib/thread.c:1185 1185 assert(master->owner == pthread_self()); (gdb) ``` Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>

Address Sanitizer is reporting this issue: ==26177==ERROR: AddressSanitizer: heap-use-after-free on address 0x6120000238d8 at pc 0x7f88f7c4fa93 bp 0x7fff9a641830 sp 0x7fff9a641820 READ of size 8 at 0x6120000238d8 thread T0 #0 0x7f88f7c4fa92 in if_delete lib/if.c:290 #1 0x42192e in ospf_vl_if_delete ospfd/ospf_interface.c:912 #2 0x42192e in ospf_vl_delete ospfd/ospf_interface.c:990 #3 0x4a6208 in no_ospf_area_vlink ospfd/ospf_vty.c:1227 #4 0x7f88f7c1553d in cmd_execute_command_real lib/command.c:1073 FRRouting#5 0x7f88f7c19b1e in cmd_execute_command lib/command.c:1132 FRRouting#6 0x7f88f7c19e8e in cmd_execute lib/command.c:1288 FRRouting#7 0x7f88f7cd7523 in vty_command lib/vty.c:516 FRRouting#8 0x7f88f7cd79ff in vty_execute lib/vty.c:1285 FRRouting#9 0x7f88f7cde4f9 in vtysh_read lib/vty.c:2119 FRRouting#10 0x7f88f7ccb845 in thread_call lib/thread.c:1549 FRRouting#11 0x7f88f7c5d6a7 in frr_run lib/libfrr.c:1093 FRRouting#12 0x412976 in main ospfd/ospf_main.c:221 FRRouting#13 0x7f88f73b082f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f) FRRouting#14 0x413c78 in _start (/usr/local/master/sbin/ospfd+0x413c78) Effectively we are in a shutdown phase and as part of shutdown we delete the ospf interface pointer ( ifp->info ). The interface deletion code was modified in the past year to pass in the address of operator to allow us to NULL out the holding pointer. The catch here is that we free the oi and then delete the interface passing in the address of the oi->ifp pointer, causing a use after free. Fixes: FRRouting#5555 Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>

Running with --enable-address-sanitizer I am seeing this: ================================================================= ==19520==ERROR: AddressSanitizer: heap-use-after-free on address 0x6020003ef850 at pc 0x7fe9b8f7b57b bp 0x7fffbac6f9c0 sp 0x7fffbac6f170 READ of size 6 at 0x6020003ef850 thread T0 #0 0x7fe9b8f7b57a (/lib/x86_64-linux-gnu/libasan.so.5+0xb857a) #1 0x55e33d1071e5 in bgp_process_mac_rescan_table bgpd/bgp_mac.c:159 #2 0x55e33d107c09 in bgp_mac_rescan_evpn_table bgpd/bgp_mac.c:252 #3 0x55e33d107e39 in bgp_mac_rescan_all_evpn_tables bgpd/bgp_mac.c:266 #4 0x55e33d108270 in bgp_mac_remove_ifp_internal bgpd/bgp_mac.c:291 FRRouting#5 0x55e33d108893 in bgp_mac_del_mac_entry bgpd/bgp_mac.c:351 FRRouting#6 0x55e33d21412d in bgp_ifp_down bgpd/bgp_zebra.c:257 FRRouting#7 0x7fe9b8cbf3be in if_down_via_zapi lib/if.c:198 FRRouting#8 0x7fe9b8db303a in zclient_interface_down lib/zclient.c:1549 FRRouting#9 0x7fe9b8db8a06 in zclient_read lib/zclient.c:2693 FRRouting#10 0x7fe9b8d7b95a in thread_call lib/thread.c:1599 FRRouting#11 0x7fe9b8cd824e in frr_run lib/libfrr.c:1024 FRRouting#12 0x55e33d09d463 in main bgpd/bgp_main.c:477 FRRouting#13 0x7fe9b879409a in __libc_start_main ../csu/libc-start.c:308 FRRouting#14 0x55e33d09c189 in _start (/usr/lib/frr/bgpd+0x168189) 0x6020003ef850 is located 0 bytes inside of 16-byte region [0x6020003ef850,0x6020003ef860) freed by thread T0 here: #0 0x7fe9b8fabfb0 in __interceptor_free (/lib/x86_64-linux-gnu/libasan.so.5+0xe8fb0) #1 0x7fe9b8ce4ea9 in qfree lib/memory.c:129 #2 0x55e33d10825c in bgp_mac_remove_ifp_internal bgpd/bgp_mac.c:289 #3 0x55e33d108893 in bgp_mac_del_mac_entry bgpd/bgp_mac.c:351 #4 0x55e33d21412d in bgp_ifp_down bgpd/bgp_zebra.c:257 FRRouting#5 0x7fe9b8cbf3be in if_down_via_zapi lib/if.c:198 FRRouting#6 0x7fe9b8db303a in zclient_interface_down lib/zclient.c:1549 FRRouting#7 0x7fe9b8db8a06 in zclient_read lib/zclient.c:2693 FRRouting#8 0x7fe9b8d7b95a in thread_call lib/thread.c:1599 FRRouting#9 0x7fe9b8cd824e in frr_run lib/libfrr.c:1024 FRRouting#10 0x55e33d09d463 in main bgpd/bgp_main.c:477 FRRouting#11 0x7fe9b879409a in __libc_start_main ../csu/libc-start.c:308 previously allocated by thread T0 here: #0 0x7fe9b8fac518 in calloc (/lib/x86_64-linux-gnu/libasan.so.5+0xe9518) #1 0x7fe9b8ce4d93 in qcalloc lib/memory.c:110 #2 0x55e33d106b29 in bgp_mac_hash_alloc bgpd/bgp_mac.c:96 #3 0x7fe9b8cb8350 in hash_get lib/hash.c:149 #4 0x55e33d10845b in bgp_mac_add_mac_entry bgpd/bgp_mac.c:303 FRRouting#5 0x55e33d226757 in bgp_ifp_create bgpd/bgp_zebra.c:2644 FRRouting#6 0x7fe9b8cbf1e6 in if_new_via_zapi lib/if.c:176 FRRouting#7 0x7fe9b8db2d3b in zclient_interface_add lib/zclient.c:1481 FRRouting#8 0x7fe9b8db87f8 in zclient_read lib/zclient.c:2659 FRRouting#9 0x7fe9b8d7b95a in thread_call lib/thread.c:1599 FRRouting#10 0x7fe9b8cd824e in frr_run lib/libfrr.c:1024 FRRouting#11 0x55e33d09d463 in main bgpd/bgp_main.c:477 FRRouting#12 0x7fe9b879409a in __libc_start_main ../csu/libc-start.c:308 Effectively we are passing to bgp_mac_remove_ifp_internal the macaddr that is associated with the bsm data structure. There exists a path where the bsm is freed and then we immediately pass the macaddr into bgp_mac_rescan_all_evpn_tables. So just make a copy of the macaddr data structure before we free the bsm Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>

We were not connecting the default zebra_ns to the default ns->info at namespace initialization in zebra. Thus, when we tried to use the `ns_walk_func()` it would ignore the default zebra_ns since there is no pointer to it from the ns struct. Fix this by connecting them in `zebra_ns_init()` and, if the default ns is not found, exit with failure since this is not recoverable. This was found during a crash where we fail to cancel the kernel_read thread at termination (via the `ns_walk_func()`) and then we get a netlink notification trying to use the zns struct that has already been freed. ``` (gdb) bt \#0 0x00007fc1134dc7bb in raise () from /lib/x86_64-linux-gnu/libc.so.6 \#1 0x00007fc1134c7535 in abort () from /lib/x86_64-linux-gnu/libc.so.6 \#2 0x00007fc113996f8f in core_handler (signo=11, siginfo=0x7ffe5429d070, context=<optimized out>) at lib/sigevent.c:254 \#3 <signal handler called> \#4 0x0000561880e15449 in if_lookup_by_index_per_ns (ns=0x0, ifindex=174) at zebra/interface.c:269 \FRRouting#5 0x0000561880e1642c in if_up (ifp=ifp@entry=0x561883076c50) at zebra/interface.c:1043 \FRRouting#6 0x0000561880e10723 in netlink_link_change (h=0x7ffe5429d8f0, ns_id=<optimized out>, startup=<optimized out>) at zebra/if_netlink.c:1384 \FRRouting#7 0x0000561880e17e68 in netlink_parse_info (filter=filter@entry=0x561880e17680 <netlink_information_fetch>, nl=nl@entry=0x561882497238, zns=zns@entry=0x7ffe542a5940, count=count@entry=5, startup=startup@entry=0) at zebra/kernel_netlink.c:932 \FRRouting#8 0x0000561880e186a5 in kernel_read (thread=<optimized out>) at zebra/kernel_netlink.c:406 \FRRouting#9 0x00007fc1139a4416 in thread_call (thread=thread@entry=0x7ffe542a5b70) at lib/thread.c:1599 \FRRouting#10 0x00007fc113974ef8 in frr_run (master=0x5618823c9510) at lib/libfrr.c:1024 \FRRouting#11 0x0000561880e0b916 in main (argc=8, argv=0x7ffe542a5f78) at zebra/main.c:483 ``` Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>

================================================================= ==13611==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7ffe9e5c8694 at pc 0x0000004d18ac bp 0x7ffe9e5c8330 sp 0x7ffe9e5c7ae0 WRITE of size 17 at 0x7ffe9e5c8694 thread T0 #0 0x4d18ab in __asan_memcpy (/usr/lib/frr/zebra+0x4d18ab) #1 0x7f16f04bd97f in stream_get2 /home/qlyoung/frr/lib/stream.c:277:2 #2 0x6410ec in zebra_vxlan_remote_macip_del /home/qlyoung/frr/zebra/zebra_vxlan.c:7718:4 #3 0x68fa98 in zserv_handle_commands /home/qlyoung/frr/zebra/zapi_msg.c:2611:3 #4 0x556add in main /home/qlyoung/frr/zebra/main.c:309:2 FRRouting#5 0x7f16eea3bb96 in __libc_start_main /build/glibc-OTsEL5/glibc-2.27/csu/../csu/libc-start.c:310 FRRouting#6 0x431249 in _start (/usr/lib/frr/zebra+0x431249) This decode is the result of a buffer overflow because we are not checking ipa_len. Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>

================================================================= ==3058==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000010 (pc 0x7f5bf3ef7477 bp 0x7ffdfaa20d40 sp 0x7ffdfaa204c8 T0) ==3058==The signal is caused by a READ memory access. ==3058==Hint: address points to the zero page. #0 0x7f5bf3ef7476 in memcpy /build/glibc-OTsEL5/glibc-2.27/string/../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:134 #1 0x4d158a in __asan_memcpy (/usr/lib/frr/zebra+0x4d158a) #2 0x7f5bf58da8ad in stream_put /home/qlyoung/frr/lib/stream.c:605:3 #3 0x67d428 in zsend_ipset_entry_notify_owner /home/qlyoung/frr/zebra/zapi_msg.c:851:2 #4 0x5c70b3 in zebra_pbr_add_ipset_entry /home/qlyoung/frr/zebra/zebra_pbr.c FRRouting#5 0x68e1bb in zread_ipset_entry /home/qlyoung/frr/zebra/zapi_msg.c:2465:4 FRRouting#6 0x68f958 in zserv_handle_commands /home/qlyoung/frr/zebra/zapi_msg.c:2611:3 FRRouting#7 0x55666d in main /home/qlyoung/frr/zebra/main.c:309:2 FRRouting#8 0x7f5bf3e5db96 in __libc_start_main /build/glibc-OTsEL5/glibc-2.27/csu/../csu/libc-start.c:310 FRRouting#9 0x4311d9 in _start (/usr/lib/frr/zebra+0x4311d9) the ipset->backpointer was NULL as that the hash lookup failed to find anything. Prevent this crash from happening. Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>

==25402==ERROR: LeakSanitizer: detected memory leaks Direct leak of 16 byte(s) in 1 object(s) allocated from: #0 0x533302 in calloc (/usr/lib/frr/zebra+0x533302) #1 0x7fee84cdc80b in qcalloc /home/qlyoung/frr/lib/memory.c:110:27 #2 0x5a3032 in create_label_chunk /home/qlyoung/frr/zebra/label_manager.c:188:3 #3 0x5a3c2b in assign_label_chunk /home/qlyoung/frr/zebra/label_manager.c:354:8 #4 0x5a2a38 in label_manager_get_chunk /home/qlyoung/frr/zebra/label_manager.c:424:9 FRRouting#5 0x5a1412 in hook_call_lm_get_chunk /home/qlyoung/frr/zebra/label_manager.c:60:1 FRRouting#6 0x5a1412 in lm_get_chunk_call /home/qlyoung/frr/zebra/label_manager.c:81:2 FRRouting#7 0x72a234 in zread_get_label_chunk /home/qlyoung/frr/zebra/zapi_msg.c:2026:2 FRRouting#8 0x72a234 in zread_label_manager_request /home/qlyoung/frr/zebra/zapi_msg.c:2073:4 FRRouting#9 0x73150c in zserv_handle_commands /home/qlyoung/frr/zebra/zapi_msg.c:2688:2 When creating label chunk that has a specified base, we eventually are calling assign_specific_label_chunk. This function finds the appropriate list node and deletes it from the lbl_mgr.lc_list but since the function uses list_delete_node() the deletion function that is specified for lbl_mgr.lc_list is not called thus dropping the memory. Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com> Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>

The only two safi's that are usable for zebra for installation of routes into the rib are SAFI_UNICAST and SAFI_MULTICAST. The acceptance of other safi's is causing a memory leak: Direct leak of 56 byte(s) in 1 object(s) allocated from: #0 0x5332f2 in calloc (/usr/lib/frr/zebra+0x5332f2) #1 0x7f594adc29db in qcalloc /opt/build/frr/lib/memory.c:110:27 #2 0x686849 in zebra_vrf_get_table_with_table_id /opt/build/frr/zebra/zebra_vrf.c:390:11 #3 0x65a245 in rib_add_multipath /opt/build/frr/zebra/zebra_rib.c:2591:10 #4 0x7211bc in zread_route_add /opt/build/frr/zebra/zapi_msg.c:1616:8 FRRouting#5 0x73063c in zserv_handle_commands /opt/build/frr/zebra/zapi_msg.c:2682:2 Collapse Sequence of events: Upon vrf creation there is a zvrf->table[afi][safi] data structure that tables are auto created for. These tables only create SAFI_UNICAST and SAFI_MULTICAST tables. Since these are the only safi types that are zebra can actually work on. zvrf data structures also have a zvrf->otable data structure that tracks in a RB tree other tables that are created ( say you have routes stuck in any random table in the 32bit route table space in linux ). This data structure is only used if the lookup in zvrf->table[afi][safi] fails. After creation if we pass a route down from an upper level protocol that has non unicast or multicast safi *but* has the actual tableid of the vrf we are in, the initial lookup will always return NULL leaving us to look in the otable. This will create a data structure to track this data. If after this event you pass in a second route with the same afi/safi/table_id, the otable will be created and attempted to be stored, but the RB_TREE_UNIQ data structure when it sees this will return the original otable returned and the lookup function zebra_vrf_get_table_with_table_id will just drop the second otable. Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com> Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>

Upper level clients ask for default routes of a particular family This change ensures that they only receive the family that they have asked for. Discovered when testing in ospf `default-information originate` ================================================================= ==246306==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7fffffffa2e8 at pc 0x7ffff73c44e2 bp 0x7fffffffa090 sp 0x7fffffffa088 READ of size 16 at 0x7fffffffa2e8 thread T0 #0 0x7ffff73c44e1 in prefix_copy lib/prefix.c:310 #1 0x7ffff741c0aa in route_node_lookup lib/table.c:255 #2 0x5555556cd263 in ospf_external_info_delete ospfd/ospf_asbr.c:178 #3 0x5555556a47cc in ospf_zebra_read_route ospfd/ospf_zebra.c:852 #4 0x7ffff746f5d8 in zclient_read lib/zclient.c:3028 FRRouting#5 0x7ffff742fc91 in thread_call lib/thread.c:1549 FRRouting#6 0x7ffff7374642 in frr_run lib/libfrr.c:1093 FRRouting#7 0x5555555bfaef in main ospfd/ospf_main.c:235 FRRouting#8 0x7ffff70a2bba in __libc_start_main ../csu/libc-start.c:308 FRRouting#9 0x5555555bf499 in _start (/usr/lib/frr/ospfd+0x6b499) Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>

Implement tests to verify BGP link-bandwidth and weighted ECMP functionality. These tests validate one of the primary use cases for weighted ECMP (a.k.a. Unequal cost multipath) using BGP link-bandwidth: https://tools.ietf.org/html/draft-mohanty-bess-ebgp-dmz The included tests are: Test #1: Test BGP link-bandwidth advertisement based on number of multipaths Test #2: Test cumulative link-bandwidth propagation Test #3: Test weighted ECMP - multipath with next hop weights Test #4: Test weighted ECMP rebalancing upon change (link flap) Test FRRouting#5: Test weighted ECMP for a second anycast IP Test FRRouting#6: Test paths with and without link-bandwidth - receiver should resort to regular ECMP Test FRRouting#7: Test different options for processing link-bandwidth on the receiver Signed-off-by: Vivek Venkatraman <vivek@cumulusnetworks.com>

