Merge pull request #1 from torvalds/master #262

sidcode · 2016-03-12T17:13:33Z

keeping up to date with the main linux branch

updating my linux fork

lkl: Fix lkl_sys_halt and memory leak of TIF_HOST_THREAD

Fixed issues: CHECK: Alignment should match open parenthesis torvalds#71: FILE: drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c:71: + audio_info("alsa_stream=%p substream=%p\n", alsa_stream, + alsa_stream ? alsa_stream->substream : 0); CHECK: Alignment should match open parenthesis torvalds#262: FILE: drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c:262: +static int snd_bcm2835_pcm_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) CHECK: Alignment should match open parenthesis torvalds#315: FILE: drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c:315: + err = bcm2835_audio_set_params(alsa_stream, channels, + alsa_stream->params_rate, CHECK: Alignment should match open parenthesis torvalds#384: FILE: drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c:384: + audio_debug("bcm2835_AUDIO_TRIGGER_START running=%d\n", + alsa_stream->running); CHECK: Alignment should match open parenthesis torvalds#391: FILE: drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c:391: + bytes_to_frames(runtime, + alsa_stream->pos); CHECK: Alignment should match open parenthesis torvalds#436: FILE: drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c:436: + audio_debug("pcm_pointer... (%d) hwptr=%d appl=%d pos=%d\n", 0, + frames_to_bytes(runtime, runtime->status->hw_ptr), CHECK: Alignment should match open parenthesis torvalds#447: FILE: drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c:447: +static int snd_bcm2835_pcm_lib_ioctl(struct snd_pcm_substream *substream, + unsigned int cmd, void *arg) CHECK: Alignment should match open parenthesis torvalds#452: FILE: drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c:452: + audio_info(" .. substream=%p, cmd=%d, arg=%p (%x) ret=%d\n", substream, + cmd, arg, arg ? *(unsigned *) arg : 0, ret); CHECK: Alignment should match open parenthesis torvalds#544: FILE: drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c:544: + snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS, + snd_dma_continuous_data(GFP_KERNEL), Signed-off-by: Andrea della Porta <sfaragnaus@gmail.com>

Fengguang is running into a warning from the buddy allocator: > swapper/0: page allocation failure: order:9, mode:0x14040c0(GFP_KERNEL|__GFP_COMP), nodemask=(null) > CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.17.0-rc1 #262 > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014 > Call Trace: ... > __kmalloc+0x14b/0x180: ____cache_alloc at mm/slab.c:3127 > stm_register_device+0xf3/0x5c0: stm_register_device at drivers/hwtracing/stm/core.c:695 ... Which is basically a result of the stm class trying to allocate ~512kB for the dummy_stm with its default parameters. There's no reason, however, for it not to be vmalloc()ed instead, which is what this patch does. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> CC: stable@vger.kernel.org # v4.4+ Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

commit b5e2ced upstream. Fengguang is running into a warning from the buddy allocator: > swapper/0: page allocation failure: order:9, mode:0x14040c0(GFP_KERNEL|__GFP_COMP), nodemask=(null) > CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.17.0-rc1 #262 > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014 > Call Trace: ... > __kmalloc+0x14b/0x180: ____cache_alloc at mm/slab.c:3127 > stm_register_device+0xf3/0x5c0: stm_register_device at drivers/hwtracing/stm/core.c:695 ... Which is basically a result of the stm class trying to allocate ~512kB for the dummy_stm with its default parameters. There's no reason, however, for it not to be vmalloc()ed instead, which is what this patch does. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> CC: stable@vger.kernel.org # v4.4+ Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

commit b5e2ced upstream. Fengguang is running into a warning from the buddy allocator: > swapper/0: page allocation failure: order:9, mode:0x14040c0(GFP_KERNEL|__GFP_COMP), nodemask=(null) > CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.17.0-rc1 torvalds#262 > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014 > Call Trace: ... > __kmalloc+0x14b/0x180: ____cache_alloc at mm/slab.c:3127 > stm_register_device+0xf3/0x5c0: stm_register_device at drivers/hwtracing/stm/core.c:695 ... Which is basically a result of the stm class trying to allocate ~512kB for the dummy_stm with its default parameters. There's no reason, however, for it not to be vmalloc()ed instead, which is what this patch does. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> CC: stable@vger.kernel.org # v4.4+ Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

WARNING: please, no spaces at the start of a line torvalds#250: FILE: kernel/cgroup/cgroup.c:4554: + {$ ERROR: code indent should use tabs where possible torvalds#251: FILE: kernel/cgroup/cgroup.c:4555: + .name = "cpu.pressure",$ WARNING: please, no spaces at the start of a line torvalds#251: FILE: kernel/cgroup/cgroup.c:4555: + .name = "cpu.pressure",$ ERROR: code indent should use tabs where possible torvalds#252: FILE: kernel/cgroup/cgroup.c:4556: + .flags = CFTYPE_NOT_ON_ROOT,$ WARNING: please, no spaces at the start of a line torvalds#252: FILE: kernel/cgroup/cgroup.c:4556: + .flags = CFTYPE_NOT_ON_ROOT,$ ERROR: code indent should use tabs where possible torvalds#253: FILE: kernel/cgroup/cgroup.c:4557: + .seq_show = cgroup_cpu_pressure_show,$ WARNING: please, no spaces at the start of a line torvalds#253: FILE: kernel/cgroup/cgroup.c:4557: + .seq_show = cgroup_cpu_pressure_show,$ WARNING: please, no spaces at the start of a line torvalds#254: FILE: kernel/cgroup/cgroup.c:4558: + },$ WARNING: please, no spaces at the start of a line torvalds#255: FILE: kernel/cgroup/cgroup.c:4559: + {$ ERROR: code indent should use tabs where possible torvalds#256: FILE: kernel/cgroup/cgroup.c:4560: + .name = "memory.pressure",$ WARNING: please, no spaces at the start of a line torvalds#256: FILE: kernel/cgroup/cgroup.c:4560: + .name = "memory.pressure",$ ERROR: code indent should use tabs where possible torvalds#257: FILE: kernel/cgroup/cgroup.c:4561: + .flags = CFTYPE_NOT_ON_ROOT,$ WARNING: please, no spaces at the start of a line torvalds#257: FILE: kernel/cgroup/cgroup.c:4561: + .flags = CFTYPE_NOT_ON_ROOT,$ ERROR: code indent should use tabs where possible torvalds#258: FILE: kernel/cgroup/cgroup.c:4562: + .seq_show = cgroup_memory_pressure_show,$ WARNING: please, no spaces at the start of a line torvalds#258: FILE: kernel/cgroup/cgroup.c:4562: + .seq_show = cgroup_memory_pressure_show,$ WARNING: please, no spaces at the start of a line torvalds#259: FILE: kernel/cgroup/cgroup.c:4563: + },$ WARNING: please, no spaces at the start of a line torvalds#260: FILE: kernel/cgroup/cgroup.c:4564: + {$ ERROR: code indent should use tabs where possible torvalds#261: FILE: kernel/cgroup/cgroup.c:4565: + .name = "io.pressure",$ WARNING: please, no spaces at the start of a line torvalds#261: FILE: kernel/cgroup/cgroup.c:4565: + .name = "io.pressure",$ ERROR: code indent should use tabs where possible torvalds#262: FILE: kernel/cgroup/cgroup.c:4566: + .flags = CFTYPE_NOT_ON_ROOT,$ WARNING: please, no spaces at the start of a line torvalds#262: FILE: kernel/cgroup/cgroup.c:4566: + .flags = CFTYPE_NOT_ON_ROOT,$ ERROR: code indent should use tabs where possible torvalds#263: FILE: kernel/cgroup/cgroup.c:4567: + .seq_show = cgroup_io_pressure_show,$ WARNING: please, no spaces at the start of a line torvalds#263: FILE: kernel/cgroup/cgroup.c:4567: + .seq_show = cgroup_io_pressure_show,$ WARNING: please, no spaces at the start of a line torvalds#264: FILE: kernel/cgroup/cgroup.c:4568: + },$ WARNING: please, no spaces at the start of a line torvalds#322: FILE: kernel/sched/psi.c:424: + cgroup = task->cgroups->dfl_cgrp;$ WARNING: please, no spaces at the start of a line torvalds#323: FILE: kernel/sched/psi.c:425: + while (cgroup && (parent = cgroup_parent(cgroup))) {$ WARNING: suspect code indent for conditional statements (7, 15) torvalds#323: FILE: kernel/sched/psi.c:425: + while (cgroup && (parent = cgroup_parent(cgroup))) { + struct psi_group *group; ERROR: code indent should use tabs where possible torvalds#324: FILE: kernel/sched/psi.c:426: + struct psi_group *group;$ WARNING: please, no spaces at the start of a line torvalds#324: FILE: kernel/sched/psi.c:426: + struct psi_group *group;$ ERROR: code indent should use tabs where possible torvalds#326: FILE: kernel/sched/psi.c:428: + group = cgroup_psi(cgroup);$ WARNING: please, no spaces at the start of a line torvalds#326: FILE: kernel/sched/psi.c:428: + group = cgroup_psi(cgroup);$ ERROR: code indent should use tabs where possible torvalds#327: FILE: kernel/sched/psi.c:429: + psi_group_change(group, cpu, now, clear, set);$ WARNING: please, no spaces at the start of a line torvalds#327: FILE: kernel/sched/psi.c:429: + psi_group_change(group, cpu, now, clear, set);$ ERROR: code indent should use tabs where possible torvalds#329: FILE: kernel/sched/psi.c:431: + cgroup = parent;$ WARNING: please, no spaces at the start of a line torvalds#329: FILE: kernel/sched/psi.c:431: + cgroup = parent;$ WARNING: please, no spaces at the start of a line torvalds#330: FILE: kernel/sched/psi.c:432: + }$ WARNING: braces {} are not necessary for any arm of this statement torvalds#378: FILE: kernel/sched/psi.c:537: + if (task_on_rq_queued(task)) { [...] + } else if (task->in_iowait) { [...] total: 13 errors, 24 warnings, 334 lines checked NOTE: For some of the reported defects, checkpatch may be able to mechanically convert to the typical style using --fix or --fix-inplace. NOTE: Whitespace errors detected. You may wish to use scripts/cleanpatch or scripts/cleanfile ./patches/psi-cgroup-support.patch has style problems, please review. NOTE: If any of the errors are false positives, please report them to the maintainer, see CHECKPATCH in MAINTAINERS. Please run checkpatch prior to sending patches Cc: Johannes Weiner <jweiner@fb.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