This problem was reported by the sanitizer - ================================================================= ==24764==ERROR: AddressSanitizer: heap-use-after-free on address 0x60d0000115c8 at pc 0x55cb9cfad312 bp 0x7fffa0552140 sp 0x7fffa0552138 READ of size 8 at 0x60d0000115c8 thread T0 #0 0x55cb9cfad311 in zebra_evpn_remote_es_flush zebra/zebra_evpn_mh.c:2041 #1 0x55cb9cfad311 in zebra_evpn_es_cleanup zebra/zebra_evpn_mh.c:2234 #2 0x55cb9cf6ae78 in zebra_vrf_disable zebra/zebra_vrf.c:205 #3 0x7fc8d478f114 in vrf_delete lib/vrf.c:229 #4 0x7fc8d478f99a in vrf_terminate lib/vrf.c:541 FRRouting#5 0x55cb9ceba0af in sigint zebra/main.c:176 FRRouting#6 0x55cb9ceba0af in sigint zebra/main.c:130 FRRouting#7 0x7fc8d4765d20 in quagga_sigevent_process lib/sigevent.c:103 FRRouting#8 0x7fc8d4787e8c in thread_fetch lib/thread.c:1396 FRRouting#9 0x7fc8d4708782 in frr_run lib/libfrr.c:1092 FRRouting#10 0x55cb9ce931d8 in main zebra/main.c:488 FRRouting#11 0x7fc8d43ee09a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2409a) FRRouting#12 0x55cb9ce94c09 in _start (/usr/lib/frr/zebra+0x8ac09) ================================================================= Signed-off-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com>

When zebra is running with debugs turned on there is a use after free reported by the address sanitizer: 2020/10/16 12:58:02 ZEBRA: rib_delnode: (0:254):4.5.6.16/32: rn 0x60b000026f20, re 0x6080000131a0, removing 2020/10/16 12:58:02 ZEBRA: rib_meta_queue_add: (0:254):4.5.6.16/32: queued rn 0x60b000026f20 into sub-queue 3 ================================================================= ==3101430==ERROR: AddressSanitizer: heap-use-after-free on address 0x608000011d28 at pc 0x555555705ab6 bp 0x7fffffffdab0 sp 0x7fffffffdaa8 READ of size 8 at 0x608000011d28 thread T0 #0 0x555555705ab5 in re_list_const_first zebra/rib.h:222 #1 0x555555705b54 in re_list_first zebra/rib.h:222 #2 0x555555711a4f in process_subq_route zebra/zebra_rib.c:2248 #3 0x555555711d2e in process_subq zebra/zebra_rib.c:2286 #4 0x555555711ec7 in meta_queue_process zebra/zebra_rib.c:2320 FRRouting#5 0x7ffff74701f7 in work_queue_run lib/workqueue.c:291 FRRouting#6 0x7ffff7450e9c in thread_call lib/thread.c:1581 FRRouting#7 0x7ffff738eaf7 in frr_run lib/libfrr.c:1099 FRRouting#8 0x55555561a578 in main zebra/main.c:455 FRRouting#9 0x7ffff7079cc9 in __libc_start_main ../csu/libc-start.c:308 FRRouting#10 0x5555555e3429 in _start (/usr/lib/frr/zebra+0x8f429) 0x608000011d28 is located 8 bytes inside of 88-byte region [0x608000011d20,0x608000011d78) freed by thread T0 here: #0 0x7ffff768bb6f in __interceptor_free (/lib/x86_64-linux-gnu/libasan.so.6+0xa9b6f) #1 0x7ffff739ccad in qfree lib/memory.c:129 #2 0x555555709ee4 in rib_gc_dest zebra/zebra_rib.c:746 #3 0x55555570ca76 in rib_process zebra/zebra_rib.c:1240 #4 0x555555711a05 in process_subq_route zebra/zebra_rib.c:2245 FRRouting#5 0x555555711d2e in process_subq zebra/zebra_rib.c:2286 FRRouting#6 0x555555711ec7 in meta_queue_process zebra/zebra_rib.c:2320 FRRouting#7 0x7ffff74701f7 in work_queue_run lib/workqueue.c:291 FRRouting#8 0x7ffff7450e9c in thread_call lib/thread.c:1581 FRRouting#9 0x7ffff738eaf7 in frr_run lib/libfrr.c:1099 FRRouting#10 0x55555561a578 in main zebra/main.c:455 FRRouting#11 0x7ffff7079cc9 in __libc_start_main ../csu/libc-start.c:308 previously allocated by thread T0 here: #0 0x7ffff768c037 in calloc (/lib/x86_64-linux-gnu/libasan.so.6+0xaa037) #1 0x7ffff739cb98 in qcalloc lib/memory.c:110 #2 0x555555712ace in zebra_rib_create_dest zebra/zebra_rib.c:2515 #3 0x555555712c6c in rib_link zebra/zebra_rib.c:2576 #4 0x555555712faa in rib_addnode zebra/zebra_rib.c:2607 FRRouting#5 0x555555715bf0 in rib_add_multipath_nhe zebra/zebra_rib.c:3012 FRRouting#6 0x555555715f56 in rib_add_multipath zebra/zebra_rib.c:3049 FRRouting#7 0x55555571788b in rib_add zebra/zebra_rib.c:3327 FRRouting#8 0x5555555e584a in connected_up zebra/connected.c:254 FRRouting#9 0x5555555e42ff in connected_announce zebra/connected.c:94 FRRouting#10 0x5555555e4fd3 in connected_update zebra/connected.c:195 FRRouting#11 0x5555555e61ad in connected_add_ipv4 zebra/connected.c:340 FRRouting#12 0x5555555f26f5 in netlink_interface_addr zebra/if_netlink.c:1213 FRRouting#13 0x55555560f756 in netlink_information_fetch zebra/kernel_netlink.c:350 FRRouting#14 0x555555612e49 in netlink_parse_info zebra/kernel_netlink.c:941 FRRouting#15 0x55555560f9f1 in kernel_read zebra/kernel_netlink.c:402 FRRouting#16 0x7ffff7450e9c in thread_call lib/thread.c:1581 FRRouting#17 0x7ffff738eaf7 in frr_run lib/libfrr.c:1099 FRRouting#18 0x55555561a578 in main zebra/main.c:455 FRRouting#19 0x7ffff7079cc9 in __libc_start_main ../csu/libc-start.c:308 SUMMARY: AddressSanitizer: heap-use-after-free zebra/rib.h:222 in re_list_const_first This is happening because we are using the dest pointer after a call into rib_gc_dest. In process_subq_route, we call rib_process() and if the dest is deleted dest pointer is now garbage. We must reload the dest pointer in this case. Signed-off-by: Donald Sharp <sharpd@nvidia.com>

The fields in the broadcast/p2p union struct in an isis circuit are initialized when the circuit goes up, but currently this step is skipped if the interface is passive. This can create problems if the circuit type (referred to as network type in the config) changes from broadcast to point-to-point. We can end up with the p2p neighbor pointer pointing at some garbage left by the broadcast struct in the union, which would then cause a segfault the first time we would dereference it - for example when building the lsp, or computing the SPF tree. compressed backtrace of a possible crash: #0 0x0000555555579a9c in lsp_build at frr/isisd/isis_lsp.c:1114 #1 0x000055555557a516 in lsp_regenerate at frr/isisd/isis_lsp.c:1301 #2 0x000055555557aa25 in lsp_refresh at frr/isisd/isis_lsp.c:1381 #3 0x00007ffff7b2622c in thread_call at frr/lib/thread.c:1549 #4 0x00007ffff7ad6df4 in frr_run at frr/lib/libfrr.c:1098 FRRouting#5 0x000055555556b67f in main at frr/isisd/isis_main.c:272 isis_lsp.c: 1112 case CIRCUIT_T_P2P: { 1113 struct isis_adjacency *nei = circuit->u.p2p.neighbor; 1114 if (nei && nei->adj_state == ISIS_ADJ_UP Signed-off-by: Emanuele Di Pascale <emanuele@voltanet.io>

We are using data after it has been freed and handed back to the OS. Address Sanitizer output: error 23-Nov-2020 18:53:57 ERROR: AddressSanitizer: heap-use-after-free on address 0x631000024838 at pc 0x55f825998f58 bp 0x7fffa5b0f5b0 sp 0x7fffa5b0f5a0 error 23-Nov-2020 18:53:57 READ of size 4 at 0x631000024838 thread T0 error 23-Nov-2020 18:53:57 #0 0x55f825998f57 in lde_imsg_compose_parent_sync ldpd/lde.c:226 error 23-Nov-2020 18:53:57 #1 0x55f8259ca9ed in vlog ldpd/log.c:48 error 23-Nov-2020 18:53:57 #2 0x55f8259cb1c8 in log_info ldpd/log.c:102 error 23-Nov-2020 18:53:57 #3 0x55f82599e841 in lde_shutdown ldpd/lde.c:208 error 23-Nov-2020 18:53:57 #4 0x55f8259a2703 in lde_dispatch_parent ldpd/lde.c:666 error 23-Nov-2020 18:53:57 FRRouting#5 0x55f825ac3815 in thread_call lib/thread.c:1681 error 23-Nov-2020 18:53:57 FRRouting#6 0x55f825998d5e in lde ldpd/lde.c:160 error 23-Nov-2020 18:53:57 FRRouting#7 0x55f82598a289 in main ldpd/ldpd.c:320 error 23-Nov-2020 18:53:57 FRRouting#8 0x7fe3f749db96 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b96) error 23-Nov-2020 18:53:57 FRRouting#9 0x55f825982579 in _start (/usr/lib/frr/ldpd+0xb3579) error 23-Nov-2020 18:53:57 error 23-Nov-2020 18:53:57 0x631000024838 is located 65592 bytes inside of 65632-byte region [0x631000014800,0x631000024860) error 23-Nov-2020 18:53:57 freed by thread T0 here: error 23-Nov-2020 18:53:57 #0 0x7fe3f8a4d7a8 in __interceptor_free (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xde7a8) error 23-Nov-2020 18:53:57 #1 0x55f82599e830 in lde_shutdown ldpd/lde.c:206 error 23-Nov-2020 18:53:57 #2 0x55f8259a2703 in lde_dispatch_parent ldpd/lde.c:666 error 23-Nov-2020 18:53:57 #3 0x55f825ac3815 in thread_call lib/thread.c:1681 error 23-Nov-2020 18:53:57 #4 0x55f825998d5e in lde ldpd/lde.c:160 error 23-Nov-2020 18:53:57 FRRouting#5 0x55f82598a289 in main ldpd/ldpd.c:320 error 23-Nov-2020 18:53:57 FRRouting#6 0x7fe3f749db96 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b96) error 23-Nov-2020 18:53:57 error 23-Nov-2020 18:53:57 previously allocated by thread T0 here: error 23-Nov-2020 18:53:57 #0 0x7fe3f8a4dd28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28) error 23-Nov-2020 18:53:57 #1 0x55f825998cb7 in lde ldpd/lde.c:151 error 23-Nov-2020 18:53:57 #2 0x55f82598a289 in main ldpd/ldpd.c:320 error 23-Nov-2020 18:53:57 #3 0x7fe3f749db96 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b96) error 23-Nov-2020 18:53:57 The fix is to put this in global space. Signed-off-by: Donald Sharp <sharpd@nvidia.com>

error 26-Nov-2020 14:35:02 ERROR: AddressSanitizer: heap-use-after-free on address 0x631000024838 at pc 0x55cefae977e9 bp 0x7ffdd3546860 sp 0x7ffdd3546850 error 26-Nov-2020 14:35:02 READ of size 4 at 0x631000024838 thread T0 error 26-Nov-2020 14:35:02 #0 0x55cefae977e8 in ldpe_imsg_compose_parent_sync ldpd/ldpe.c:256 error 26-Nov-2020 14:35:02 #1 0x55cefae9ab13 in vlog ldpd/log.c:53 error 26-Nov-2020 14:35:02 #2 0x55cefae9b21f in log_info ldpd/log.c:102 error 26-Nov-2020 14:35:02 #3 0x55cefae96eae in ldpe_shutdown ldpd/ldpe.c:237 error 26-Nov-2020 14:35:02 #4 0x55cefae99254 in ldpe_dispatch_main ldpd/ldpe.c:585 error 26-Nov-2020 14:35:02 FRRouting#5 0x55cefaf93875 in thread_call lib/thread.c:1681 error 26-Nov-2020 14:35:02 FRRouting#6 0x55cefae97304 in ldpe ldpd/ldpe.c:136 error 26-Nov-2020 14:35:02 FRRouting#7 0x55cefae5a2e2 in main ldpd/ldpd.c:322 error 26-Nov-2020 14:35:02 FRRouting#8 0x7f4ef0c33b96 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b96) error 26-Nov-2020 14:35:02 FRRouting#9 0x55cefae525e9 in _start (/usr/lib/frr/ldpd+0xb35e9) error 26-Nov-2020 14:35:02 error 26-Nov-2020 14:35:02 0x631000024838 is located 65592 bytes inside of 65632-byte region [0x631000014800,0x631000024860) error 26-Nov-2020 14:35:02 freed by thread T0 here: error 26-Nov-2020 14:35:02 #0 0x7f4ef21e37a8 in __interceptor_free (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xde7a8) error 26-Nov-2020 14:35:02 #1 0x55cefae96e91 in ldpe_shutdown ldpd/ldpe.c:234 error 26-Nov-2020 14:35:02 #2 0x55cefae99254 in ldpe_dispatch_main ldpd/ldpe.c:585 error 26-Nov-2020 14:35:02 #3 0x55cefaf93875 in thread_call lib/thread.c:1681 error 26-Nov-2020 14:35:02 #4 0x55cefae97304 in ldpe ldpd/ldpe.c:136 error 26-Nov-2020 14:35:02 FRRouting#5 0x55cefae5a2e2 in main ldpd/ldpd.c:322 error 26-Nov-2020 14:35:02 FRRouting#6 0x7f4ef0c33b96 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b96) error 26-Nov-2020 14:35:02 error 26-Nov-2020 14:35:02 previously allocated by thread T0 here: error 26-Nov-2020 14:35:02 #0 0x7f4ef21e3d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28) error 26-Nov-2020 14:35:02 #1 0x55cefae9725d in ldpe ldpd/ldpe.c:127 error 26-Nov-2020 14:35:02 #2 0x55cefae5a2e2 in main ldpd/ldpd.c:322 error 26-Nov-2020 14:35:02 #3 0x7f4ef0c33b96 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b96) Clean this problem up in the same way as the previous commit Signed-off-by: Donald Sharp <sharpd@nvidia.com>

When running zebra w/ valgrind, it was noticed that there was a bunch of passing uninitialized data to the kernel: ==38194== Syscall param ioctl(generic) points to uninitialised byte(s) ==38194== at 0x4CDF88A: ioctl (in /lib/libc.so.7) ==38194== by 0x49A4031: vrf_ioctl (vrf.c:860) ==38194== by 0x2AFE29: vrf_if_ioctl (ioctl.c:91) ==38194== by 0x2AFF39: if_get_mtu (ioctl.c:161) ==38194== by 0x2B12C3: ifm_read (kernel_socket.c:653) ==38194== by 0x2A7F76: interface_list (if_sysctl.c:129) ==38194== by 0x2E9958: zebra_ns_enable (zebra_ns.c:127) ==38194== by 0x2E9958: zebra_ns_init (zebra_ns.c:214) ==38194== by 0x2B3F82: main (main.c:401) ==38194== Address 0x7fc000967 is on thread 1's stack ==38194== in frame #3, created by if_get_mtu (ioctl.c:155) ==38194== ==38194== Syscall param ioctl(generic) points to uninitialised byte(s) ==38194== at 0x4CDF88A: ioctl (in /lib/libc.so.7) ==38194== by 0x49A4031: vrf_ioctl (vrf.c:860) ==38194== by 0x2AFE29: vrf_if_ioctl (ioctl.c:91) ==38194== by 0x2AFED9: if_get_metric (ioctl.c:143) ==38194== by 0x2B12CB: ifm_read (kernel_socket.c:655) ==38194== by 0x2A7F76: interface_list (if_sysctl.c:129) ==38194== by 0x2E9958: zebra_ns_enable (zebra_ns.c:127) ==38194== by 0x2E9958: zebra_ns_init (zebra_ns.c:214) ==38194== by 0x2B3F82: main (main.c:401) ==38194== Address 0x7fc000967 is on thread 1's stack ==38194== in frame #3, created by if_get_metric (ioctl.c:137) ==38194== ==38194== Syscall param ioctl(generic) points to uninitialised byte(s) ==38194== at 0x4CDF88A: ioctl (in /lib/libc.so.7) ==38194== by 0x49A4031: vrf_ioctl (vrf.c:860) ==38194== by 0x2AFE29: vrf_if_ioctl (ioctl.c:91) ==38194== by 0x2B052D: if_get_flags (ioctl.c:419) ==38194== by 0x2B1CF1: ifam_read (kernel_socket.c:930) ==38194== by 0x2A7F57: interface_list (if_sysctl.c:132) ==38194== by 0x2E9958: zebra_ns_enable (zebra_ns.c:127) ==38194== by 0x2E9958: zebra_ns_init (zebra_ns.c:214) ==38194== by 0x2B3F82: main (main.c:401) ==38194== Address 0x7fc000707 is on thread 1's stack ==38194== in frame #3, created by if_get_flags (ioctl.c:411) Valgrind is no longer reporting these issues. Signed-off-by: Donald Sharp <sharpd@nvidia.com>