After enabling CONFIG_DMA_API_DEBUG there was a warning about using dma_unmap_single() in wrong direction from ath11k_dp_rx_process_mon_status(). [ 140.279477] ------------[ cut here ]------------ [ 140.279908] DMA-API: ath11k_pci 0000:06:00.0: device driver syncs DMA memory with different direction [device address=0x00000000fac08a40] [size=2176 bytes] [mapped with DMA_FROM_DEVICE] [s [ 140.279925] WARNING: CPU: 7 PID: 97 at kernel/dma/debug.c:1120 check_sync+0x494/0x730 [ 140.279939] Modules linked in: ath11k_pci ath11k mac80211 libarc4 cfg80211 qmi_helpers qrtr_mhi mhi qrtr ns nvme nvme_core [ 140.279958] CPU: 7 PID: 97 Comm: kworker/u16:1 Not tainted 5.10.0-rc4+ torvalds#262 [ 140.279968] Hardware name: Intel(R) Client Systems NUC8i7HVK/NUC8i7HVB, BIOS HNKBLi70.86A.0049.2018.0801.1601 08/01/2018 [ 140.279995] Workqueue: phy0 ieee80211_scan_work [mac80211] [ 140.280009] RIP: 0010:check_sync+0x494/0x730 [ 140.280022] Code: 8b 4c 24 10 4c 8b 44 24 18 4c 8b 54 24 20 48 89 c6 4c 89 54 24 10 4c 89 f9 4c 89 ea 48 c7 c7 40 b9 74 9c 41 56 e8 2f a0 ab 00 <0f> 0b 48 89 ef e8 e5 17 ac 00 41 58 4c 8b [ 140.280033] RSP: 0018:ffff9f588024cbd8 EFLAGS: 00010086 [ 140.280046] RAX: 0000000000000000 RBX: ffff9f588024cc40 RCX: ffff8eed18dd9f98 [ 140.280057] RDX: 00000000ffffffd8 RSI: 0000000000000027 RDI: ffff8eed18dd9f90 [ 140.280067] RBP: ffff8eebc1407800 R08: 00000000ffffffea R09: 0000000000000000 [ 140.280082] R10: 0000000000000003 R11: 3fffffffffffffff R12: ffffffff9e081060 [ 140.280093] R13: ffff8eebc43908b0 R14: ffffffff9c74c104 R15: 00000000fac08a40 [ 140.280104] FS: 0000000000000000(0000) GS:ffff8eed18c00000(0000) knlGS:0000000000000000 [ 140.280115] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 140.280127] CR2: 00007f6feafb12a0 CR3: 00000001604ca001 CR4: 00000000003706e0 [ 140.280138] Call Trace: [ 140.280149] <IRQ> [ 140.280161] debug_dma_sync_single_for_cpu+0x79/0x80 [ 140.280173] ? mark_held_locks+0x50/0x80 [ 140.280185] ? lockdep_hardirqs_on_prepare.part.0+0x65/0x130 [ 140.280197] ? __local_bh_enable_ip+0x6f/0xb0 [ 140.280215] ? ath11k_dp_rx_reap_mon_status_ring+0x202/0x340 [ath11k] [ 140.280231] ath11k_dp_rx_reap_mon_status_ring+0x22c/0x340 [ath11k] [ 140.280249] ? ath11k_dp_rx_process_mon_rings+0x1a0/0x1a0 [ath11k] [ 140.280265] ath11k_dp_rx_process_mon_status+0x83/0x3c0 [ath11k] [ 140.280278] ? __lock_acquire+0x3bd/0x6d0 [ 140.280296] ? ath11k_dp_rx_process_mon_rings+0x1a0/0x1a0 [ath11k] [ 140.280311] ? ath11k_dp_rx_process_mon_rings+0x1a0/0x1a0 [ath11k] [ 140.280326] ? ath11k_hw_mac_id_to_srng_id_qca6390+0x10/0x10 [ath11k] [ 140.280341] ? ath11k_dp_rx_process_mon_rings+0x4a/0x1a0 [ath11k] [ 140.280353] ? timer_fixup_init+0x30/0x30 [ 140.280367] ? ath11k_dp_rx_process_mon_rings+0x1a0/0x1a0 [ath11k] [ 140.280385] ath11k_dp_service_mon_ring+0x2b/0x50 [ath11k] [ 140.280400] ? ath11k_dp_rx_process_mon_rings+0x1a0/0x1a0 [ath11k] [ 140.280413] call_timer_fn+0xb1/0x2d0 [ 140.280426] __run_timers.part.0+0x205/0x2f0 [ 140.280439] run_timer_softirq+0x21/0x50 [ 140.280450] __do_softirq+0xc2/0x454 [ 140.280463] asm_call_irq_on_stack+0x12/0x20 [ 140.280476] </IRQ> [ 140.280488] do_softirq_own_stack+0x56/0x60 [ 140.280500] irq_exit_rcu+0x9a/0xd0 [ 140.280511] sysvec_apic_timer_interrupt+0x43/0xa0 [ 140.280526] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 140.280540] RIP: 0010:_raw_spin_unlock_irqrestore+0x25/0x40 [ 140.280551] Code: 80 00 00 00 00 55 48 89 fd 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 ca 8f 4b ff 48 89 ef e8 22 dc 4b ff f6 c7 02 75 0c 53 9d <65> ff 0d 04 51 20 64 5b 5d c3 e8 9c 08 56 [ 140.280563] RSP: 0018:ffff9f58802e7878 EFLAGS: 00000246 [ 140.280578] RAX: 00000000000435ef RBX: 0000000000000246 RCX: 0000000000000040 [ 140.280592] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9be13e84 [ 140.280603] RBP: ffff8eed18dde480 R08: 0000000000000001 R09: ffff8eebc2292760 [ 140.280614] R10: 0000000000000005 R11: ffff8eebc2292760 R12: 0000000000000000 [ 140.280625] R13: ffff9f58802e7900 R14: ffff8eed18dde480 R15: ffff8eed18dde480 [ 140.280637] ? _raw_spin_unlock_irqrestore+0x34/0x40 [ 140.280649] __mod_timer+0x274/0x400 [ 140.280661] ? wait_for_completion_timeout+0x76/0x110 [ 140.280675] schedule_timeout+0xa8/0x140 [ 140.280687] ? __next_timer_interrupt+0x100/0x100 [ 140.280698] wait_for_completion_timeout+0xa2/0x110 [ 140.280714] ath11k_start_scan+0x4c/0xf0 [ath11k] [ 140.280730] ath11k_mac_op_hw_scan+0x1e9/0x2c0 [ath11k] [ 140.280763] drv_hw_scan+0x79/0x260 [mac80211] [ 140.280789] __ieee80211_scan_completed+0x379/0x440 [mac80211] [ 140.280816] ieee80211_scan_work+0x12f/0x330 [mac80211] [ 140.280830] process_one_work+0x279/0x5b0 [ 140.280842] worker_thread+0x49/0x300 [ 140.280854] ? process_one_work+0x5b0/0x5b0 [ 140.280868] kthread+0x135/0x150 [ 140.280880] ? __kthread_bind_mask+0x60/0x60 [ 140.280891] ret_from_fork+0x22/0x30 [ 140.280903] irq event stamp: 275961 [ 140.280918] hardirqs last enabled at (275960): [<ffffffff9b270f1f>] __local_bh_enable_ip+0x6f/0xb0 [ 140.280931] hardirqs last disabled at (275961): [<ffffffff9be13ca3>] _raw_spin_lock_irqsave+0x63/0x80 [ 140.280946] softirqs last enabled at (275944): [<ffffffffc055288d>] ath11k_ce_send+0x14d/0x260 [ath11k] [ 140.280958] softirqs last disabled at (275953): [<ffffffff9c000f72>] asm_call_irq_on_stack+0x12/0x20 [ 140.280971] ---[ end trace 31cb94e18d401398 ]--- Tested-on: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-01740-QCAHSTSWPLZ_V2_TO_X86-1 Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

After enabling CONFIG_DMA_API_DEBUG there was a warning about using dma_unmap_single() in wrong direction from ath11k_dp_rx_process_mon_status(). [ 140.279477] ------------[ cut here ]------------ [ 140.279908] DMA-API: ath11k_pci 0000:06:00.0: device driver syncs DMA memory with different direction [device address=0x00000000fac08a40] [size=2176 bytes] [mapped with DMA_FROM_DEVICE] [s [ 140.279925] WARNING: CPU: 7 PID: 97 at kernel/dma/debug.c:1120 check_sync+0x494/0x730 [ 140.279939] Modules linked in: ath11k_pci ath11k mac80211 libarc4 cfg80211 qmi_helpers qrtr_mhi mhi qrtr ns nvme nvme_core [ 140.279958] CPU: 7 PID: 97 Comm: kworker/u16:1 Not tainted 5.10.0-rc4+ torvalds#262 [ 140.279968] Hardware name: Intel(R) Client Systems NUC8i7HVK/NUC8i7HVB, BIOS HNKBLi70.86A.0049.2018.0801.1601 08/01/2018 [ 140.279995] Workqueue: phy0 ieee80211_scan_work [mac80211] [ 140.280009] RIP: 0010:check_sync+0x494/0x730 [ 140.280022] Code: 8b 4c 24 10 4c 8b 44 24 18 4c 8b 54 24 20 48 89 c6 4c 89 54 24 10 4c 89 f9 4c 89 ea 48 c7 c7 40 b9 74 9c 41 56 e8 2f a0 ab 00 <0f> 0b 48 89 ef e8 e5 17 ac 00 41 58 4c 8b [ 140.280033] RSP: 0018:ffff9f588024cbd8 EFLAGS: 00010086 [ 140.280046] RAX: 0000000000000000 RBX: ffff9f588024cc40 RCX: ffff8eed18dd9f98 [ 140.280057] RDX: 00000000ffffffd8 RSI: 0000000000000027 RDI: ffff8eed18dd9f90 [ 140.280067] RBP: ffff8eebc1407800 R08: 00000000ffffffea R09: 0000000000000000 [ 140.280082] R10: 0000000000000003 R11: 3fffffffffffffff R12: ffffffff9e081060 [ 140.280093] R13: ffff8eebc43908b0 R14: ffffffff9c74c104 R15: 00000000fac08a40 [ 140.280104] FS: 0000000000000000(0000) GS:ffff8eed18c00000(0000) knlGS:0000000000000000 [ 140.280115] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 140.280127] CR2: 00007f6feafb12a0 CR3: 00000001604ca001 CR4: 00000000003706e0 [ 140.280138] Call Trace: [ 140.280149] <IRQ> [ 140.280161] debug_dma_sync_single_for_cpu+0x79/0x80 [ 140.280173] ? mark_held_locks+0x50/0x80 [ 140.280185] ? lockdep_hardirqs_on_prepare.part.0+0x65/0x130 [ 140.280197] ? __local_bh_enable_ip+0x6f/0xb0 [ 140.280215] ? ath11k_dp_rx_reap_mon_status_ring+0x202/0x340 [ath11k] [ 140.280231] ath11k_dp_rx_reap_mon_status_ring+0x22c/0x340 [ath11k] [ 140.280249] ? ath11k_dp_rx_process_mon_rings+0x1a0/0x1a0 [ath11k] [ 140.280265] ath11k_dp_rx_process_mon_status+0x83/0x3c0 [ath11k] [ 140.280278] ? __lock_acquire+0x3bd/0x6d0 [ 140.280296] ? ath11k_dp_rx_process_mon_rings+0x1a0/0x1a0 [ath11k] [ 140.280311] ? ath11k_dp_rx_process_mon_rings+0x1a0/0x1a0 [ath11k] [ 140.280326] ? ath11k_hw_mac_id_to_srng_id_qca6390+0x10/0x10 [ath11k] [ 140.280341] ? ath11k_dp_rx_process_mon_rings+0x4a/0x1a0 [ath11k] [ 140.280353] ? timer_fixup_init+0x30/0x30 [ 140.280367] ? ath11k_dp_rx_process_mon_rings+0x1a0/0x1a0 [ath11k] [ 140.280385] ath11k_dp_service_mon_ring+0x2b/0x50 [ath11k] [ 140.280400] ? ath11k_dp_rx_process_mon_rings+0x1a0/0x1a0 [ath11k] [ 140.280413] call_timer_fn+0xb1/0x2d0 [ 140.280426] __run_timers.part.0+0x205/0x2f0 [ 140.280439] run_timer_softirq+0x21/0x50 [ 140.280450] __do_softirq+0xc2/0x454 [ 140.280463] asm_call_irq_on_stack+0x12/0x20 [ 140.280476] </IRQ> [ 140.280488] do_softirq_own_stack+0x56/0x60 [ 140.280500] irq_exit_rcu+0x9a/0xd0 [ 140.280511] sysvec_apic_timer_interrupt+0x43/0xa0 [ 140.280526] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 140.280540] RIP: 0010:_raw_spin_unlock_irqrestore+0x25/0x40 [ 140.280551] Code: 80 00 00 00 00 55 48 89 fd 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 ca 8f 4b ff 48 89 ef e8 22 dc 4b ff f6 c7 02 75 0c 53 9d <65> ff 0d 04 51 20 64 5b 5d c3 e8 9c 08 56 [ 140.280563] RSP: 0018:ffff9f58802e7878 EFLAGS: 00000246 [ 140.280578] RAX: 00000000000435ef RBX: 0000000000000246 RCX: 0000000000000040 [ 140.280592] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9be13e84 [ 140.280603] RBP: ffff8eed18dde480 R08: 0000000000000001 R09: ffff8eebc2292760 [ 140.280614] R10: 0000000000000005 R11: ffff8eebc2292760 R12: 0000000000000000 [ 140.280625] R13: ffff9f58802e7900 R14: ffff8eed18dde480 R15: ffff8eed18dde480 [ 140.280637] ? _raw_spin_unlock_irqrestore+0x34/0x40 [ 140.280649] __mod_timer+0x274/0x400 [ 140.280661] ? wait_for_completion_timeout+0x76/0x110 [ 140.280675] schedule_timeout+0xa8/0x140 [ 140.280687] ? __next_timer_interrupt+0x100/0x100 [ 140.280698] wait_for_completion_timeout+0xa2/0x110 [ 140.280714] ath11k_start_scan+0x4c/0xf0 [ath11k] [ 140.280730] ath11k_mac_op_hw_scan+0x1e9/0x2c0 [ath11k] [ 140.280763] drv_hw_scan+0x79/0x260 [mac80211] [ 140.280789] __ieee80211_scan_completed+0x379/0x440 [mac80211] [ 140.280816] ieee80211_scan_work+0x12f/0x330 [mac80211] [ 140.280830] process_one_work+0x279/0x5b0 [ 140.280842] worker_thread+0x49/0x300 [ 140.280854] ? process_one_work+0x5b0/0x5b0 [ 140.280868] kthread+0x135/0x150 [ 140.280880] ? __kthread_bind_mask+0x60/0x60 [ 140.280891] ret_from_fork+0x22/0x30 [ 140.280903] irq event stamp: 275961 [ 140.280918] hardirqs last enabled at (275960): [<ffffffff9b270f1f>] __local_bh_enable_ip+0x6f/0xb0 [ 140.280931] hardirqs last disabled at (275961): [<ffffffff9be13ca3>] _raw_spin_lock_irqsave+0x63/0x80 [ 140.280946] softirqs last enabled at (275944): [<ffffffffc055288d>] ath11k_ce_send+0x14d/0x260 [ath11k] [ 140.280958] softirqs last disabled at (275953): [<ffffffff9c000f72>] asm_call_irq_on_stack+0x12/0x20 [ 140.280971] ---[ end trace 31cb94e18d401398 ]--- Tested-on: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-01740-QCAHSTSWPLZ_V2_TO_X86-1 Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Link: https://lore.kernel.org/r/1606156046-24764-1-git-send-email-kvalo@codeaurora.org