When `terminal monitor` is issued I am seeing this for valgrind on freebsd: 2022/03/24 18:07:45 ZEBRA: [RHJDG-5FNSK][EC 100663304] can't open configuration file [/usr/local/etc/frr/zebra.conf] ==52993== Syscall param sendmsg(sendmsg.msg_control) points to uninitialised byte(s) ==52993== at 0x4CE268A: _sendmsg (in /lib/libc.so.7) ==52993== by 0x4B96245: ??? (in /lib/libthr.so.3) ==52993== by 0x4CDF329: sendmsg (in /lib/libc.so.7) ==52993== by 0x49A9994: vtysh_do_pass_fd (vty.c:2041) ==52993== by 0x49A9994: vtysh_flush (vty.c:2070) ==52993== by 0x499F4CE: thread_call (thread.c:2002) ==52993== by 0x495D317: frr_run (libfrr.c:1196) ==52993== by 0x2B4068: main (main.c:471) ==52993== Address 0x7fc000864 is on thread 1's stack ==52993== in frame #3, created by vtysh_flush (vty.c:2065) Fix by initializing the memory to `0` Signed-off-by: Donald Sharp <sharpd@nvidia.com>

Fixing the crash: > #0 0x0000560aa80f8e30 in lspdb_const_find (h=<error reading variable: Cannot access memory at address 0x7fff5e95efe8>, item=<error reading variable: Cannot access memory at address 0x7fff5e95efe0>) at ./isisd/isis_lsp.h:64 > #1 0x0000560aa80f8e9d in lspdb_find (h=0x560aaa1ed3b8, item=0x7fff5e95f050) at ./isisd/isis_lsp.h:64 > #2 0x0000560aa80f92f9 in lsp_search (head=0x560aaa1ed3b8, id=0x7fff5e95f200 "") at isisd/isis_lsp.c:100 > #3 0x0000560aa8113d69 in spf_adj_list_parse_tlv (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, id=0x560aad331a78 "", desig_is_id=0x0, pseudo_metric=0, metric=3, oldmetric=false, subtlvs=0x0) at isisd/isis_spf.c:1330 > #4 0x0000560aa811419d in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1f4e50, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1429 > FRRouting#5 0x0000560aa81141fe in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1ff8e0, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1442 > FRRouting#6 0x0000560aa81141fe in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1f4e50, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1442 > (...) > #65507 0x0000560aa81141fe in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1ff8e0, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1442 > #65508 0x0000560aa81141fe in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1f4e50, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1442 > #65509 0x0000560aa81141fe in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1ff8e0, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1442 > #65510 0x0000560aa81141fe in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1f4e50, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1442 > #65511 0x0000560aa8114313 in isis_spf_build_adj_list (spftree=0x560aaa1f09d0, lsp=0x560aaa1f4e50) at isisd/isis_spf.c:1455 > #65512 0x0000560aa8114f09 in isis_run_spf (spftree=0x560aaa1f09d0) at isisd/isis_spf.c:1775 > #65513 0x0000560aa8115057 in isis_run_spf_with_protection (area=0x560aaa1ed3b0, spftree=0x560aaa1f09d0) at isisd/isis_spf.c:1801 > #65514 0x0000560aa8115311 in isis_run_spf_cb (thread=0x7fff5f15e5a0) at isisd/isis_spf.c:1859 > #65515 0x00007f90bac66dcc in thread_call (thread=0x7fff5f15e5a0) at lib/thread.c:2002 > #65516 0x00007f90bac013ee in frr_run (master=0x560aa9f5cb40) at lib/libfrr.c:1196 > #65517 0x0000560aa80e7da2 in main (argc=2, argv=0x7fff5f15e7b8, envp=0x7fff5f15e7d0) at isisd/isis_main.c:273 Fixes: 7b36d36 ("isisd: make the SPF code more modular") Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>

When running zebra w/ valgrind, it was noticed that there was a bunch of passing uninitialized data to the kernel: ==38194== Syscall param ioctl(generic) points to uninitialised byte(s) ==38194== at 0x4CDF88A: ioctl (in /lib/libc.so.7) ==38194== by 0x49A4031: vrf_ioctl (vrf.c:860) ==38194== by 0x2AFE29: vrf_if_ioctl (ioctl.c:91) ==38194== by 0x2AFF39: if_get_mtu (ioctl.c:161) ==38194== by 0x2B12C3: ifm_read (kernel_socket.c:653) ==38194== by 0x2A7F76: interface_list (if_sysctl.c:129) ==38194== by 0x2E9958: zebra_ns_enable (zebra_ns.c:127) ==38194== by 0x2E9958: zebra_ns_init (zebra_ns.c:214) ==38194== by 0x2B3F82: main (main.c:401) ==38194== Address 0x7fc000967 is on thread 1's stack ==38194== in frame #3, created by if_get_mtu (ioctl.c:155) ==38194== ==38194== Syscall param ioctl(generic) points to uninitialised byte(s) ==38194== at 0x4CDF88A: ioctl (in /lib/libc.so.7) ==38194== by 0x49A4031: vrf_ioctl (vrf.c:860) ==38194== by 0x2AFE29: vrf_if_ioctl (ioctl.c:91) ==38194== by 0x2AFED9: if_get_metric (ioctl.c:143) ==38194== by 0x2B12CB: ifm_read (kernel_socket.c:655) ==38194== by 0x2A7F76: interface_list (if_sysctl.c:129) ==38194== by 0x2E9958: zebra_ns_enable (zebra_ns.c:127) ==38194== by 0x2E9958: zebra_ns_init (zebra_ns.c:214) ==38194== by 0x2B3F82: main (main.c:401) ==38194== Address 0x7fc000967 is on thread 1's stack ==38194== in frame #3, created by if_get_metric (ioctl.c:137) ==38194== ==38194== Syscall param ioctl(generic) points to uninitialised byte(s) ==38194== at 0x4CDF88A: ioctl (in /lib/libc.so.7) ==38194== by 0x49A4031: vrf_ioctl (vrf.c:860) ==38194== by 0x2AFE29: vrf_if_ioctl (ioctl.c:91) ==38194== by 0x2B052D: if_get_flags (ioctl.c:419) ==38194== by 0x2B1CF1: ifam_read (kernel_socket.c:930) ==38194== by 0x2A7F57: interface_list (if_sysctl.c:132) ==38194== by 0x2E9958: zebra_ns_enable (zebra_ns.c:127) ==38194== by 0x2E9958: zebra_ns_init (zebra_ns.c:214) ==38194== by 0x2B3F82: main (main.c:401) ==38194== Address 0x7fc000707 is on thread 1's stack ==38194== in frame #3, created by if_get_flags (ioctl.c:411) Valgrind is no longer reporting these issues. Signed-off-by: Donald Sharp <sharpd@nvidia.com>

When `terminal monitor` is issued I am seeing this for valgrind on freebsd: 2022/03/24 18:07:45 ZEBRA: [RHJDG-5FNSK][EC 100663304] can't open configuration file [/usr/local/etc/frr/zebra.conf] ==52993== Syscall param sendmsg(sendmsg.msg_control) points to uninitialised byte(s) ==52993== at 0x4CE268A: _sendmsg (in /lib/libc.so.7) ==52993== by 0x4B96245: ??? (in /lib/libthr.so.3) ==52993== by 0x4CDF329: sendmsg (in /lib/libc.so.7) ==52993== by 0x49A9994: vtysh_do_pass_fd (vty.c:2041) ==52993== by 0x49A9994: vtysh_flush (vty.c:2070) ==52993== by 0x499F4CE: thread_call (thread.c:2002) ==52993== by 0x495D317: frr_run (libfrr.c:1196) ==52993== by 0x2B4068: main (main.c:471) ==52993== Address 0x7fc000864 is on thread 1's stack ==52993== in frame #3, created by vtysh_flush (vty.c:2065) Fix by initializing the memory to `0` Signed-off-by: Donald Sharp <sharpd@nvidia.com>

Fixing the crash: > #0 0x0000560aa80f8e30 in lspdb_const_find (h=<error reading variable: Cannot access memory at address 0x7fff5e95efe8>, item=<error reading variable: Cannot access memory at address 0x7fff5e95efe0>) at ./isisd/isis_lsp.h:64 > #1 0x0000560aa80f8e9d in lspdb_find (h=0x560aaa1ed3b8, item=0x7fff5e95f050) at ./isisd/isis_lsp.h:64 > #2 0x0000560aa80f92f9 in lsp_search (head=0x560aaa1ed3b8, id=0x7fff5e95f200 "") at isisd/isis_lsp.c:100 > #3 0x0000560aa8113d69 in spf_adj_list_parse_tlv (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, id=0x560aad331a78 "", desig_is_id=0x0, pseudo_metric=0, metric=3, oldmetric=false, subtlvs=0x0) at isisd/isis_spf.c:1330 > #4 0x0000560aa811419d in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1f4e50, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1429 > FRRouting#5 0x0000560aa81141fe in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1ff8e0, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1442 > FRRouting#6 0x0000560aa81141fe in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1f4e50, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1442 > (...) > #65507 0x0000560aa81141fe in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1ff8e0, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1442 > #65508 0x0000560aa81141fe in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1f4e50, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1442 > #65509 0x0000560aa81141fe in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1ff8e0, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1442 > #65510 0x0000560aa81141fe in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1f4e50, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1442 > #65511 0x0000560aa8114313 in isis_spf_build_adj_list (spftree=0x560aaa1f09d0, lsp=0x560aaa1f4e50) at isisd/isis_spf.c:1455 > #65512 0x0000560aa8114f09 in isis_run_spf (spftree=0x560aaa1f09d0) at isisd/isis_spf.c:1775 > #65513 0x0000560aa8115057 in isis_run_spf_with_protection (area=0x560aaa1ed3b0, spftree=0x560aaa1f09d0) at isisd/isis_spf.c:1801 > #65514 0x0000560aa8115311 in isis_run_spf_cb (thread=0x7fff5f15e5a0) at isisd/isis_spf.c:1859 > #65515 0x00007f90bac66dcc in thread_call (thread=0x7fff5f15e5a0) at lib/thread.c:2002 > #65516 0x00007f90bac013ee in frr_run (master=0x560aa9f5cb40) at lib/libfrr.c:1196 > #65517 0x0000560aa80e7da2 in main (argc=2, argv=0x7fff5f15e7b8, envp=0x7fff5f15e7d0) at isisd/isis_main.c:273 Fixes: 7b36d36 ("isisd: make the SPF code more modular") Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>

patrasar · 2022-05-21T16:34:44Z

Already fixed as part of other PR.

Fixing the crash: > #0 0x0000560aa80f8e30 in lspdb_const_find (h=<error reading variable: Cannot access memory at address 0x7fff5e95efe8>, item=<error reading variable: Cannot access memory at address 0x7fff5e95efe0>) at ./isisd/isis_lsp.h:64 > #1 0x0000560aa80f8e9d in lspdb_find (h=0x560aaa1ed3b8, item=0x7fff5e95f050) at ./isisd/isis_lsp.h:64 > #2 0x0000560aa80f92f9 in lsp_search (head=0x560aaa1ed3b8, id=0x7fff5e95f200 "") at isisd/isis_lsp.c:100 > #3 0x0000560aa8113d69 in spf_adj_list_parse_tlv (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, id=0x560aad331a78 "", desig_is_id=0x0, pseudo_metric=0, metric=3, oldmetric=false, subtlvs=0x0) at isisd/isis_spf.c:1330 > #4 0x0000560aa811419d in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1f4e50, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1429 > FRRouting#5 0x0000560aa81141fe in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1ff8e0, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1442 > FRRouting#6 0x0000560aa81141fe in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1f4e50, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1442 > (...) > #65507 0x0000560aa81141fe in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1ff8e0, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1442 > #65508 0x0000560aa81141fe in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1f4e50, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1442 > #65509 0x0000560aa81141fe in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1ff8e0, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1442 > #65510 0x0000560aa81141fe in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1f4e50, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1442 > #65511 0x0000560aa8114313 in isis_spf_build_adj_list (spftree=0x560aaa1f09d0, lsp=0x560aaa1f4e50) at isisd/isis_spf.c:1455 > #65512 0x0000560aa8114f09 in isis_run_spf (spftree=0x560aaa1f09d0) at isisd/isis_spf.c:1775 > #65513 0x0000560aa8115057 in isis_run_spf_with_protection (area=0x560aaa1ed3b0, spftree=0x560aaa1f09d0) at isisd/isis_spf.c:1801 > #65514 0x0000560aa8115311 in isis_run_spf_cb (thread=0x7fff5f15e5a0) at isisd/isis_spf.c:1859 > #65515 0x00007f90bac66dcc in thread_call (thread=0x7fff5f15e5a0) at lib/thread.c:2002 > #65516 0x00007f90bac013ee in frr_run (master=0x560aa9f5cb40) at lib/libfrr.c:1196 > #65517 0x0000560aa80e7da2 in main (argc=2, argv=0x7fff5f15e7b8, envp=0x7fff5f15e7d0) at isisd/isis_main.c:273 The fix is similar to the crash fix included in d9884a7 ("isisd: Prepare IS-IS for Link State support"). The fix was: > diff --git a/isisd/isis_lsp.c b/isisd/isis_lsp.c > index 94353a5bc8..92d329f035 100644 > --- a/isisd/isis_lsp.c > +++ b/isisd/isis_lsp.c > @@ -2166,7 +2178,7 @@ int isis_lsp_iterate_ip_reach(struct isis_lsp *lsp, int family, uint16_t mtid, > if (lsp->hdr.seqno == 0 || lsp->hdr.rem_lifetime == 0) > return LSP_ITER_CONTINUE; > > - /* Parse main LSP. */ > + /* Parse LSP */ > if (lsp->tlvs) { > if (!fabricd && !pseudo_lsp && family == AF_INET > && mtid == ISIS_MT_IPV4_UNICAST) { > @@ -2236,13 +2248,17 @@ int isis_lsp_iterate_ip_reach(struct isis_lsp *lsp, int family, uint16_t mtid, > } > } > > - /* Parse LSP fragments. */ > - for (ALL_LIST_ELEMENTS_RO(lsp->lspu.frags, node, frag)) { > - if (!frag->tlvs) > - continue; > + /* Parse LSP fragments if it is not a fragment itself */ > + if (!LSP_FRAGMENT(lsp->hdr.lsp_id)) > + for (ALL_LIST_ELEMENTS_RO(lsp->lspu.frags, node, frag)) { > + if (!frag->tlvs) > + continue; > > - isis_lsp_iterate_ip_reach(frag, family, mtid, cb, arg); > - } > + if (isis_lsp_iterate_ip_reach(frag, family, mtid, cb, > + arg) > + == LSP_ITER_STOP) > + return LSP_ITER_STOP; > + } > > return LSP_ITER_CONTINUE; > } Fixes: 7b36d36 ("isisd: make the SPF code more modular") Fixes: 5e56a50 ("isisd: fix infinite loop when parsing LSPs") Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>