After enabling CONFIG_DMA_API_DEBUG there was a warning about using dma_unmap_single() in wrong direction from ath11k_dp_rx_process_mon_status(). [ 140.279477] ------------[ cut here ]------------ [ 140.279908] DMA-API: ath11k_pci 0000:06:00.0: device driver syncs DMA memory with different direction [device address=0x00000000fac08a40] [size=2176 bytes] [mapped with DMA_FROM_DEVICE] [s [ 140.279925] WARNING: CPU: 7 PID: 97 at kernel/dma/debug.c:1120 check_sync+0x494/0x730 [ 140.279939] Modules linked in: ath11k_pci ath11k mac80211 libarc4 cfg80211 qmi_helpers qrtr_mhi mhi qrtr ns nvme nvme_core [ 140.279958] CPU: 7 PID: 97 Comm: kworker/u16:1 Not tainted 5.10.0-rc4+ torvalds#262 [ 140.279968] Hardware name: Intel(R) Client Systems NUC8i7HVK/NUC8i7HVB, BIOS HNKBLi70.86A.0049.2018.0801.1601 08/01/2018 [ 140.279995] Workqueue: phy0 ieee80211_scan_work [mac80211] [ 140.280009] RIP: 0010:check_sync+0x494/0x730 [ 140.280022] Code: 8b 4c 24 10 4c 8b 44 24 18 4c 8b 54 24 20 48 89 c6 4c 89 54 24 10 4c 89 f9 4c 89 ea 48 c7 c7 40 b9 74 9c 41 56 e8 2f a0 ab 00 <0f> 0b 48 89 ef e8 e5 17 ac 00 41 58 4c 8b [ 140.280033] RSP: 0018:ffff9f588024cbd8 EFLAGS: 00010086 [ 140.280046] RAX: 0000000000000000 RBX: ffff9f588024cc40 RCX: ffff8eed18dd9f98 [ 140.280057] RDX: 00000000ffffffd8 RSI: 0000000000000027 RDI: ffff8eed18dd9f90 [ 140.280067] RBP: ffff8eebc1407800 R08: 00000000ffffffea R09: 0000000000000000 [ 140.280082] R10: 0000000000000003 R11: 3fffffffffffffff R12: ffffffff9e081060 [ 140.280093] R13: ffff8eebc43908b0 R14: ffffffff9c74c104 R15: 00000000fac08a40 [ 140.280104] FS: 0000000000000000(0000) GS:ffff8eed18c00000(0000) knlGS:0000000000000000 [ 140.280115] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 140.280127] CR2: 00007f6feafb12a0 CR3: 00000001604ca001 CR4: 00000000003706e0 [ 140.280138] Call Trace: [ 140.280149] <IRQ> [ 140.280161] debug_dma_sync_single_for_cpu+0x79/0x80 [ 140.280173] ? mark_held_locks+0x50/0x80 [ 140.280185] ? lockdep_hardirqs_on_prepare.part.0+0x65/0x130 [ 140.280197] ? __local_bh_enable_ip+0x6f/0xb0 [ 140.280215] ? ath11k_dp_rx_reap_mon_status_ring+0x202/0x340 [ath11k] [ 140.280231] ath11k_dp_rx_reap_mon_status_ring+0x22c/0x340 [ath11k] [ 140.280249] ? ath11k_dp_rx_process_mon_rings+0x1a0/0x1a0 [ath11k] [ 140.280265] ath11k_dp_rx_process_mon_status+0x83/0x3c0 [ath11k] [ 140.280278] ? __lock_acquire+0x3bd/0x6d0 [ 140.280296] ? ath11k_dp_rx_process_mon_rings+0x1a0/0x1a0 [ath11k] [ 140.280311] ? ath11k_dp_rx_process_mon_rings+0x1a0/0x1a0 [ath11k] [ 140.280326] ? ath11k_hw_mac_id_to_srng_id_qca6390+0x10/0x10 [ath11k] [ 140.280341] ? ath11k_dp_rx_process_mon_rings+0x4a/0x1a0 [ath11k] [ 140.280353] ? timer_fixup_init+0x30/0x30 [ 140.280367] ? ath11k_dp_rx_process_mon_rings+0x1a0/0x1a0 [ath11k] [ 140.280385] ath11k_dp_service_mon_ring+0x2b/0x50 [ath11k] [ 140.280400] ? ath11k_dp_rx_process_mon_rings+0x1a0/0x1a0 [ath11k] [ 140.280413] call_timer_fn+0xb1/0x2d0 [ 140.280426] __run_timers.part.0+0x205/0x2f0 [ 140.280439] run_timer_softirq+0x21/0x50 [ 140.280450] __do_softirq+0xc2/0x454 [ 140.280463] asm_call_irq_on_stack+0x12/0x20 [ 140.280476] </IRQ> [ 140.280488] do_softirq_own_stack+0x56/0x60 [ 140.280500] irq_exit_rcu+0x9a/0xd0 [ 140.280511] sysvec_apic_timer_interrupt+0x43/0xa0 [ 140.280526] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 140.280540] RIP: 0010:_raw_spin_unlock_irqrestore+0x25/0x40 [ 140.280551] Code: 80 00 00 00 00 55 48 89 fd 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 ca 8f 4b ff 48 89 ef e8 22 dc 4b ff f6 c7 02 75 0c 53 9d <65> ff 0d 04 51 20 64 5b 5d c3 e8 9c 08 56 [ 140.280563] RSP: 0018:ffff9f58802e7878 EFLAGS: 00000246 [ 140.280578] RAX: 00000000000435ef RBX: 0000000000000246 RCX: 0000000000000040 [ 140.280592] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9be13e84 [ 140.280603] RBP: ffff8eed18dde480 R08: 0000000000000001 R09: ffff8eebc2292760 [ 140.280614] R10: 0000000000000005 R11: ffff8eebc2292760 R12: 0000000000000000 [ 140.280625] R13: ffff9f58802e7900 R14: ffff8eed18dde480 R15: ffff8eed18dde480 [ 140.280637] ? _raw_spin_unlock_irqrestore+0x34/0x40 [ 140.280649] __mod_timer+0x274/0x400 [ 140.280661] ? wait_for_completion_timeout+0x76/0x110 [ 140.280675] schedule_timeout+0xa8/0x140 [ 140.280687] ? __next_timer_interrupt+0x100/0x100 [ 140.280698] wait_for_completion_timeout+0xa2/0x110 [ 140.280714] ath11k_start_scan+0x4c/0xf0 [ath11k] [ 140.280730] ath11k_mac_op_hw_scan+0x1e9/0x2c0 [ath11k] [ 140.280763] drv_hw_scan+0x79/0x260 [mac80211] [ 140.280789] __ieee80211_scan_completed+0x379/0x440 [mac80211] [ 140.280816] ieee80211_scan_work+0x12f/0x330 [mac80211] [ 140.280830] process_one_work+0x279/0x5b0 [ 140.280842] worker_thread+0x49/0x300 [ 140.280854] ? process_one_work+0x5b0/0x5b0 [ 140.280868] kthread+0x135/0x150 [ 140.280880] ? __kthread_bind_mask+0x60/0x60 [ 140.280891] ret_from_fork+0x22/0x30 [ 140.280903] irq event stamp: 275961 [ 140.280918] hardirqs last enabled at (275960): [<ffffffff9b270f1f>] __local_bh_enable_ip+0x6f/0xb0 [ 140.280931] hardirqs last disabled at (275961): [<ffffffff9be13ca3>] _raw_spin_lock_irqsave+0x63/0x80 [ 140.280946] softirqs last enabled at (275944): [<ffffffffc055288d>] ath11k_ce_send+0x14d/0x260 [ath11k] [ 140.280958] softirqs last disabled at (275953): [<ffffffff9c000f72>] asm_call_irq_on_stack+0x12/0x20 [ 140.280971] ---[ end trace 31cb94e18d401398 ]--- Tested-on: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-01740-QCAHSTSWPLZ_V2_TO_X86-1 Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

Otherwise it fails to probe indicated by [ 30.524888] imx-dcss 32e00000.display-controller: No interconnect support may cause display underflows! Closes: torvalds#262 Signed-off-by: Guido Günther <agx@sigxcpu.org>

This commit fixes the following checkpatch.pl errors: ERROR:POINTER_LOCATION: "foo * bar" should be "foo *bar" torvalds#12: FILE: ./hal/HalHWImg8723B_RF.c:12: + struct DM_ODM_T * pDM_Odm, const u32 Condition1, const u32 Condition2 ERROR:POINTER_LOCATION: "foo * bar" should be "foo *bar" torvalds#124: FILE: ./hal/HalHWImg8723B_RF.c:124: + struct DM_ODM_T * pDM_Odm, const u32 Condition1, const u32 Condition2 ERROR:POINTER_LOCATION: "foo * bar" should be "foo *bar" torvalds#262: FILE: ./hal/HalHWImg8723B_RF.c:262: +void ODM_ReadAndConfig_MP_8723B_RadioA(struct DM_ODM_T * pDM_Odm) ERROR:POINTER_LOCATION: "foo * bar" should be "foo *bar" torvalds#423: FILE: ./hal/HalHWImg8723B_RF.c:423: +void ODM_ReadAndConfig_MP_8723B_TxPowerTrack_SDIO(struct DM_ODM_T * pDM_Odm) ERROR:POINTER_LOCATION: "foo * bar" should be "foo *bar" torvalds#425: FILE: ./hal/HalHWImg8723B_RF.c:425: + struct ODM_RF_CAL_T * pRFCalibrateInfo = &(pDM_Odm->RFCalibrateInfo); ERROR:POINTER_LOCATION: "foo * bar" should be "foo *bar" torvalds#758: FILE: ./hal/HalHWImg8723B_RF.c:758: +void ODM_ReadAndConfig_MP_8723B_TXPWR_LMT(struct DM_ODM_T * pDM_Odm) Signed-off-by: Marco Cesati <marcocesati@gmail.com>