This commit ensures proper cleanup by deleting the gm_join_list when a PIM interface is deleted. The gm_join_list was previously not being freed, causing a memory leak. The ASan leak log for reference: ``` *********************************************************************************** Address Sanitizer Error detected in multicast_mld_join_topo1.test_multicast_mld_local_join/r1.asan.pim6d.28070 ================================================================= ==28070==ERROR: LeakSanitizer: detected memory leaks Direct leak of 40 byte(s) in 1 object(s) allocated from: #0 0x7f3605dbfd28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28) #1 0x56230373dd6b in qcalloc lib/memory.c:105 #2 0x56230372180f in list_new lib/linklist.c:49 #3 0x56230361b589 in pim_if_gm_join_add pimd/pim_iface.c:1313 #4 0x562303642247 in lib_interface_gmp_address_family_static_group_create pimd/pim_nb_config.c:2868 FRRouting#5 0x562303767280 in nb_callback_create lib/northbound.c:1235 FRRouting#6 0x562303767280 in nb_callback_configuration lib/northbound.c:1579 FRRouting#7 0x562303768a1d in nb_transaction_process lib/northbound.c:1710 FRRouting#8 0x56230376904a in nb_candidate_commit_apply lib/northbound.c:1104 FRRouting#9 0x5623037692ba in nb_candidate_commit lib/northbound.c:1137 FRRouting#10 0x562303769dec in nb_cli_classic_commit lib/northbound_cli.c:49 FRRouting#11 0x56230376fb79 in nb_cli_pending_commit_check lib/northbound_cli.c:88 FRRouting#12 0x5623036c5bcb in cmd_execute_command_real lib/command.c:991 FRRouting#13 0x5623036c5f1b in cmd_execute_command lib/command.c:1053 FRRouting#14 0x5623036c6392 in cmd_execute lib/command.c:1221 FRRouting#15 0x5623037e75da in vty_command lib/vty.c:591 FRRouting#16 0x5623037e7a74 in vty_execute lib/vty.c:1354 FRRouting#17 0x5623037f0253 in vtysh_read lib/vty.c:2362 FRRouting#18 0x5623037db4e8 in event_call lib/event.c:1995 FRRouting#19 0x562303720f97 in frr_run lib/libfrr.c:1213 FRRouting#20 0x56230368615d in main pimd/pim6_main.c:184 FRRouting#21 0x7f360461bc86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) Indirect leak of 192 byte(s) in 4 object(s) allocated from: #0 0x7f3605dbfd28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28) #1 0x56230373dd6b in qcalloc lib/memory.c:105 #2 0x56230361b91d in gm_join_new pimd/pim_iface.c:1288 #3 0x56230361b91d in pim_if_gm_join_add pimd/pim_iface.c:1326 #4 0x562303642247 in lib_interface_gmp_address_family_static_group_create pimd/pim_nb_config.c:2868 FRRouting#5 0x562303767280 in nb_callback_create lib/northbound.c:1235 FRRouting#6 0x562303767280 in nb_callback_configuration lib/northbound.c:1579 FRRouting#7 0x562303768a1d in nb_transaction_process lib/northbound.c:1710 FRRouting#8 0x56230376904a in nb_candidate_commit_apply lib/northbound.c:1104 FRRouting#9 0x5623037692ba in nb_candidate_commit lib/northbound.c:1137 FRRouting#10 0x562303769dec in nb_cli_classic_commit lib/northbound_cli.c:49 FRRouting#11 0x56230376fb79 in nb_cli_pending_commit_check lib/northbound_cli.c:88 FRRouting#12 0x5623036c5bcb in cmd_execute_command_real lib/command.c:991 FRRouting#13 0x5623036c5f1b in cmd_execute_command lib/command.c:1053 FRRouting#14 0x5623036c6392 in cmd_execute lib/command.c:1221 FRRouting#15 0x5623037e75da in vty_command lib/vty.c:591 FRRouting#16 0x5623037e7a74 in vty_execute lib/vty.c:1354 FRRouting#17 0x5623037f0253 in vtysh_read lib/vty.c:2362 FRRouting#18 0x5623037db4e8 in event_call lib/event.c:1995 FRRouting#19 0x562303720f97 in frr_run lib/libfrr.c:1213 FRRouting#20 0x56230368615d in main pimd/pim6_main.c:184 FRRouting#21 0x7f360461bc86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) Indirect leak of 96 byte(s) in 4 object(s) allocated from: #0 0x7f3605dbfd28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28) #1 0x56230373dd6b in qcalloc lib/memory.c:105 #2 0x562303721651 in listnode_new lib/linklist.c:71 #3 0x56230372182b in listnode_add lib/linklist.c:92 #4 0x56230361ba9a in gm_join_new pimd/pim_iface.c:1295 FRRouting#5 0x56230361ba9a in pim_if_gm_join_add pimd/pim_iface.c:1326 FRRouting#6 0x562303642247 in lib_interface_gmp_address_family_static_group_create pimd/pim_nb_config.c:2868 FRRouting#7 0x562303767280 in nb_callback_create lib/northbound.c:1235 FRRouting#8 0x562303767280 in nb_callback_configuration lib/northbound.c:1579 FRRouting#9 0x562303768a1d in nb_transaction_process lib/northbound.c:1710 FRRouting#10 0x56230376904a in nb_candidate_commit_apply lib/northbound.c:1104 FRRouting#11 0x5623037692ba in nb_candidate_commit lib/northbound.c:1137 FRRouting#12 0x562303769dec in nb_cli_classic_commit lib/northbound_cli.c:49 FRRouting#13 0x56230376fb79 in nb_cli_pending_commit_check lib/northbound_cli.c:88 FRRouting#14 0x5623036c5bcb in cmd_execute_command_real lib/command.c:991 FRRouting#15 0x5623036c5f1b in cmd_execute_command lib/command.c:1053 FRRouting#16 0x5623036c6392 in cmd_execute lib/command.c:1221 FRRouting#17 0x5623037e75da in vty_command lib/vty.c:591 FRRouting#18 0x5623037e7a74 in vty_execute lib/vty.c:1354 FRRouting#19 0x5623037f0253 in vtysh_read lib/vty.c:2362 FRRouting#20 0x5623037db4e8 in event_call lib/event.c:1995 FRRouting#21 0x562303720f97 in frr_run lib/libfrr.c:1213 FRRouting#22 0x56230368615d in main pimd/pim6_main.c:184 FRRouting#23 0x7f360461bc86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) Indirect leak of 48 byte(s) in 1 object(s) allocated from: #0 0x7f3605dbfd28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28) #1 0x56230373dd6b in qcalloc lib/memory.c:105 #2 0x56230361b91d in gm_join_new pimd/pim_iface.c:1288 #3 0x56230361b91d in pim_if_gm_join_add pimd/pim_iface.c:1326 #4 0x562303642247 in lib_interface_gmp_address_family_static_group_create pimd/pim_nb_config.c:2868 FRRouting#5 0x562303767280 in nb_callback_create lib/northbound.c:1235 FRRouting#6 0x562303767280 in nb_callback_configuration lib/northbound.c:1579 FRRouting#7 0x562303768a1d in nb_transaction_process lib/northbound.c:1710 FRRouting#8 0x56230376904a in nb_candidate_commit_apply lib/northbound.c:1104 FRRouting#9 0x5623037692ba in nb_candidate_commit lib/northbound.c:1137 FRRouting#10 0x562303769dec in nb_cli_classic_commit lib/northbound_cli.c:49 FRRouting#11 0x56230376fb79 in nb_cli_pending_commit_check lib/northbound_cli.c:88 FRRouting#12 0x5623036c5bcb in cmd_execute_command_real lib/command.c:991 FRRouting#13 0x5623036c5f6f in cmd_execute_command lib/command.c:1072 FRRouting#14 0x5623036c6392 in cmd_execute lib/command.c:1221 FRRouting#15 0x5623037e75da in vty_command lib/vty.c:591 FRRouting#16 0x5623037e7a74 in vty_execute lib/vty.c:1354 FRRouting#17 0x5623037f0253 in vtysh_read lib/vty.c:2362 FRRouting#18 0x5623037db4e8 in event_call lib/event.c:1995 FRRouting#19 0x562303720f97 in frr_run lib/libfrr.c:1213 FRRouting#20 0x56230368615d in main pimd/pim6_main.c:184 FRRouting#21 0x7f360461bc86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) Indirect leak of 24 byte(s) in 1 object(s) allocated from: #0 0x7f3605dbfd28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28) #1 0x56230373dd6b in qcalloc lib/memory.c:105 #2 0x562303721651 in listnode_new lib/linklist.c:71 #3 0x56230372182b in listnode_add lib/linklist.c:92 #4 0x56230361ba9a in gm_join_new pimd/pim_iface.c:1295 FRRouting#5 0x56230361ba9a in pim_if_gm_join_add pimd/pim_iface.c:1326 FRRouting#6 0x562303642247 in lib_interface_gmp_address_family_static_group_create pimd/pim_nb_config.c:2868 FRRouting#7 0x562303767280 in nb_callback_create lib/northbound.c:1235 FRRouting#8 0x562303767280 in nb_callback_configuration lib/northbound.c:1579 FRRouting#9 0x562303768a1d in nb_transaction_process lib/northbound.c:1710 FRRouting#10 0x56230376904a in nb_candidate_commit_apply lib/northbound.c:1104 FRRouting#11 0x5623037692ba in nb_candidate_commit lib/northbound.c:1137 FRRouting#12 0x562303769dec in nb_cli_classic_commit lib/northbound_cli.c:49 FRRouting#13 0x56230376fb79 in nb_cli_pending_commit_check lib/northbound_cli.c:88 FRRouting#14 0x5623036c5bcb in cmd_execute_command_real lib/command.c:991 FRRouting#15 0x5623036c5f6f in cmd_execute_command lib/command.c:1072 FRRouting#16 0x5623036c6392 in cmd_execute lib/command.c:1221 FRRouting#17 0x5623037e75da in vty_command lib/vty.c:591 FRRouting#18 0x5623037e7a74 in vty_execute lib/vty.c:1354 FRRouting#19 0x5623037f0253 in vtysh_read lib/vty.c:2362 FRRouting#20 0x5623037db4e8 in event_call lib/event.c:1995 FRRouting#21 0x562303720f97 in frr_run lib/libfrr.c:1213 FRRouting#22 0x56230368615d in main pimd/pim6_main.c:184 FRRouting#23 0x7f360461bc86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) SUMMARY: AddressSanitizer: 400 byte(s) leaked in 11 allocation(s). *********************************************************************************** ``` Signed-off-by: Keelan Cannoo <keelan.cannoo@icloud.com>

Memory leaks started flowing: ``` AddressSanitizer Topotests Part 0: 15 KB -> 283 KB AddressSanitizer Topotests Part 1: 1 KB -> 495 KB AddressSanitizer Topotests Part 2: 13 KB -> 478 KB AddressSanitizer Topotests Part 3: 39 KB -> 213 KB AddressSanitizer Topotests Part 4: 30 KB -> 836 KB AddressSanitizer Topotests Part 5: 0 bytes -> 356 KB AddressSanitizer Topotests Part 6: 86 KB -> 783 KB AddressSanitizer Topotests Part 7: 0 bytes -> 354 KB AddressSanitizer Topotests Part 8: 0 bytes -> 62 KB AddressSanitizer Topotests Part 9: 408 KB -> 518 KB ``` ``` Direct leak of 3584 byte(s) in 1 object(s) allocated from: #0 0x7f1957b02d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28) #1 0x559895c55df0 in qcalloc lib/memory.c:105 #2 0x559895bc1cdf in zserv_client_create zebra/zserv.c:743 #3 0x559895bc1cdf in zserv_accept zebra/zserv.c:880 #4 0x559895cf3438 in event_call lib/event.c:1995 FRRouting#5 0x559895c3901c in frr_run lib/libfrr.c:1213 FRRouting#6 0x559895a698f1 in main zebra/main.c:472 FRRouting#7 0x7f195635ec86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) ``` Fixes b20acd0 ("bgpd: Use synchronous way to get labels from Zebra") Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>

The loading_done event needs a event pointer to prevent use after free's. Testing found this: ERROR: AddressSanitizer: heap-use-after-free on address 0x613000035130 at pc 0x55ad42d54e5f bp 0x7ffff1e942a0 sp 0x7ffff1e94290 READ of size 1 at 0x613000035130 thread T0 #0 0x55ad42d54e5e in loading_done ospf6d/ospf6_neighbor.c:447 #1 0x55ad42ed7be4 in event_call lib/event.c:1995 #2 0x55ad42e1df75 in frr_run lib/libfrr.c:1213 #3 0x55ad42cf332e in main ospf6d/ospf6_main.c:250 #4 0x7f5798133c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) FRRouting#5 0x55ad42cf2b19 in _start (/usr/lib/frr/ospf6d+0x248b19) 0x613000035130 is located 48 bytes inside of 384-byte region [0x613000035100,0x613000035280) freed by thread T0 here: #0 0x7f57998d77a8 in __interceptor_free (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xde7a8) #1 0x55ad42e3b4b6 in qfree lib/memory.c:130 #2 0x55ad42d5d049 in ospf6_neighbor_delete ospf6d/ospf6_neighbor.c:180 #3 0x55ad42d1e1ea in interface_down ospf6d/ospf6_interface.c:930 #4 0x55ad42ed7be4 in event_call lib/event.c:1995 FRRouting#5 0x55ad42ed84fe in _event_execute lib/event.c:2086 FRRouting#6 0x55ad42d26d7b in ospf6_interface_clear ospf6d/ospf6_interface.c:2847 FRRouting#7 0x55ad42d73f16 in ospf6_process_reset ospf6d/ospf6_top.c:755 FRRouting#8 0x55ad42d7e98c in clear_router_ospf6_magic ospf6d/ospf6_top.c:778 FRRouting#9 0x55ad42d7e98c in clear_router_ospf6 ospf6d/ospf6_top_clippy.c:42 FRRouting#10 0x55ad42dc2665 in cmd_execute_command_real lib/command.c:994 FRRouting#11 0x55ad42dc2b32 in cmd_execute_command lib/command.c:1053 FRRouting#12 0x55ad42dc2fa9 in cmd_execute lib/command.c:1221 FRRouting#13 0x55ad42ee3cd6 in vty_command lib/vty.c:591 FRRouting#14 0x55ad42ee4170 in vty_execute lib/vty.c:1354 FRRouting#15 0x55ad42eec94f in vtysh_read lib/vty.c:2362 FRRouting#16 0x55ad42ed7be4 in event_call lib/event.c:1995 FRRouting#17 0x55ad42e1df75 in frr_run lib/libfrr.c:1213 FRRouting#18 0x55ad42cf332e in main ospf6d/ospf6_main.c:250 FRRouting#19 0x7f5798133c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) previously allocated by thread T0 here: #0 0x7f57998d7d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28) #1 0x55ad42e3ab22 in qcalloc lib/memory.c:105 #2 0x55ad42d5c8ff in ospf6_neighbor_create ospf6d/ospf6_neighbor.c:119 #3 0x55ad42d4c86a in ospf6_hello_recv ospf6d/ospf6_message.c:464 #4 0x55ad42d4c86a in ospf6_read_helper ospf6d/ospf6_message.c:1884 FRRouting#5 0x55ad42d4c86a in ospf6_receive ospf6d/ospf6_message.c:1925 FRRouting#6 0x55ad42ed7be4 in event_call lib/event.c:1995 FRRouting#7 0x55ad42e1df75 in frr_run lib/libfrr.c:1213 FRRouting#8 0x55ad42cf332e in main ospf6d/ospf6_main.c:250 FRRouting#9 0x7f5798133c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) Add an actual event pointer and just track it appropriately. Signed-off-by: Donald Sharp <sharpd@nvidia.com>

The function ospf6_router_lsa_contains_adj(), ospf6_gr_check_adjs() and ospf6_find_interf_prefix_lsa() iterate through LSDB and lock each LSA. During testing, it was discovered that the lock count did not reach zero upon termination. The stack trace below indicates the leak. To resolve this issue, it was found that unlocking the LSA before returning from the functions solves the problem. This suggests that there was a missing unlock that caused the lock count to remain nonzero. ================================================================= ==22565==ERROR: LeakSanitizer: detected memory leaks Direct leak of 400 byte(s) in 2 object(s) allocated from: #0 0x7fa744ccea37 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154 #1 0x7fa744867562 in qcalloc ../lib/memory.c:105 #2 0x555cdbb37506 in ospf6_lsa_alloc ../ospf6d/ospf6_lsa.c:710 #3 0x555cdbb375d6 in ospf6_lsa_create ../ospf6d/ospf6_lsa.c:725 #4 0x555cdbaf1008 in ospf6_receive_lsa ../ospf6d/ospf6_flood.c:912 FRRouting#5 0x555cdbb48ceb in ospf6_lsupdate_recv ../ospf6d/ospf6_message.c:1621 FRRouting#6 0x555cdbb4ac90 in ospf6_read_helper ../ospf6d/ospf6_message.c:1896 FRRouting#7 0x555cdbb4aecc in ospf6_receive ../ospf6d/ospf6_message.c:1925 FRRouting#8 0x7fa744950c33 in event_call ../lib/event.c:1995 FRRouting#9 0x7fa74483b34a in frr_run ../lib/libfrr.c:1213 FRRouting#10 0x555cdbacf1eb in main ../ospf6d/ospf6_main.c:250 FRRouting#11 0x7fa7443f9d8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58 Objects leaked above: 0x6110000606c0 (200 bytes) 0x611000060940 (200 bytes) Indirect leak of 80 byte(s) in 2 object(s) allocated from: #0 0x7fa744cce867 in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:145 #1 0x7fa744867525 in qmalloc ../lib/memory.c:100 #2 0x555cdbb37520 in ospf6_lsa_alloc ../ospf6d/ospf6_lsa.c:711 #3 0x555cdbb375d6 in ospf6_lsa_create ../ospf6d/ospf6_lsa.c:725 #4 0x555cdbaf1008 in ospf6_receive_lsa ../ospf6d/ospf6_flood.c:912 FRRouting#5 0x555cdbb48ceb in ospf6_lsupdate_recv ../ospf6d/ospf6_message.c:1621 FRRouting#6 0x555cdbb4ac90 in ospf6_read_helper ../ospf6d/ospf6_message.c:1896 FRRouting#7 0x555cdbb4aecc in ospf6_receive ../ospf6d/ospf6_message.c:1925 FRRouting#8 0x7fa744950c33 in event_call ../lib/event.c:1995 FRRouting#9 0x7fa74483b34a in frr_run ../lib/libfrr.c:1213 FRRouting#10 0x555cdbacf1eb in main ../ospf6d/ospf6_main.c:250 FRRouting#11 0x7fa7443f9d8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58 Objects leaked above: 0x6040000325d0 (40 bytes) 0x604000032650 (40 bytes) SUMMARY: AddressSanitizer: 480 byte(s) leaked in 4 allocation(s). ================================================================= ==5483==ERROR: LeakSanitizer: detected memory leaks Direct leak of 2000 byte(s) in 10 object(s) allocated from: #0 0x7f2c3faeea37 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154 #1 0x7f2c3f68a6d9 in qcalloc ../lib/memory.c:105 #2 0x56431b83633d in ospf6_lsa_alloc ../ospf6d/ospf6_lsa.c:710 #3 0x56431b83640d in ospf6_lsa_create ../ospf6d/ospf6_lsa.c:725 #4 0x56431b7efe13 in ospf6_receive_lsa ../ospf6d/ospf6_flood.c:912 FRRouting#5 0x56431b847b31 in ospf6_lsupdate_recv ../ospf6d/ospf6_message.c:1621 FRRouting#6 0x56431b849ad6 in ospf6_read_helper ../ospf6d/ospf6_message.c:1896 FRRouting#7 0x56431b849d12 in ospf6_receive ../ospf6d/ospf6_message.c:1925 FRRouting#8 0x7f2c3f773c62 in event_call ../lib/event.c:1995 FRRouting#9 0x7f2c3f65e2de in frr_run ../lib/libfrr.c:1213 FRRouting#10 0x56431b7cdff6 in main ../ospf6d/ospf6_main.c:221 FRRouting#11 0x7f2c3f21dd8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58 Objects leaked above: 0x611000060800 (200 bytes) 0x611000060a80 (200 bytes) 0x611000060d00 (200 bytes) 0x611000060f80 (200 bytes) 0x611000061200 (200 bytes) 0x611000061480 (200 bytes) 0x611000061840 (200 bytes) 0x611000061ac0 (200 bytes) 0x61100006c740 (200 bytes) 0x61100006d500 (200 bytes) Indirect leak of 460 byte(s) in 10 object(s) allocated from: #0 0x7f2c3faee867 in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:145 #1 0x7f2c3f68a69c in qmalloc ../lib/memory.c:100 #2 0x56431b836357 in ospf6_lsa_alloc ../ospf6d/ospf6_lsa.c:711 #3 0x56431b83640d in ospf6_lsa_create ../ospf6d/ospf6_lsa.c:725 #4 0x56431b7efe13 in ospf6_receive_lsa ../ospf6d/ospf6_flood.c:912 FRRouting#5 0x56431b847b31 in ospf6_lsupdate_recv ../ospf6d/ospf6_message.c:1621 FRRouting#6 0x56431b849ad6 in ospf6_read_helper ../ospf6d/ospf6_message.c:1896 FRRouting#7 0x56431b849d12 in ospf6_receive ../ospf6d/ospf6_message.c:1925 FRRouting#8 0x7f2c3f773c62 in event_call ../lib/event.c:1995 FRRouting#9 0x7f2c3f65e2de in frr_run ../lib/libfrr.c:1213 FRRouting#10 0x56431b7cdff6 in main ../ospf6d/ospf6_main.c:221 FRRouting#11 0x7f2c3f21dd8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58 Objects leaked above: 0x604000033110 (40 bytes) 0x604000033190 (40 bytes) 0x604000033210 (44 bytes) 0x604000033290 (44 bytes) 0x604000033310 (44 bytes) 0x604000033390 (44 bytes) 0x604000033410 (44 bytes) 0x604000033490 (44 bytes) 0x604000034c90 (44 bytes) 0x6070000d3830 (72 bytes) SUMMARY: AddressSanitizer: 2460 byte(s) leaked in 20 allocation(s). Signed-off-by: ryndia <dindyalsarvesh@gmail.com>