This commit fixes the following checkpatch.pl errors: ERROR:POINTER_LOCATION: "foo * bar" should be "foo *bar" torvalds#12: FILE: ./hal/HalHWImg8723B_RF.c:12: + struct DM_ODM_T * pDM_Odm, const u32 Condition1, const u32 Condition2 ERROR:POINTER_LOCATION: "foo * bar" should be "foo *bar" torvalds#124: FILE: ./hal/HalHWImg8723B_RF.c:124: + struct DM_ODM_T * pDM_Odm, const u32 Condition1, const u32 Condition2 ERROR:POINTER_LOCATION: "foo * bar" should be "foo *bar" torvalds#262: FILE: ./hal/HalHWImg8723B_RF.c:262: +void ODM_ReadAndConfig_MP_8723B_RadioA(struct DM_ODM_T * pDM_Odm) ERROR:POINTER_LOCATION: "foo * bar" should be "foo *bar" torvalds#423: FILE: ./hal/HalHWImg8723B_RF.c:423: +void ODM_ReadAndConfig_MP_8723B_TxPowerTrack_SDIO(struct DM_ODM_T * pDM_Odm) ERROR:POINTER_LOCATION: "foo * bar" should be "foo *bar" torvalds#425: FILE: ./hal/HalHWImg8723B_RF.c:425: + struct ODM_RF_CAL_T * pRFCalibrateInfo = &(pDM_Odm->RFCalibrateInfo); ERROR:POINTER_LOCATION: "foo * bar" should be "foo *bar" torvalds#758: FILE: ./hal/HalHWImg8723B_RF.c:758: +void ODM_ReadAndConfig_MP_8723B_TXPWR_LMT(struct DM_ODM_T * pDM_Odm) Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Marco Cesati <marcocesati@gmail.com> Link: https://lore.kernel.org/r/20210315170618.2566-12-marcocesati@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Otherwise it fails to probe indicated by [ 30.524888] imx-dcss 32e00000.display-controller: No interconnect support may cause display underflows! Closes: torvalds#262 Signed-off-by: Guido Günther <agx@sigxcpu.org>