The bgp vpn policy had some attribute not free when the function bgp_free was called leading to memory leak as shown below. ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251:Direct leak of 592 byte(s) in 2 object(s) allocated from: ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- #0 0x7f4b7ae92037 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- #1 0x7f4b7aa96e38 in qcalloc lib/memory.c:105 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- #2 0x7f4b7aa9bec9 in srv6_locator_chunk_alloc lib/srv6.c:135 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- #3 0x56396f8e56f8 in ensure_vrf_tovpn_sid_per_af bgpd/bgp_mplsvpn.c:752 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- #4 0x56396f8e608a in ensure_vrf_tovpn_sid bgpd/bgp_mplsvpn.c:846 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- FRRouting#5 0x56396f8e075d in vpn_leak_postchange bgpd/bgp_mplsvpn.h:259 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- FRRouting#6 0x56396f8f3e5b in vpn_leak_postchange_all bgpd/bgp_mplsvpn.c:3397 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- FRRouting#7 0x56396fa920ef in bgp_zebra_process_srv6_locator_chunk bgpd/bgp_zebra.c:3238 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- FRRouting#8 0x7f4b7abb2913 in zclient_read lib/zclient.c:4134 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- FRRouting#9 0x7f4b7ab62010 in thread_call lib/thread.c:1991 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- FRRouting#10 0x7f4b7aa5a418 in frr_run lib/libfrr.c:1185 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- FRRouting#11 0x56396f7d756d in main bgpd/bgp_main.c:505 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- FRRouting#12 0x7f4b7a479d09 in __libc_start_main ../csu/libc-start.c:308 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251:Direct leak of 32 byte(s) in 2 object(s) allocated from: ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- #0 0x7f4b7ae92037 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- #1 0x7f4b7aa96e38 in qcalloc lib/memory.c:105 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- #2 0x56396f8e31b8 in vpn_leak_zebra_vrf_sid_update_per_af bgpd/bgp_mplsvpn.c:386 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- #3 0x56396f8e3ae8 in vpn_leak_zebra_vrf_sid_update bgpd/bgp_mplsvpn.c:448 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- #4 0x56396f8e09b0 in vpn_leak_postchange bgpd/bgp_mplsvpn.h:271 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- FRRouting#5 0x56396f8f3e5b in vpn_leak_postchange_all bgpd/bgp_mplsvpn.c:3397 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- FRRouting#6 0x56396fa920ef in bgp_zebra_process_srv6_locator_chunk bgpd/bgp_zebra.c:3238 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- FRRouting#7 0x7f4b7abb2913 in zclient_read lib/zclient.c:4134 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- FRRouting#8 0x7f4b7ab62010 in thread_call lib/thread.c:1991 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- FRRouting#9 0x7f4b7aa5a418 in frr_run lib/libfrr.c:1185 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- FRRouting#10 0x56396f7d756d in main bgpd/bgp_main.c:505 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- FRRouting#11 0x7f4b7a479d09 in __libc_start_main ../csu/libc-start.c:308 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251:Direct leak of 32 byte(s) in 2 object(s) allocated from: ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- #0 0x7f4b7ae92037 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- #1 0x7f4b7aa96e38 in qcalloc lib/memory.c:105 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- #2 0x56396f8e5730 in ensure_vrf_tovpn_sid_per_af bgpd/bgp_mplsvpn.c:753 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- #3 0x56396f8e608a in ensure_vrf_tovpn_sid bgpd/bgp_mplsvpn.c:846 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- #4 0x56396f8e075d in vpn_leak_postchange bgpd/bgp_mplsvpn.h:259 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- FRRouting#5 0x56396f8f3e5b in vpn_leak_postchange_all bgpd/bgp_mplsvpn.c:3397 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- FRRouting#6 0x56396fa920ef in bgp_zebra_process_srv6_locator_chunk bgpd/bgp_zebra.c:3238 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- FRRouting#7 0x7f4b7abb2913 in zclient_read lib/zclient.c:4134 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- FRRouting#8 0x7f4b7ab62010 in thread_call lib/thread.c:1991 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- FRRouting#9 0x7f4b7aa5a418 in frr_run lib/libfrr.c:1185 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- FRRouting#10 0x56396f7d756d in main bgpd/bgp_main.c:505 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- FRRouting#11 0x7f4b7a479d09 in __libc_start_main ../csu/libc-start.c:308 ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251- ./bgp_srv6l3vpn_to_bgp_vrf.test_bgp_srv6l3vpn_to_bgp_vrf/r2.bgpd.asan.603251-SUMMARY: AddressSanitizer: 656 byte(s) leaked in 6 allocation(s). Signed-off-by: ryndia <dindyalsarvesh@gmail.com>

The `bgp_vrf->vrf_prd_pretty` string was not properly freed, leading to a memory leak. This commit resolves the memory leak by freeing the memory allocated for `bgp_vrf->vrf_prd_pretty` before returning from the function. The ASan leak log for reference: ``` *********************************************************************************** Address Sanitizer Error detected in evpn_type5_test_topo1.test_evpn_type5_topo1/e1.asan.bgpd.17689 ================================================================= ==17689==ERROR: LeakSanitizer: detected memory leaks Direct leak of 15 byte(s) in 1 object(s) allocated from: #0 0x7fdd94fc0538 in strdup (/usr/lib/x86_64-linux-gnu/libasan.so.4+0x77538) #1 0x55e28d9c4c6c in qstrdup lib/memory.c:117 #2 0x55e28d6c0d27 in evpn_configure_vrf_rd bgpd/bgp_evpn_vty.c:2297 #3 0x55e28d6c0d27 in bgp_evpn_vrf_rd bgpd/bgp_evpn_vty.c:6271 #4 0x55e28d94c155 in cmd_execute_command_real lib/command.c:994 FRRouting#5 0x55e28d94c622 in cmd_execute_command lib/command.c:1053 FRRouting#6 0x55e28d94ca99 in cmd_execute lib/command.c:1221 FRRouting#7 0x55e28da6d7d4 in vty_command lib/vty.c:591 FRRouting#8 0x55e28da6dc6e in vty_execute lib/vty.c:1354 FRRouting#9 0x55e28da7644d in vtysh_read lib/vty.c:2362 FRRouting#10 0x55e28da616e2 in event_call lib/event.c:1995 FRRouting#11 0x55e28d9a7a65 in frr_run lib/libfrr.c:1213 FRRouting#12 0x55e28d63ef00 in main bgpd/bgp_main.c:505 FRRouting#13 0x7fdd93883c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) SUMMARY: AddressSanitizer: 15 byte(s) leaked in 1 allocation(s). *********************************************************************************** ``` Signed-off-by: Keelan Cannoo <keelan.cannoo@icloud.com>

`bmnc->nh` was not properly freed, leading to a memory leak. The commit adds a check to ensure that the `bmnc->nh` member variable is freed if it exists. The ASan leak log for reference: ``` *********************************************************************************** Address Sanitizer Error detected in bgp_vpnv4_asbr.test_bgp_vpnv4_asbr/r2.asan.bgpd.6382 ================================================================= ==6382==ERROR: LeakSanitizer: detected memory leaks Direct leak of 720 byte(s) in 5 object(s) allocated from: #0 0x7f6a80d02d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28) #1 0x55c9afd7c81c in qcalloc lib/memory.c:105 #2 0x55c9afd9166b in nexthop_new lib/nexthop.c:358 #3 0x55c9afd93aaa in nexthop_dup lib/nexthop.c:843 #4 0x55c9afad39bb in bgp_mplsvpn_nh_label_bind_register_local_label bgpd/bgp_mplsvpn.c:4259 FRRouting#5 0x55c9afb1c5e9 in bgp_mplsvpn_handle_label_allocation bgpd/bgp_route.c:3239 FRRouting#6 0x55c9afb1c5e9 in bgp_process_main_one bgpd/bgp_route.c:3339 FRRouting#7 0x55c9afb1d2c1 in bgp_process_wq bgpd/bgp_route.c:3591 FRRouting#8 0x55c9afe33df9 in work_queue_run lib/workqueue.c:266 FRRouting#9 0x55c9afe198e2 in event_call lib/event.c:1995 FRRouting#10 0x55c9afd5fc6f in frr_run lib/libfrr.c:1213 FRRouting#11 0x55c9af9f6f00 in main bgpd/bgp_main.c:505 FRRouting#12 0x7f6a7f55ec86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) Indirect leak of 16 byte(s) in 2 object(s) allocated from: #0 0x7f6a80d02d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28) #1 0x55c9afd7c81c in qcalloc lib/memory.c:105 #2 0x55c9afd91ce8 in nexthop_add_labels lib/nexthop.c:536 #3 0x55c9afd93754 in nexthop_copy_no_recurse lib/nexthop.c:802 #4 0x55c9afd939fb in nexthop_copy lib/nexthop.c:821 FRRouting#5 0x55c9afd93abb in nexthop_dup lib/nexthop.c:845 FRRouting#6 0x55c9afad39bb in bgp_mplsvpn_nh_label_bind_register_local_label bgpd/bgp_mplsvpn.c:4259 FRRouting#7 0x55c9afb1c5e9 in bgp_mplsvpn_handle_label_allocation bgpd/bgp_route.c:3239 FRRouting#8 0x55c9afb1c5e9 in bgp_process_main_one bgpd/bgp_route.c:3339 FRRouting#9 0x55c9afb1d2c1 in bgp_process_wq bgpd/bgp_route.c:3591 FRRouting#10 0x55c9afe33df9 in work_queue_run lib/workqueue.c:266 FRRouting#11 0x55c9afe198e2 in event_call lib/event.c:1995 FRRouting#12 0x55c9afd5fc6f in frr_run lib/libfrr.c:1213 FRRouting#13 0x55c9af9f6f00 in main bgpd/bgp_main.c:505 FRRouting#14 0x7f6a7f55ec86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) SUMMARY: AddressSanitizer: 736 byte(s) leaked in 7 allocation(s). *********************************************************************************** ``` Signed-off-by: Keelan Cannoo <keelan.cannoo@icloud.com>

When `dplane_fpm_nl` receives a route, it allocates memory for a dplane context and calls `netlink_route_change_read_unicast_internal` without initializing the `intf_extra_list` contained in the dplane context. If `netlink_route_change_read_unicast_internal` is not able to process the route, we call `dplane_ctx_fini` to free the dplane context. This causes a crash because `dplane_ctx_fini` attempts to access the intf_extra_list which is not initialized. To solve this issue, we can call `dplane_ctx_route_init`to initialize the dplane route context properly, just after the dplane context allocation. (gdb) bt #0 0x0000555dd5ceae80 in dplane_intf_extra_list_pop (h=0x7fae1c007e68) at ../zebra/zebra_dplane.c:427 #1 dplane_ctx_free_internal (ctx=0x7fae1c0074b0) at ../zebra/zebra_dplane.c:724 #2 0x0000555dd5cebc99 in dplane_ctx_free (pctx=0x7fae2aa88c98) at ../zebra/zebra_dplane.c:869 #3 dplane_ctx_free (pctx=0x7fae2aa88c98, pctx@entry=0x7fae2aa78c28) at ../zebra/zebra_dplane.c:855 #4 dplane_ctx_fini (pctx=pctx@entry=0x7fae2aa88c98) at ../zebra/zebra_dplane.c:890 FRRouting#5 0x00007fae31e93f29 in fpm_read (t=) at ../zebra/dplane_fpm_nl.c:605 FRRouting#6 0x00007fae325191dd in thread_call (thread=thread@entry=0x7fae2aa98da0) at ../lib/thread.c:2006 FRRouting#7 0x00007fae324c42b8 in fpt_run (arg=0x555dd74777c0) at ../lib/frr_pthread.c:309 FRRouting#8 0x00007fae32405ea7 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 FRRouting#9 0x00007fae32325a2f in clone () from /lib/x86_64-linux-gnu/libc.so.6 Fixes: FRRouting#13754 Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>

In the function ospf_lsa_translated_nssa_new the newly created lsa is lock however, the return lsa from ospf_lsa_new already has a lock. Therefore removing the addition lock resolve the leak below. ospf_basic_functionality.test_ospf_nssa#r3.asan.ospfd.5456 ================================================================= ==5456==ERROR: LeakSanitizer: detected memory leaks Direct leak of 640 byte(s) in 5 object(s) allocated from: #0 0x7f294f354a37 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154 #1 0x7f294eeed562 in qcalloc ../lib/memory.c:105 #2 0x561a16004f60 in ospf_lsa_new ../ospfd/ospf_lsa.c:186 #3 0x561a160051a1 in ospf_lsa_new_and_data ../ospfd/ospf_lsa.c:205 #4 0x561a1600f21d in ospf_exnl_lsa_prepare_and_flood ../ospfd/ospf_lsa.c:1762 FRRouting#5 0x561a1600fd71 in ospf_external_lsa_new ../ospfd/ospf_lsa.c:1863 FRRouting#6 0x561a160107d7 in ospf_lsa_translated_nssa_new ../ospfd/ospf_lsa.c:1985 FRRouting#7 0x561a16011cfb in ospf_translated_nssa_refresh ../ospfd/ospf_lsa.c:2152 FRRouting#8 0x561a16014bb2 in ospf_external_lsa_install ../ospfd/ospf_lsa.c:2871 FRRouting#9 0x561a1601596b in ospf_lsa_install ../ospfd/ospf_lsa.c:3076 FRRouting#10 0x561a16168b3c in ospf_flood ../ospfd/ospf_flood.c:482 FRRouting#11 0x561a160462f8 in ospf_ls_upd ../ospfd/ospf_packet.c:2115 FRRouting#12 0x561a1604c66c in ospf_read_helper ../ospfd/ospf_packet.c:3198 FRRouting#13 0x561a1604c88e in ospf_read ../ospfd/ospf_packet.c:3229 FRRouting#14 0x7f294efd6c33 in event_call ../lib/event.c:1995 FRRouting#15 0x7f294eec134a in frr_run ../lib/libfrr.c:1213 FRRouting#16 0x561a15fd3b6d in main ../ospfd/ospf_main.c:249 FRRouting#17 0x7f294e998d8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58 Objects leaked above: 0x60c000062800 (128 bytes) 0x60c000062c80 (128 bytes) 0x60c0000631c0 (128 bytes) 0x60c000063700 (128 bytes) 0x60c000063d00 (128 bytes) Direct leak of 640 byte(s) in 5 object(s) allocated from: #0 0x7f294f354a37 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154 #1 0x7f294eeed562 in qcalloc ../lib/memory.c:105 #2 0x561a16004f60 in ospf_lsa_new ../ospfd/ospf_lsa.c:186 #3 0x561a160051a1 in ospf_lsa_new_and_data ../ospfd/ospf_lsa.c:205 #4 0x561a1600f21d in ospf_exnl_lsa_prepare_and_flood ../ospfd/ospf_lsa.c:1762 FRRouting#5 0x561a1600fd71 in ospf_external_lsa_new ../ospfd/ospf_lsa.c:1863 FRRouting#6 0x561a160107d7 in ospf_lsa_translated_nssa_new ../ospfd/ospf_lsa.c:1985 FRRouting#7 0x561a16010e10 in ospf_translated_nssa_originate ../ospfd/ospf_lsa.c:2034 FRRouting#8 0x561a16136559 in ospf_abr_translate_nssa ../ospfd/ospf_abr.c:668 FRRouting#9 0x561a161383da in ospf_abr_process_nssa_translates ../ospfd/ospf_abr.c:968 FRRouting#10 0x561a1613f9b8 in ospf_abr_nssa_task ../ospfd/ospf_abr.c:2054 FRRouting#11 0x561a161402e5 in ospf_abr_task_timer ../ospfd/ospf_abr.c:2168 FRRouting#12 0x7f294efd6c33 in event_call ../lib/event.c:1995 FRRouting#13 0x7f294eec134a in frr_run ../lib/libfrr.c:1213 FRRouting#14 0x561a15fd3b6d in main ../ospfd/ospf_main.c:249 FRRouting#15 0x7f294e998d8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58 Objects leaked above: 0x60c00003e380 (128 bytes) 0x60c00003e740 (128 bytes) 0x60c00003eb00 (128 bytes) 0x60c00005fd40 (128 bytes) 0x60c00005ff80 (128 bytes) Indirect leak of 180 byte(s) in 5 object(s) allocated from: #0 0x7f294f354a37 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154 #1 0x7f294eeed562 in qcalloc ../lib/memory.c:105 #2 0x561a16005a43 in ospf_lsa_data_new ../ospfd/ospf_lsa.c:296 #3 0x561a160051b1 in ospf_lsa_new_and_data ../ospfd/ospf_lsa.c:206 #4 0x561a1600f21d in ospf_exnl_lsa_prepare_and_flood ../ospfd/ospf_lsa.c:1762 FRRouting#5 0x561a1600fd71 in ospf_external_lsa_new ../ospfd/ospf_lsa.c:1863 FRRouting#6 0x561a160107d7 in ospf_lsa_translated_nssa_new ../ospfd/ospf_lsa.c:1985 FRRouting#7 0x561a16011cfb in ospf_translated_nssa_refresh ../ospfd/ospf_lsa.c:2152 FRRouting#8 0x561a16014bb2 in ospf_external_lsa_install ../ospfd/ospf_lsa.c:2871 FRRouting#9 0x561a1601596b in ospf_lsa_install ../ospfd/ospf_lsa.c:3076 FRRouting#10 0x561a16168b3c in ospf_flood ../ospfd/ospf_flood.c:482 FRRouting#11 0x561a160462f8 in ospf_ls_upd ../ospfd/ospf_packet.c:2115 FRRouting#12 0x561a1604c66c in ospf_read_helper ../ospfd/ospf_packet.c:3198 FRRouting#13 0x561a1604c88e in ospf_read ../ospfd/ospf_packet.c:3229 FRRouting#14 0x7f294efd6c33 in event_call ../lib/event.c:1995 FRRouting#15 0x7f294eec134a in frr_run ../lib/libfrr.c:1213 FRRouting#16 0x561a15fd3b6d in main ../ospfd/ospf_main.c:249 FRRouting#17 0x7f294e998d8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58 Objects leaked above: 0x60400003f890 (36 bytes) 0x60400003f990 (36 bytes) 0x60400003fa50 (36 bytes) 0x60400003fb10 (36 bytes) 0x60400003fbd0 (36 bytes) Indirect leak of 180 byte(s) in 5 object(s) allocated from: #0 0x7f294f354a37 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154 #1 0x7f294eeed562 in qcalloc ../lib/memory.c:105 #2 0x561a16005a43 in ospf_lsa_data_new ../ospfd/ospf_lsa.c:296 #3 0x561a160051b1 in ospf_lsa_new_and_data ../ospfd/ospf_lsa.c:206 #4 0x561a1600f21d in ospf_exnl_lsa_prepare_and_flood ../ospfd/ospf_lsa.c:1762 FRRouting#5 0x561a1600fd71 in ospf_external_lsa_new ../ospfd/ospf_lsa.c:1863 FRRouting#6 0x561a160107d7 in ospf_lsa_translated_nssa_new ../ospfd/ospf_lsa.c:1985 FRRouting#7 0x561a16010e10 in ospf_translated_nssa_originate ../ospfd/ospf_lsa.c:2034 FRRouting#8 0x561a16136559 in ospf_abr_translate_nssa ../ospfd/ospf_abr.c:668 FRRouting#9 0x561a161383da in ospf_abr_process_nssa_translates ../ospfd/ospf_abr.c:968 FRRouting#10 0x561a1613f9b8 in ospf_abr_nssa_task ../ospfd/ospf_abr.c:2054 FRRouting#11 0x561a161402e5 in ospf_abr_task_timer ../ospfd/ospf_abr.c:2168 FRRouting#12 0x7f294efd6c33 in event_call ../lib/event.c:1995 FRRouting#13 0x7f294eec134a in frr_run ../lib/libfrr.c:1213 FRRouting#14 0x561a15fd3b6d in main ../ospfd/ospf_main.c:249 FRRouting#15 0x7f294e998d8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58 Objects leaked above: 0x60400003c6d0 (36 bytes) 0x60400003c790 (36 bytes) 0x60400003c810 (36 bytes) 0x60400003c890 (36 bytes) 0x60400003c910 (36 bytes) SUMMARY: AddressSanitizer: 1640 byte(s) leaked in 20 allocation(s). Signed-off-by: ryndia <dindyalsarvesh@gmail.com>

ERROR: AddressSanitizer: heap-use-after-free on address 0x6160000801f0 at pc 0x5598c27c213f bp 0x7ffc04462060 sp 0x7ffc04462050 READ of size 4 at 0x6160000801f0 thread T0 #0 0x5598c27c213e in igmp_source_delete pimd/pim_igmpv3.c:340 #1 0x5598c27c277f in igmp_source_delete_expired pimd/pim_igmpv3.c:405 #2 0x5598c27b34c7 in igmp_group_timer pimd/pim_igmp.c:1324 #3 0x7fb78e68e1a7 in event_call lib/event.c:1995 #4 0x7fb78e5d28a5 in frr_run lib/libfrr.c:1213 FRRouting#5 0x5598c27c781d in main pimd/pim_main.c:162 FRRouting#6 0x7fb78dbeac86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) FRRouting#7 0x5598c26f0ab9 in _start (/usr/lib/frr/pimd+0x103ab9) 0x6160000801f0 is located 112 bytes inside of 600-byte region [0x616000080180,0x6160000803d8) freed by thread T0 here: #0 0x7fb78ebf17a8 in __interceptor_free (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xde7a8) #1 0x7fb78e5eff7c in qfree lib/memory.c:130 #2 0x5598c2750412 in pim_channel_oil_free pimd/pim_oil.c:84 #3 0x5598c2750c26 in pim_channel_oil_del pimd/pim_oil.c:199 #4 0x5598c27681d3 in tib_sg_gm_prune pimd/pim_tib.c:167 FRRouting#5 0x5598c27b0e7f in igmp_source_forward_stop pimd/pim_igmp.c:225 FRRouting#6 0x5598c27c25ac in igmp_source_timer pimd/pim_igmpv3.c:155 FRRouting#7 0x7fb78e68e1a7 in event_call lib/event.c:1995 FRRouting#8 0x7fb78e5d28a5 in frr_run lib/libfrr.c:1213 FRRouting#9 0x5598c27c781d in main pimd/pim_main.c:162 FRRouting#10 0x7fb78dbeac86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) Root Cause: ----------- This issue arises because the "source->source_channel_oil" pointer is deleted within the "igmp_source_forward_stop()" API. However when the igmp_source_delete function in pimd/pim_igmpv3.c at line 340 is called, it attempts to reference the "source->source_channel_oil" pointer, which now containes garbage value. Fix: ---- After deletion of "source_channel_oil" in igmp_source_forward_stop() API, it is necessary to set the "source->source_channel_oil" pointer to NULL value. This will prevent any issue that could arise from referencing in future. Issue: FRRouting#14195 Signed-off-by: Sarita Patra <saritap@vmware.com>

Bug is reporoduced in case of switching interfaces betwean VRFs. ospf6d is enabled and configured in each VRF. 'dest' can be removed from the route node in the time when the same route node waiting processing in another sub-queue. A route node must only be in one sub-queue at a time. Details: 1. Config: interface if0 ipv6 address 2001:db8:cafe:2::2/64 ipv6 nat inside ipv6 ospf6 area 0.0.0.51 ipv6 ospf6 cost 10 vrf test2 exit ! interface if1 ipv6 address 2001:db8:cafe:4::1/64 ipv6 nat outside ipv6 ospf6 area 0.0.0.0 ipv6 ospf6 cost 10 vrf test2 exit ! router ospf6 ospf6 router-id 2.2.2.2 exit ! router ospf6 vrf test1 ospf6 router-id 2.2.2.2 exit ! router ospf6 vrf test2 ospf6 router-id 2.2.2.2 exit I just quickly switched interfaces between different VRFs (default/test1/test2). 2. Log messages: Aug 02 16:51:56 ubuntu zebra[386985]: [MFYWV-KH3MC] process_subq_early_route_add: (0:?):2001:db8:cafe:2::/64: Inserting route rn 0x56267593de90, re 0x56267595ae40 (connected) existing 0x0, same_count 0 Aug 02 16:51:56 ubuntu zebra[386985]: [Q4T2G-E2SQF] process_subq_early_route_add: dumping RE entry 0x56267595ae40 for 2001:db8:cafe:2::/64 vrf default(0) Aug 02 16:51:56 ubuntu zebra[386985]: [GCGMT-SQR82] rib_link: (0:?):2001:db8:cafe:2::/64: rn 0x56267593de90 adding dest Aug 02 16:51:56 ubuntu zebra[386985]: [JF0K0-DVHWH] rib_meta_queue_add: (0:254):2001:db8:cafe:2::/64: queued rn 0x56267593de90 into sub-queue Connected Routes Aug 02 16:51:56 ubuntu zebra[386985]: [QE6V0-J8BG5] rib_delnode: (0:254):2001:db8:cafe:2::/64: rn 0x56267593de90, re 0x56267595ae40, removing Aug 02 16:51:56 ubuntu zebra[386985]: [KMPGN-JBRKW] rib_meta_queue_add: (0:254):2001:db8:cafe:2::/64: rn 0x56267593de90 is already queued in sub-queue Connected Routes Aug 02 16:51:56 ubuntu zebra[386985]: [MFYWV-KH3MC] process_subq_early_route_add: (0:254):2001:db8:cafe:2::/64: Inserting route rn 0x56267593de90, re 0x56267595abf0 (ospf6) existing 0x0, same_count 1 Aug 02 16:51:56 ubuntu zebra[386985]: [Q4T2G-E2SQF] process_subq_early_route_add: dumping RE entry 0x56267595abf0 for 2001:db8:cafe:2::/64 vrf default(0) Aug 02 16:51:56 ubuntu zebra[386985]: [KMPGN-JBRKW] rib_meta_queue_add: (0:254):2001:db8:cafe:2::/64: rn 0x56267593de90 is already queued in sub-queue Connected Routes Aug 02 16:51:56 ubuntu zebra[386985]: [YEYFX-TDSC2] process_subq_early_route_add: (0:254):2001:db8:cafe:2::/64: rn 0x56267593de90, removing unneeded re 0x56267595ae40 Aug 02 16:51:56 ubuntu zebra[386985]: [Y53JX-CBC5H] rib_unlink: (0:254):2001:db8:cafe:2::/64: rn 0x56267593de90, re 0x56267595ae40 Aug 02 16:51:56 ubuntu zebra[386985]: [QE6V0-J8BG5] rib_delnode: (0:254):2001:db8:cafe:2::/64: rn 0x56267593de90, re 0x56267595abf0, removing Aug 02 16:51:56 ubuntu zebra[386985]: [JF0K0-DVHWH] rib_meta_queue_add: (0:254):2001:db8:cafe:2::/64: queued rn 0x56267593de90 into sub-queue RIP/OSPF/ISIS/EIGRP/NHRP Routes Aug 02 16:51:56 ubuntu zebra[386985]: [NZNZ4-7P54Y] default(0:254):2001:db8:cafe:2::/64: Processing rn 0x56267593de90 Aug 02 16:51:56 ubuntu zebra[386985]: [ZJVZ4-XEGPF] default(0:254):2001:db8:cafe:2::/64: Examine re 0x56267595abf0 (ospf6) status: Removed Changed flags: None dist 110 metric 10 Aug 02 16:51:56 ubuntu zebra[386985]: [NM15X-X83N9] rib_process: (0:254):2001:db8:cafe:2::/64: rn 0x56267593de90, removing re 0x56267595abf0 Aug 02 16:51:56 ubuntu zebra[386985]: [Y53JX-CBC5H] rib_unlink: (0:254):2001:db8:cafe:2::/64: rn 0x56267593de90, re 0x56267595abf0 Aug 02 16:51:56 ubuntu zebra[386985]: [KT8QQ-45WQ0] rib_gc_dest: (0:?):2001:db8:cafe:2::/64: removing dest from table Aug 02 16:51:56 ubuntu zebra[386985]: [HH6N2-PDCJS] default(0:0):2001:db8:cafe:2::/64 rn 0x56267593de90 dequeued from sub-queue Connected Routes 3. ...and then assert: (gdb) bt #0 __pthread_kill_implementation (no_tid=0, signo=6, threadid=140662163115136) at ./nptl/pthread_kill.c:44 #1 __pthread_kill_internal (signo=6, threadid=140662163115136) at ./nptl/pthread_kill.c:78 #2 __GI___pthread_kill (threadid=140662163115136, signo=signo@entry=6) at ./nptl/pthread_kill.c:89 #3 0x00007fee76753476 in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26 #4 0x00007fee767397f3 in __GI_abort () at ./stdlib/abort.c:79 FRRouting#5 0x00007fee76a420fd in _zlog_assert_failed () from target:/usr/lib/x86_64-linux-gnu/frr/libfrr.so.0 FRRouting#6 0x0000562674efe0f0 in process_subq_route (qindex=7 '\a', lnode=0x562675940c60) at zebra/zebra_rib.c:2540 FRRouting#7 process_subq (qindex=META_QUEUE_NOTBGP, subq=0x562675574580) at zebra/zebra_rib.c:3055 FRRouting#8 meta_queue_process (dummy=<optimized out>, data=0x56267556d430) at zebra/zebra_rib.c:3091 FRRouting#9 0x00007fee76a386e8 in work_queue_run () from target:/usr/lib/x86_64-linux-gnu/frr/libfrr.so.0 FRRouting#10 0x00007fee76a31c91 in thread_call () from target:/usr/lib/x86_64-linux-gnu/frr/libfrr.so.0 FRRouting#11 0x00007fee769ee528 in frr_run () from target:/usr/lib/x86_64-linux-gnu/frr/libfrr.so.0 FRRouting#12 0x0000562674e97ec5 in main (argc=5, argv=0x7ffd1e275958) at zebra/main.c:478 (gdb) print lnode->data $10 = (void *) 0x56267593de90 (gdb) p/x *(struct route_node *)0x56267593de90 $11 = { p = { family = 0xa, prefixlen = 0x40, u = { prefix = 0x20, prefix4 = { s_addr = 0xb80d0120 }, prefix6 = { __in6_u = { __u6_addr8 = {0x20, 0x1, 0xd, 0xb8, 0xca, 0xfe, 0x0, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, __u6_addr16 = {0x120, 0xb80d, 0xfeca, 0x200, 0x0, 0x0, 0x0, 0x0}, __u6_addr32 = {0xb80d0120, 0x200feca, 0x0, 0x0} } }, ... table = 0x5626755ae010, parent = 0x5626755ae070, link = {0x0, 0x0}, lock = 0x4, nodehash = { hi = { next = 0x5626755ae0d0, hashval = 0xebe8bdbf } }, info = 0x0 3. What's happen: We removed unneeded re 0x56267595ae40 while adding re 0x56267595abf0. It was the last connected re, but rn 0x56267593de90 is still in the connected sub-queue. Then rib_delnode was called for 0x56267595abf0. (rn 0x56267593de90 is still in the connected sub-queue). rib_delnode have called rib_meta_queue_add which have checked, that rn is absent in sub-queue RIP/OSPF/ISIS/EIGRP/NHRP and have added rn in the second sub-queue. Fixes: d7ac4c4 ("zebra: Introduce early route processing on the MetaQ") Signed-off-by: Pavel Ivashchenko <pivashchenko@nfware.com>

Properly free the dynamically allocated memory held by `str` after its use. The change also maintains the return value of `nb_cli_apply_changes` by using 'ret' variable. The ASan leak log for reference: ``` *********************************************************************************** Address Sanitizer Error detected in bgp_set_aspath_replace.test_bgp_set_aspath_replace/r1.asan.bgpd.11586 ================================================================= ==11586==ERROR: LeakSanitizer: detected memory leaks Direct leak of 92 byte(s) in 3 object(s) allocated from: #0 0x7f4e2951db40 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb40) #1 0x7f4e28f19ea2 in qmalloc lib/memory.c:100 #2 0x7f4e28edbb08 in frrstr_join lib/frrstr.c:89 #3 0x7f4e28e9a601 in argv_concat lib/command.c:183 #4 0x56519adf8413 in set_aspath_replace_access_list_magic bgpd/bgp_routemap.c:6174 FRRouting#5 0x56519adf8942 in set_aspath_replace_access_list bgpd/bgp_routemap_clippy.c:683 FRRouting#6 0x7f4e28e9d548 in cmd_execute_command_real lib/command.c:993 FRRouting#7 0x7f4e28e9da0c in cmd_execute_command lib/command.c:1051 FRRouting#8 0x7f4e28e9de8b in cmd_execute lib/command.c:1218 FRRouting#9 0x7f4e28fc4f1c in vty_command lib/vty.c:591 FRRouting#10 0x7f4e28fc53c7 in vty_execute lib/vty.c:1354 FRRouting#11 0x7f4e28fcdc8d in vtysh_read lib/vty.c:2362 FRRouting#12 0x7f4e28fb8c8b in event_call lib/event.c:1979 FRRouting#13 0x7f4e28efd445 in frr_run lib/libfrr.c:1213 FRRouting#14 0x56519ac85d81 in main bgpd/bgp_main.c:510 FRRouting#15 0x7f4e27f40c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) SUMMARY: AddressSanitizer: 92 byte(s) leaked in 3 allocation(s). *********************************************************************************** *********************************************************************************** Address Sanitizer Error detected in bgp_set_aspath_exclude.test_bgp_set_aspath_exclude/r1.asan.bgpd.10385 ================================================================= ==10385==ERROR: LeakSanitizer: detected memory leaks Direct leak of 55 byte(s) in 2 object(s) allocated from: #0 0x7f6814fdab40 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb40) #1 0x7f68149d6ea2 in qmalloc lib/memory.c:100 #2 0x7f6814998b08 in frrstr_join lib/frrstr.c:89 #3 0x7f6814957601 in argv_concat lib/command.c:183 #4 0x5570e05117a1 in set_aspath_exclude_access_list_magic bgpd/bgp_routemap.c:6327 FRRouting#5 0x5570e05119da in set_aspath_exclude_access_list bgpd/bgp_routemap_clippy.c:836 FRRouting#6 0x7f681495a548 in cmd_execute_command_real lib/command.c:993 FRRouting#7 0x7f681495aa0c in cmd_execute_command lib/command.c:1051 FRRouting#8 0x7f681495ae8b in cmd_execute lib/command.c:1218 FRRouting#9 0x7f6814a81f1c in vty_command lib/vty.c:591 FRRouting#10 0x7f6814a823c7 in vty_execute lib/vty.c:1354 FRRouting#11 0x7f6814a8ac8d in vtysh_read lib/vty.c:2362 FRRouting#12 0x7f6814a75c8b in event_call lib/event.c:1979 FRRouting#13 0x7f68149ba445 in frr_run lib/libfrr.c:1213 FRRouting#14 0x5570e03a0d81 in main bgpd/bgp_main.c:510 FRRouting#15 0x7f68139fdc86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) SUMMARY: AddressSanitizer: 55 byte(s) leaked in 2 allocation(s). *********************************************************************************** ``` Signed-off-by: Keelan Cannoo <keelan.cannoo@icloud.com>

Properly free the dynamically allocated memory held by `str` after its use. The change also maintains the return value of `nb_cli_apply_changes` by using `ret` variable. The ASan leak log for reference: ``` Direct leak of 55 byte(s) in 2 object(s) allocated from: #0 0x7f16f285f867 in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:145 #1 0x7f16f23fda11 in qmalloc ../lib/memory.c:100 #2 0x7f16f23a01a0 in frrstr_join ../lib/frrstr.c:89 #3 0x7f16f23418c7 in argv_concat ../lib/command.c:183 #4 0x55aba24731f2 in set_aspath_exclude_access_list_magic ../bgpd/bgp_routemap.c:6327 FRRouting#5 0x55aba2455cf4 in set_aspath_exclude_access_list bgpd/bgp_routemap_clippy.c:836 FRRouting#6 0x7f16f2345d61 in cmd_execute_command_real ../lib/command.c:993 FRRouting#7 0x7f16f23460ee in cmd_execute_command ../lib/command.c:1052 FRRouting#8 0x7f16f2346dc0 in cmd_execute ../lib/command.c:1218 FRRouting#9 0x7f16f24f7197 in vty_command ../lib/vty.c:591 FRRouting#10 0x7f16f24fc07c in vty_execute ../lib/vty.c:1354 FRRouting#11 0x7f16f250247a in vtysh_read ../lib/vty.c:2362 FRRouting#12 0x7f16f24e72f4 in event_call ../lib/event.c:1979 FRRouting#13 0x7f16f23d1828 in frr_run ../lib/libfrr.c:1213 FRRouting#14 0x55aba2269e52 in main ../bgpd/bgp_main.c:510 FRRouting#15 0x7f16f1dbfd8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58 ``` Signed-off-by: Keelan Cannoo <keelan.cannoo@icloud.com>

In scenarios where no backup paths are available, ensure proper memory management by deleting `q_space->vertex_list`. This prevents memory leaks. The ASan leak log for reference: ``` Direct leak of 80 byte(s) in 2 object(s) allocated from: #0 0x7fcf8c70aa37 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154 #1 0x7fcf8c2a8a45 in qcalloc ../lib/memory.c:105 #2 0x7fcf8c27d0cc in list_new ../lib/linklist.c:49 #3 0x55d6e8385e35 in ospf_spf_init ../ospfd/ospf_spf.c:540 #4 0x55d6e838c30d in ospf_spf_calculate ../ospfd/ospf_spf.c:1736 FRRouting#5 0x55d6e83933cf in ospf_ti_lfa_generate_q_spaces ../ospfd/ospf_ti_lfa.c:673 FRRouting#6 0x55d6e8394214 in ospf_ti_lfa_generate_p_space ../ospfd/ospf_ti_lfa.c:812 FRRouting#7 0x55d6e8394c63 in ospf_ti_lfa_generate_p_spaces ../ospfd/ospf_ti_lfa.c:923 FRRouting#8 0x55d6e8396390 in ospf_ti_lfa_compute ../ospfd/ospf_ti_lfa.c:1101 FRRouting#9 0x55d6e838ca48 in ospf_spf_calculate_area ../ospfd/ospf_spf.c:1811 FRRouting#10 0x55d6e838cd73 in ospf_spf_calculate_areas ../ospfd/ospf_spf.c:1840 FRRouting#11 0x55d6e838cfb0 in ospf_spf_calculate_schedule_worker ../ospfd/ospf_spf.c:1871 FRRouting#12 0x7fcf8c3922e4 in event_call ../lib/event.c:1979 FRRouting#13 0x7fcf8c27c828 in frr_run ../lib/libfrr.c:1213 FRRouting#14 0x55d6e82eeb6d in main ../ospfd/ospf_main.c:249 FRRouting#15 0x7fcf8bd59d8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58 ``` Signed-off-by: Keelan Cannoo <keelan.cannoo@icloud.com>

This commit ensures that sequence data and associated structures are correctly deleted to prevent memory leaks The ASan leak log for reference: ``` Direct leak of 432 byte(s) in 1 object(s) allocated from: #0 0x7f911ebaba37 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154 #1 0x7f911e749a4e in qcalloc ../lib/memory.c:105 #2 0x564fd444b2d3 in pbrms_get ../pbrd/pbr_map.c:527 #3 0x564fd443a82d in pbr_map ../pbrd/pbr_vty.c:90 #4 0x7f911e691d61 in cmd_execute_command_real ../lib/command.c:993 FRRouting#5 0x7f911e6920ee in cmd_execute_command ../lib/command.c:1052 FRRouting#6 0x7f911e692dc0 in cmd_execute ../lib/command.c:1218 FRRouting#7 0x7f911e843197 in vty_command ../lib/vty.c:591 FRRouting#8 0x7f911e84807c in vty_execute ../lib/vty.c:1354 FRRouting#9 0x7f911e84e47a in vtysh_read ../lib/vty.c:2362 FRRouting#10 0x7f911e8332f4 in event_call ../lib/event.c:1979 FRRouting#11 0x7f911e71d828 in frr_run ../lib/libfrr.c:1213 FRRouting#12 0x564fd4425795 in main ../pbrd/pbr_main.c:168 FRRouting#13 0x7f911e2e1d8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58 ``` Signed-off-by: Keelan Cannoo <keelan.cannoo@icloud.com>

This commit ensures proper cleanup by clearing the `algo->pdst` pointer if it points to a path that is being deleted. It addresses memory leaks by freeing memory held by `algo->pdst` that might not have been released during the cleanup of processed paths. The ASan leak log for reference: ``` Direct leak of 96 byte(s) in 1 object(s) allocated from: #0 0x7fbffcec9a37 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154 #1 0x7fbffca67a81 in qcalloc ../lib/memory.c:105 #2 0x7fbffc9d1a54 in cpath_new ../lib/cspf.c:44 #3 0x7fbffc9d2829 in cspf_init ../lib/cspf.c:256 #4 0x7fbffc9d295d in cspf_init_v4 ../lib/cspf.c:287 FRRouting#5 0x5601dcd34d3f in show_sharp_cspf_magic ../sharpd/sharp_vty.c:1262 FRRouting#6 0x5601dcd2c2be in show_sharp_cspf sharpd/sharp_vty_clippy.c:1869 FRRouting#7 0x7fbffc9afd61 in cmd_execute_command_real ../lib/command.c:993 FRRouting#8 0x7fbffc9b00ee in cmd_execute_command ../lib/command.c:1052 FRRouting#9 0x7fbffc9b0dc0 in cmd_execute ../lib/command.c:1218 FRRouting#10 0x7fbffcb611c7 in vty_command ../lib/vty.c:591 FRRouting#11 0x7fbffcb660ac in vty_execute ../lib/vty.c:1354 FRRouting#12 0x7fbffcb6c4aa in vtysh_read ../lib/vty.c:2362 FRRouting#13 0x7fbffcb51324 in event_call ../lib/event.c:1979 FRRouting#14 0x7fbffca3b872 in frr_run ../lib/libfrr.c:1213 FRRouting#15 0x5601dcd11c6f in main ../sharpd/sharp_main.c:177 FRRouting#16 0x7fbffc5ffd8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58 Indirect leak of 40 byte(s) in 1 object(s) allocated from: #0 0x7fbffcec9a37 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154 #1 0x7fbffca67a81 in qcalloc ../lib/memory.c:105 #2 0x7fbffca3c108 in list_new ../lib/linklist.c:49 #3 0x7fbffc9d1acc in cpath_new ../lib/cspf.c:47 #4 0x7fbffc9d2829 in cspf_init ../lib/cspf.c:256 FRRouting#5 0x7fbffc9d295d in cspf_init_v4 ../lib/cspf.c:287 FRRouting#6 0x5601dcd34d3f in show_sharp_cspf_magic ../sharpd/sharp_vty.c:1262 FRRouting#7 0x5601dcd2c2be in show_sharp_cspf sharpd/sharp_vty_clippy.c:1869 FRRouting#8 0x7fbffc9afd61 in cmd_execute_command_real ../lib/command.c:993 FRRouting#9 0x7fbffc9b00ee in cmd_execute_command ../lib/command.c:1052 FRRouting#10 0x7fbffc9b0dc0 in cmd_execute ../lib/command.c:1218 FRRouting#11 0x7fbffcb611c7 in vty_command ../lib/vty.c:591 FRRouting#12 0x7fbffcb660ac in vty_execute ../lib/vty.c:1354 FRRouting#13 0x7fbffcb6c4aa in vtysh_read ../lib/vty.c:2362 FRRouting#14 0x7fbffcb51324 in event_call ../lib/event.c:1979 FRRouting#15 0x7fbffca3b872 in frr_run ../lib/libfrr.c:1213 FRRouting#16 0x5601dcd11c6f in main ../sharpd/sharp_main.c:177 FRRouting#17 0x7fbffc5ffd8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58 ``` Signed-off-by: Keelan Cannoo <keelan.cannoo@icloud.com>

Previously when updating vertices, edges and subnets, when no update was required due to existing value matching the new one, memory associated with the new object was not being freed leading to memory leaks. This commit fixes memory leak by freeing memory associated with new object when update is unnecessary. The ASan leak log for reference: ``` Direct leak of 312 byte(s) in 3 object(s) allocated from: #0 0x7faf3afbfa37 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154 #1 0x7faf3ab5dbcf in qcalloc ../lib/memory.c:105 #2 0x7faf3ab42e00 in ls_parse_prefix ../lib/link_state.c:1323 #3 0x7faf3ab43c87 in ls_parse_msg ../lib/link_state.c:1373 #4 0x7faf3ab476a5 in ls_stream2ted ../lib/link_state.c:1885 FRRouting#5 0x564e045046aa in sharp_opaque_handler ../sharpd/sharp_zebra.c:792 FRRouting#6 0x7faf3aca35a9 in zclient_read ../lib/zclient.c:4410 FRRouting#7 0x7faf3ac47474 in event_call ../lib/event.c:1979 FRRouting#8 0x7faf3ab318b4 in frr_run ../lib/libfrr.c:1213 FRRouting#9 0x564e044fdc6f in main ../sharpd/sharp_main.c:177 FRRouting#10 0x7faf3a6f4d8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58 SUMMARY: AddressSanitizer: 312 byte(s) leaked in 3 allocation(s). ``` Signed-off-by: Keelan Cannoo <keelan.cannoo@icloud.com>

…Discarded The newly created LSA `new` is now properly freed to prevent memory leaks when a non-self-originated Grace LSA which is not in LSDB is received. The ASan leak log for reference: ``` Direct leak of 400 byte(s) in 2 object(s) allocated from: #0 0x7f70e984bd28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28) #1 0x7f70e92481c5 in qcalloc lib/memory.c:105 #2 0x55b35068c975 in ospf6_lsa_alloc ospf6d/ospf6_lsa.c:710 #3 0x55b35068c9f9 in ospf6_lsa_create ospf6d/ospf6_lsa.c:725 #4 0x55b35065ab2c in ospf6_receive_lsa ospf6d/ospf6_flood.c:912 FRRouting#5 0x55b3506a1413 in ospf6_lsupdate_recv ospf6d/ospf6_message.c:1621 FRRouting#6 0x55b3506a1413 in ospf6_read_helper ospf6d/ospf6_message.c:1896 FRRouting#7 0x55b3506a1413 in ospf6_receive ospf6d/ospf6_message.c:1925 FRRouting#8 0x7f70e92e6ccb in event_call lib/event.c:1979 FRRouting#9 0x7f70e922b488 in frr_run lib/libfrr.c:1213 FRRouting#10 0x55b35064345e in main ospf6d/ospf6_main.c:250 FRRouting#11 0x7f70e8843c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) Indirect leak of 72 byte(s) in 2 object(s) allocated from: #0 0x7f70e984bb40 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb40) #1 0x7f70e9247ee5 in qmalloc lib/memory.c:100 #2 0x55b35068c987 in ospf6_lsa_alloc ospf6d/ospf6_lsa.c:711 #3 0x55b35068c9f9 in ospf6_lsa_create ospf6d/ospf6_lsa.c:725 #4 0x55b35065ab2c in ospf6_receive_lsa ospf6d/ospf6_flood.c:912 FRRouting#5 0x55b3506a1413 in ospf6_lsupdate_recv ospf6d/ospf6_message.c:1621 FRRouting#6 0x55b3506a1413 in ospf6_read_helper ospf6d/ospf6_message.c:1896 FRRouting#7 0x55b3506a1413 in ospf6_receive ospf6d/ospf6_message.c:1925 FRRouting#8 0x7f70e92e6ccb in event_call lib/event.c:1979 FRRouting#9 0x7f70e922b488 in frr_run lib/libfrr.c:1213 FRRouting#10 0x55b35064345e in main ospf6d/ospf6_main.c:250 FRRouting#11 0x7f70e8843c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) SUMMARY: AddressSanitizer: 472 byte(s) leaked in 4 allocation(s). ``` Signed-off-by: Keelan Cannoo <keelan.cannoo@icloud.com>

ERROR: AddressSanitizer: heap-use-after-free on address 0x6160000801f0 at pc 0x5598c27c213f bp 0x7ffc04462060 sp 0x7ffc04462050 READ of size 4 at 0x6160000801f0 thread T0 #0 0x5598c27c213e in igmp_source_delete pimd/pim_igmpv3.c:340 #1 0x5598c27c277f in igmp_source_delete_expired pimd/pim_igmpv3.c:405 #2 0x5598c27b34c7 in igmp_group_timer pimd/pim_igmp.c:1324 #3 0x7fb78e68e1a7 in event_call lib/event.c:1995 #4 0x7fb78e5d28a5 in frr_run lib/libfrr.c:1213 FRRouting#5 0x5598c27c781d in main pimd/pim_main.c:162 FRRouting#6 0x7fb78dbeac86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) FRRouting#7 0x5598c26f0ab9 in _start (/usr/lib/frr/pimd+0x103ab9) 0x6160000801f0 is located 112 bytes inside of 600-byte region [0x616000080180,0x6160000803d8) freed by thread T0 here: #0 0x7fb78ebf17a8 in __interceptor_free (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xde7a8) #1 0x7fb78e5eff7c in qfree lib/memory.c:130 #2 0x5598c2750412 in pim_channel_oil_free pimd/pim_oil.c:84 #3 0x5598c2750c26 in pim_channel_oil_del pimd/pim_oil.c:199 #4 0x5598c27681d3 in tib_sg_gm_prune pimd/pim_tib.c:167 FRRouting#5 0x5598c27b0e7f in igmp_source_forward_stop pimd/pim_igmp.c:225 FRRouting#6 0x5598c27c25ac in igmp_source_timer pimd/pim_igmpv3.c:155 FRRouting#7 0x7fb78e68e1a7 in event_call lib/event.c:1995 FRRouting#8 0x7fb78e5d28a5 in frr_run lib/libfrr.c:1213 FRRouting#9 0x5598c27c781d in main pimd/pim_main.c:162 FRRouting#10 0x7fb78dbeac86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) Root Cause: ----------- This issue arises because the "source->source_channel_oil" pointer is deleted within the "igmp_source_forward_stop()" API. However when the igmp_source_delete function in pimd/pim_igmpv3.c at line 340 is called, it attempts to reference the "source->source_channel_oil" pointer, which now containes garbage value. Fix: ---- After deletion of "source_channel_oil" in igmp_source_forward_stop() API, it is necessary to set the "source->source_channel_oil" pointer to NULL value. This will prevent any issue that could arise from referencing in future. Issue: FRRouting#14195 Signed-off-by: Sarita Patra <saritap@vmware.com>

Addressed a memory leak in OSPF by fixing the improper deallocation of area range nodes when removed from the table. Introducing a new function, `ospf_range_table_node_destroy` for proper node cleanup, resolved the issue. The ASan leak log for reference: ``` Direct leak of 56 byte(s) in 2 object(s) allocated from: #0 0x7faf661d1d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28) #1 0x7faf65bce1e9 in qcalloc lib/memory.c:105 #2 0x55a66e0b61cd in ospf_area_range_new ospfd/ospf_abr.c:43 #3 0x55a66e0b61cd in ospf_area_range_set ospfd/ospf_abr.c:195 #4 0x55a66e07f2eb in ospf_area_range ospfd/ospf_vty.c:631 FRRouting#5 0x7faf65b51548 in cmd_execute_command_real lib/command.c:993 FRRouting#6 0x7faf65b51f79 in cmd_execute_command_strict lib/command.c:1102 FRRouting#7 0x7faf65b51fd8 in command_config_read_one_line lib/command.c:1262 FRRouting#8 0x7faf65b522bf in config_from_file lib/command.c:1315 FRRouting#9 0x7faf65c832df in vty_read_file lib/vty.c:2605 FRRouting#10 0x7faf65c83409 in vty_read_config lib/vty.c:2851 FRRouting#11 0x7faf65bb0341 in frr_config_read_in lib/libfrr.c:977 FRRouting#12 0x7faf65c6cceb in event_call lib/event.c:1979 FRRouting#13 0x7faf65bb1488 in frr_run lib/libfrr.c:1213 FRRouting#14 0x55a66dfb28c4 in main ospfd/ospf_main.c:249 FRRouting#15 0x7faf651c9c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) SUMMARY: AddressSanitizer: 56 byte(s) leaked in 2 allocation(s). ``` Signed-off-by: Keelan Cannoo <keelan.cannoo@icloud.com>

This commit frees dynamically allocated memory associated with `pbrms->nhgrp_name` and `pbrms->dst` which were causing memory leaks. The ASan leak log for reference: ``` ================================================================= ==107458==ERROR: LeakSanitizer: detected memory leaks Direct leak of 56 byte(s) in 1 object(s) allocated from: #0 0x7f87d644ca37 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154 #1 0x7f87d5feaa37 in qcalloc ../lib/memory.c:105 #2 0x7f87d6054ffd in prefix_new ../lib/prefix.c:1180 #3 0x55722f3c2885 in pbr_map_match_dst_magic ../pbrd/pbr_vty.c:302 #4 0x55722f3b5c24 in pbr_map_match_dst pbrd/pbr_vty_clippy.c:228 FRRouting#5 0x7f87d5f32d61 in cmd_execute_command_real ../lib/command.c:993 FRRouting#6 0x7f87d5f330ee in cmd_execute_command ../lib/command.c:1052 FRRouting#7 0x7f87d5f33dc0 in cmd_execute ../lib/command.c:1218 FRRouting#8 0x7f87d60e4177 in vty_command ../lib/vty.c:591 FRRouting#9 0x7f87d60e905c in vty_execute ../lib/vty.c:1354 FRRouting#10 0x7f87d60ef45a in vtysh_read ../lib/vty.c:2362 FRRouting#11 0x7f87d60d42d4 in event_call ../lib/event.c:1979 FRRouting#12 0x7f87d5fbe828 in frr_run ../lib/libfrr.c:1213 FRRouting#13 0x55722f3ac795 in main ../pbrd/pbr_main.c:168 FRRouting#14 0x7f87d5b82d8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58 Direct leak of 2 byte(s) in 1 object(s) allocated from: #0 0x7f87d63f39a7 in __interceptor_strdup ../../../../src/libsanitizer/asan/asan_interceptors.cpp:454 #1 0x7f87d5feaafc in qstrdup ../lib/memory.c:117 #2 0x55722f3da139 in pbr_nht_set_seq_nhg ../pbrd/pbr_nht.c:551 #3 0x55722f3c693f in pbr_map_nexthop_group_magic ../pbrd/pbr_vty.c:1140 #4 0x55722f3bdaae in pbr_map_nexthop_group pbrd/pbr_vty_clippy.c:1284 FRRouting#5 0x7f87d5f32d61 in cmd_execute_command_real ../lib/command.c:993 FRRouting#6 0x7f87d5f330ee in cmd_execute_command ../lib/command.c:1052 FRRouting#7 0x7f87d5f33dc0 in cmd_execute ../lib/command.c:1218 FRRouting#8 0x7f87d60e4177 in vty_command ../lib/vty.c:591 FRRouting#9 0x7f87d60e905c in vty_execute ../lib/vty.c:1354 FRRouting#10 0x7f87d60ef45a in vtysh_read ../lib/vty.c:2362 FRRouting#11 0x7f87d60d42d4 in event_call ../lib/event.c:1979 FRRouting#12 0x7f87d5fbe828 in frr_run ../lib/libfrr.c:1213 FRRouting#13 0x55722f3ac795 in main ../pbrd/pbr_main.c:168 FRRouting#14 0x7f87d5b82d8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58 SUMMARY: AddressSanitizer: 58 byte(s) leaked in 2 allocation(s). ``` Signed-off-by: Keelan Cannoo <keelan.cannoo@icloud.com>

Fixes a memory leak in ospfd where the external aggregator was not released after its associated route node is deleted. The ASan leak log for reference: ``` *********************************************************************************** Address Sanitizer Error detected in ospf_basic_functionality.test_ospf_asbr_summary_topo1/r0.asan.ospfd.31502 ================================================================= ==31502==ERROR: LeakSanitizer: detected memory leaks Direct leak of 200 byte(s) in 5 object(s) allocated from: #0 0x7fdb30665d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28) #1 0x7fdb300620da in qcalloc lib/memory.c:105 #2 0x55e53c2da5fa in ospf_external_aggregator_new ospfd/ospf_asbr.c:396 #3 0x55e53c2dead3 in ospf_asbr_external_aggregator_set ospfd/ospf_asbr.c:1123 #4 0x55e53c27c921 in ospf_external_route_aggregation ospfd/ospf_vty.c:10264 FRRouting#5 0x7fdb2ffe5428 in cmd_execute_command_real lib/command.c:993 FRRouting#6 0x7fdb2ffe58ec in cmd_execute_command lib/command.c:1051 FRRouting#7 0x7fdb2ffe5d6b in cmd_execute lib/command.c:1218 FRRouting#8 0x7fdb3010ce2a in vty_command lib/vty.c:591 FRRouting#9 0x7fdb3010d2d5 in vty_execute lib/vty.c:1354 FRRouting#10 0x7fdb30115b9b in vtysh_read lib/vty.c:2362 FRRouting#11 0x7fdb30100b99 in event_call lib/event.c:1979 FRRouting#12 0x7fdb30045379 in frr_run lib/libfrr.c:1213 FRRouting#13 0x55e53c1ccab4 in main ospfd/ospf_main.c:249 FRRouting#14 0x7fdb2f65dc86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) Direct leak of 40 byte(s) in 1 object(s) allocated from: #0 0x7fdb30665d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28) #1 0x7fdb300620da in qcalloc lib/memory.c:105 #2 0x55e53c2da5fa in ospf_external_aggregator_new ospfd/ospf_asbr.c:396 #3 0x55e53c2dedd3 in ospf_asbr_external_rt_no_advertise ospfd/ospf_asbr.c:1182 #4 0x55e53c27cf10 in ospf_external_route_aggregation_no_adrvertise ospfd/ospf_vty.c:10626 FRRouting#5 0x7fdb2ffe5428 in cmd_execute_command_real lib/command.c:993 FRRouting#6 0x7fdb2ffe58ec in cmd_execute_command lib/command.c:1051 FRRouting#7 0x7fdb2ffe5d6b in cmd_execute lib/command.c:1218 FRRouting#8 0x7fdb3010ce2a in vty_command lib/vty.c:591 FRRouting#9 0x7fdb3010d2d5 in vty_execute lib/vty.c:1354 FRRouting#10 0x7fdb30115b9b in vtysh_read lib/vty.c:2362 FRRouting#11 0x7fdb30100b99 in event_call lib/event.c:1979 FRRouting#12 0x7fdb30045379 in frr_run lib/libfrr.c:1213 FRRouting#13 0x55e53c1ccab4 in main ospfd/ospf_main.c:249 FRRouting#14 0x7fdb2f65dc86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) SUMMARY: AddressSanitizer: 240 byte(s) leaked in 6 allocation(s). *********************************************************************************** ``` Signed-off-by: Keelan Cannoo <keelan.cannoo@icloud.com>

Extend Router Capabilities TLV pack function to pack SR-Algorithm Sub-TLV with infomation relevant for SRv6 (RFC 9352 section #3). Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>

Add `struct isis_srv6_sid_structure` data structure to represent an SRv6 SID structure (as defined in RFC 8986 section #3.1). The struct has the following members: * loc_block_len: locator block length * loc_node_len: locator node length * func_len: function length * arg_len: argument length Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>

ERROR: AddressSanitizer: heap-use-after-free on address 0x6160000801f0 at pc 0x5598c27c213f bp 0x7ffc04462060 sp 0x7ffc04462050 READ of size 4 at 0x6160000801f0 thread T0 #0 0x5598c27c213e in igmp_source_delete pimd/pim_igmpv3.c:340 #1 0x5598c27c277f in igmp_source_delete_expired pimd/pim_igmpv3.c:405 #2 0x5598c27b34c7 in igmp_group_timer pimd/pim_igmp.c:1324 #3 0x7fb78e68e1a7 in event_call lib/event.c:1995 #4 0x7fb78e5d28a5 in frr_run lib/libfrr.c:1213 FRRouting#5 0x5598c27c781d in main pimd/pim_main.c:162 FRRouting#6 0x7fb78dbeac86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) FRRouting#7 0x5598c26f0ab9 in _start (/usr/lib/frr/pimd+0x103ab9) 0x6160000801f0 is located 112 bytes inside of 600-byte region [0x616000080180,0x6160000803d8) freed by thread T0 here: #0 0x7fb78ebf17a8 in __interceptor_free (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xde7a8) #1 0x7fb78e5eff7c in qfree lib/memory.c:130 #2 0x5598c2750412 in pim_channel_oil_free pimd/pim_oil.c:84 #3 0x5598c2750c26 in pim_channel_oil_del pimd/pim_oil.c:199 #4 0x5598c27681d3 in tib_sg_gm_prune pimd/pim_tib.c:167 FRRouting#5 0x5598c27b0e7f in igmp_source_forward_stop pimd/pim_igmp.c:225 FRRouting#6 0x5598c27c25ac in igmp_source_timer pimd/pim_igmpv3.c:155 FRRouting#7 0x7fb78e68e1a7 in event_call lib/event.c:1995 FRRouting#8 0x7fb78e5d28a5 in frr_run lib/libfrr.c:1213 FRRouting#9 0x5598c27c781d in main pimd/pim_main.c:162 FRRouting#10 0x7fb78dbeac86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) Root Cause: ----------- This issue arises because the "source->source_channel_oil" pointer is deleted within the "igmp_source_forward_stop()" API. However when the igmp_source_delete function in pimd/pim_igmpv3.c at line 340 is called, it attempts to reference the "source->source_channel_oil" pointer, which now containes garbage value. Fix: ---- After deletion of "source_channel_oil" in igmp_source_forward_stop() API, it is necessary to set the "source->source_channel_oil" pointer to NULL value. This will prevent any issue that could arise from referencing in future. Issue: FRRouting#14195 Signed-off-by: Sarita Patra <saritap@vmware.com>

`ng` was not properly freed, leading to a memory leak. The commit calls `nexthop_group_delete` to free memory associated with `ng`. The ASan leak log for reference: ``` *********************************************************************************** Address Sanitizer Error detected in isis_topo1.test_isis_topo1/r5.asan.zebra.24308 ================================================================= ==24308==ERROR: LeakSanitizer: detected memory leaks Direct leak of 32 byte(s) in 1 object(s) allocated from: #0 0x7f4f47b43d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28) #1 0x7f4f4753c0a8 in qcalloc lib/memory.c:105 #2 0x7f4f47559526 in nexthop_group_new lib/nexthop_group.c:270 #3 0x562ded6a39d4 in zebra_add_import_table_entry zebra/redistribute.c:681 #4 0x562ded787c35 in rib_link zebra/zebra_rib.c:3972 FRRouting#5 0x562ded787c35 in rib_addnode zebra/zebra_rib.c:3993 FRRouting#6 0x562ded787c35 in process_subq_early_route_add zebra/zebra_rib.c:2860 FRRouting#7 0x562ded787c35 in process_subq_early_route zebra/zebra_rib.c:3138 FRRouting#8 0x562ded787c35 in process_subq zebra/zebra_rib.c:3178 FRRouting#9 0x562ded787c35 in meta_queue_process zebra/zebra_rib.c:3228 FRRouting#10 0x7f4f475f7118 in work_queue_run lib/workqueue.c:266 FRRouting#11 0x7f4f475dc7f2 in event_call lib/event.c:1969 FRRouting#12 0x7f4f4751f347 in frr_run lib/libfrr.c:1213 FRRouting#13 0x562ded69e818 in main zebra/main.c:486 FRRouting#14 0x7f4f468ffc86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) Indirect leak of 152 byte(s) in 1 object(s) allocated from: #0 0x7f4f47b43d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28) #1 0x7f4f4753c0a8 in qcalloc lib/memory.c:105 #2 0x7f4f475510ad in nexthop_new lib/nexthop.c:376 #3 0x7f4f475539c5 in nexthop_dup lib/nexthop.c:914 #4 0x7f4f4755b27a in copy_nexthops lib/nexthop_group.c:444 FRRouting#5 0x562ded6a3a1c in zebra_add_import_table_entry zebra/redistribute.c:682 FRRouting#6 0x562ded787c35 in rib_link zebra/zebra_rib.c:3972 FRRouting#7 0x562ded787c35 in rib_addnode zebra/zebra_rib.c:3993 FRRouting#8 0x562ded787c35 in process_subq_early_route_add zebra/zebra_rib.c:2860 FRRouting#9 0x562ded787c35 in process_subq_early_route zebra/zebra_rib.c:3138 FRRouting#10 0x562ded787c35 in process_subq zebra/zebra_rib.c:3178 FRRouting#11 0x562ded787c35 in meta_queue_process zebra/zebra_rib.c:3228 FRRouting#12 0x7f4f475f7118 in work_queue_run lib/workqueue.c:266 FRRouting#13 0x7f4f475dc7f2 in event_call lib/event.c:1969 FRRouting#14 0x7f4f4751f347 in frr_run lib/libfrr.c:1213 FRRouting#15 0x562ded69e818 in main zebra/main.c:486 FRRouting#16 0x7f4f468ffc86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) SUMMARY: AddressSanitizer: 184 byte(s) leaked in 2 allocation(s). *********************************************************************************** ``` Signed-off-by: Keelan Cannoo <keelan.cannoo@icloud.com>

ERROR: AddressSanitizer: heap-use-after-free on address 0x6160000801f0 at pc 0x5598c27c213f bp 0x7ffc04462060 sp 0x7ffc04462050 READ of size 4 at 0x6160000801f0 thread T0 #0 0x5598c27c213e in igmp_source_delete pimd/pim_igmpv3.c:340 #1 0x5598c27c277f in igmp_source_delete_expired pimd/pim_igmpv3.c:405 #2 0x5598c27b34c7 in igmp_group_timer pimd/pim_igmp.c:1324 #3 0x7fb78e68e1a7 in event_call lib/event.c:1995 #4 0x7fb78e5d28a5 in frr_run lib/libfrr.c:1213 FRRouting#5 0x5598c27c781d in main pimd/pim_main.c:162 FRRouting#6 0x7fb78dbeac86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) FRRouting#7 0x5598c26f0ab9 in _start (/usr/lib/frr/pimd+0x103ab9) 0x6160000801f0 is located 112 bytes inside of 600-byte region [0x616000080180,0x6160000803d8) freed by thread T0 here: #0 0x7fb78ebf17a8 in __interceptor_free (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xde7a8) #1 0x7fb78e5eff7c in qfree lib/memory.c:130 #2 0x5598c2750412 in pim_channel_oil_free pimd/pim_oil.c:84 #3 0x5598c2750c26 in pim_channel_oil_del pimd/pim_oil.c:199 #4 0x5598c27681d3 in tib_sg_gm_prune pimd/pim_tib.c:167 FRRouting#5 0x5598c27b0e7f in igmp_source_forward_stop pimd/pim_igmp.c:225 FRRouting#6 0x5598c27c25ac in igmp_source_timer pimd/pim_igmpv3.c:155 FRRouting#7 0x7fb78e68e1a7 in event_call lib/event.c:1995 FRRouting#8 0x7fb78e5d28a5 in frr_run lib/libfrr.c:1213 FRRouting#9 0x5598c27c781d in main pimd/pim_main.c:162 FRRouting#10 0x7fb78dbeac86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86) Root Cause: ----------- This issue arises because the "source->source_channel_oil" pointer is deleted within the "igmp_source_forward_stop()" API. However when the igmp_source_delete function in pimd/pim_igmpv3.c at line 340 is called, it attempts to reference the "source->source_channel_oil" pointer, which now containes garbage value. Fix: ---- After deletion of "source_channel_oil" in igmp_source_forward_stop() API, it is necessary to set the "source->source_channel_oil" pointer to NULL value. This will prevent any issue that could arise from referencing in future. Issue: FRRouting#14195 Signed-off-by: Sarita Patra <saritap@vmware.com>

srimohans approved these changes Aug 17, 2018

View reviewed changes

patrasar force-pushed the 2847 branch from ce07120 to 90e65cf Compare August 22, 2018 15:12

patrasar force-pushed the master branch from 95c1c50 to d55b549 Compare May 29, 2019 09:01

patrasar closed this May 21, 2022

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

bgpd: Fix memory leak bgp show command #3

bgpd: Fix memory leak bgp show command #3

patrasar commented Aug 17, 2018

patrasar commented May 21, 2022

bgpd: Fix memory leak bgp show command #3

bgpd: Fix memory leak bgp show command #3

Conversation

patrasar commented Aug 17, 2018

patrasar commented May 21, 2022