WARNING: please, no spaces at the start of a line torvalds#249: FILE: mm/page-writeback.c:2089: + {$ ERROR: code indent should use tabs where possible torvalds#250: FILE: mm/page-writeback.c:2090: + .procname = "dirty_background_ratio",$ WARNING: please, no spaces at the start of a line torvalds#250: FILE: mm/page-writeback.c:2090: + .procname = "dirty_background_ratio",$ ERROR: code indent should use tabs where possible torvalds#251: FILE: mm/page-writeback.c:2091: + .data = &dirty_background_ratio,$ WARNING: please, no spaces at the start of a line torvalds#251: FILE: mm/page-writeback.c:2091: + .data = &dirty_background_ratio,$ ERROR: code indent should use tabs where possible torvalds#252: FILE: mm/page-writeback.c:2092: + .maxlen = sizeof(dirty_background_ratio),$ WARNING: please, no spaces at the start of a line torvalds#252: FILE: mm/page-writeback.c:2092: + .maxlen = sizeof(dirty_background_ratio),$ ERROR: code indent should use tabs where possible torvalds#253: FILE: mm/page-writeback.c:2093: + .mode = 0644,$ WARNING: please, no spaces at the start of a line torvalds#253: FILE: mm/page-writeback.c:2093: + .mode = 0644,$ ERROR: code indent should use tabs where possible torvalds#254: FILE: mm/page-writeback.c:2094: + .proc_handler = dirty_background_ratio_handler,$ WARNING: please, no spaces at the start of a line torvalds#254: FILE: mm/page-writeback.c:2094: + .proc_handler = dirty_background_ratio_handler,$ ERROR: code indent should use tabs where possible torvalds#255: FILE: mm/page-writeback.c:2095: + .extra1 = SYSCTL_ZERO,$ WARNING: please, no spaces at the start of a line torvalds#255: FILE: mm/page-writeback.c:2095: + .extra1 = SYSCTL_ZERO,$ ERROR: code indent should use tabs where possible torvalds#256: FILE: mm/page-writeback.c:2096: + .extra2 = SYSCTL_ONE_HUNDRED,$ WARNING: please, no spaces at the start of a line torvalds#256: FILE: mm/page-writeback.c:2096: + .extra2 = SYSCTL_ONE_HUNDRED,$ WARNING: please, no spaces at the start of a line torvalds#257: FILE: mm/page-writeback.c:2097: + },$ WARNING: please, no spaces at the start of a line torvalds#258: FILE: mm/page-writeback.c:2098: + {$ ERROR: code indent should use tabs where possible torvalds#259: FILE: mm/page-writeback.c:2099: + .procname = "dirty_background_bytes",$ WARNING: please, no spaces at the start of a line torvalds#259: FILE: mm/page-writeback.c:2099: + .procname = "dirty_background_bytes",$ ERROR: code indent should use tabs where possible torvalds#260: FILE: mm/page-writeback.c:2100: + .data = &dirty_background_bytes,$ WARNING: please, no spaces at the start of a line torvalds#260: FILE: mm/page-writeback.c:2100: + .data = &dirty_background_bytes,$ ERROR: code indent should use tabs where possible torvalds#261: FILE: mm/page-writeback.c:2101: + .maxlen = sizeof(dirty_background_bytes),$ WARNING: please, no spaces at the start of a line torvalds#261: FILE: mm/page-writeback.c:2101: + .maxlen = sizeof(dirty_background_bytes),$ ERROR: code indent should use tabs where possible torvalds#262: FILE: mm/page-writeback.c:2102: + .mode = 0644,$ WARNING: please, no spaces at the start of a line torvalds#262: FILE: mm/page-writeback.c:2102: + .mode = 0644,$ ERROR: code indent should use tabs where possible torvalds#263: FILE: mm/page-writeback.c:2103: + .proc_handler = dirty_background_bytes_handler,$ WARNING: please, no spaces at the start of a line torvalds#263: FILE: mm/page-writeback.c:2103: + .proc_handler = dirty_background_bytes_handler,$ ERROR: code indent should use tabs where possible torvalds#264: FILE: mm/page-writeback.c:2104: + .extra1 = SYSCTL_LONG_ONE,$ WARNING: please, no spaces at the start of a line torvalds#264: FILE: mm/page-writeback.c:2104: + .extra1 = SYSCTL_LONG_ONE,$ WARNING: please, no spaces at the start of a line torvalds#265: FILE: mm/page-writeback.c:2105: + },$ WARNING: please, no spaces at the start of a line torvalds#266: FILE: mm/page-writeback.c:2106: + {$ ERROR: code indent should use tabs where possible torvalds#267: FILE: mm/page-writeback.c:2107: + .procname = "dirty_ratio",$ WARNING: please, no spaces at the start of a line torvalds#267: FILE: mm/page-writeback.c:2107: + .procname = "dirty_ratio",$ ERROR: code indent should use tabs where possible torvalds#268: FILE: mm/page-writeback.c:2108: + .data = &vm_dirty_ratio,$ WARNING: please, no spaces at the start of a line torvalds#268: FILE: mm/page-writeback.c:2108: + .data = &vm_dirty_ratio,$ ERROR: code indent should use tabs where possible torvalds#269: FILE: mm/page-writeback.c:2109: + .maxlen = sizeof(vm_dirty_ratio),$ WARNING: please, no spaces at the start of a line torvalds#269: FILE: mm/page-writeback.c:2109: + .maxlen = sizeof(vm_dirty_ratio),$ ERROR: code indent should use tabs where possible torvalds#270: FILE: mm/page-writeback.c:2110: + .mode = 0644,$ WARNING: please, no spaces at the start of a line torvalds#270: FILE: mm/page-writeback.c:2110: + .mode = 0644,$ ERROR: code indent should use tabs where possible torvalds#271: FILE: mm/page-writeback.c:2111: + .proc_handler = dirty_ratio_handler,$ WARNING: please, no spaces at the start of a line torvalds#271: FILE: mm/page-writeback.c:2111: + .proc_handler = dirty_ratio_handler,$ ERROR: code indent should use tabs where possible torvalds#272: FILE: mm/page-writeback.c:2112: + .extra1 = SYSCTL_ZERO,$ WARNING: please, no spaces at the start of a line torvalds#272: FILE: mm/page-writeback.c:2112: + .extra1 = SYSCTL_ZERO,$ ERROR: code indent should use tabs where possible torvalds#273: FILE: mm/page-writeback.c:2113: + .extra2 = SYSCTL_ONE_HUNDRED,$ WARNING: please, no spaces at the start of a line torvalds#273: FILE: mm/page-writeback.c:2113: + .extra2 = SYSCTL_ONE_HUNDRED,$ WARNING: please, no spaces at the start of a line torvalds#274: FILE: mm/page-writeback.c:2114: + },$ WARNING: please, no spaces at the start of a line torvalds#275: FILE: mm/page-writeback.c:2115: + {$ ERROR: code indent should use tabs where possible torvalds#276: FILE: mm/page-writeback.c:2116: + .procname = "dirty_bytes",$ WARNING: please, no spaces at the start of a line torvalds#276: FILE: mm/page-writeback.c:2116: + .procname = "dirty_bytes",$ ERROR: code indent should use tabs where possible torvalds#277: FILE: mm/page-writeback.c:2117: + .data = &vm_dirty_bytes,$ WARNING: please, no spaces at the start of a line torvalds#277: FILE: mm/page-writeback.c:2117: + .data = &vm_dirty_bytes,$ ERROR: code indent should use tabs where possible torvalds#278: FILE: mm/page-writeback.c:2118: + .maxlen = sizeof(vm_dirty_bytes),$ WARNING: please, no spaces at the start of a line torvalds#278: FILE: mm/page-writeback.c:2118: + .maxlen = sizeof(vm_dirty_bytes),$ ERROR: code indent should use tabs where possible torvalds#279: FILE: mm/page-writeback.c:2119: + .mode = 0644,$ WARNING: please, no spaces at the start of a line torvalds#279: FILE: mm/page-writeback.c:2119: + .mode = 0644,$ ERROR: code indent should use tabs where possible torvalds#280: FILE: mm/page-writeback.c:2120: + .proc_handler = dirty_bytes_handler,$ WARNING: please, no spaces at the start of a line torvalds#280: FILE: mm/page-writeback.c:2120: + .proc_handler = dirty_bytes_handler,$ ERROR: code indent should use tabs where possible torvalds#281: FILE: mm/page-writeback.c:2121: + .extra1 = (void *)&dirty_bytes_min,$ WARNING: please, no spaces at the start of a line torvalds#281: FILE: mm/page-writeback.c:2121: + .extra1 = (void *)&dirty_bytes_min,$ WARNING: please, no spaces at the start of a line torvalds#282: FILE: mm/page-writeback.c:2122: + },$ WARNING: please, no spaces at the start of a line torvalds#283: FILE: mm/page-writeback.c:2123: + {$ ERROR: code indent should use tabs where possible torvalds#284: FILE: mm/page-writeback.c:2124: + .procname = "dirty_writeback_centisecs",$ WARNING: please, no spaces at the start of a line torvalds#284: FILE: mm/page-writeback.c:2124: + .procname = "dirty_writeback_centisecs",$ ERROR: code indent should use tabs where possible torvalds#285: FILE: mm/page-writeback.c:2125: + .data = &dirty_writeback_interval,$ WARNING: please, no spaces at the start of a line torvalds#285: FILE: mm/page-writeback.c:2125: + .data = &dirty_writeback_interval,$ ERROR: code indent should use tabs where possible torvalds#286: FILE: mm/page-writeback.c:2126: + .maxlen = sizeof(dirty_writeback_interval),$ WARNING: please, no spaces at the start of a line torvalds#286: FILE: mm/page-writeback.c:2126: + .maxlen = sizeof(dirty_writeback_interval),$ ERROR: code indent should use tabs where possible torvalds#287: FILE: mm/page-writeback.c:2127: + .mode = 0644,$ WARNING: please, no spaces at the start of a line torvalds#287: FILE: mm/page-writeback.c:2127: + .mode = 0644,$ ERROR: code indent should use tabs where possible torvalds#288: FILE: mm/page-writeback.c:2128: + .proc_handler = dirty_writeback_centisecs_handler,$ WARNING: please, no spaces at the start of a line torvalds#288: FILE: mm/page-writeback.c:2128: + .proc_handler = dirty_writeback_centisecs_handler,$ WARNING: please, no spaces at the start of a line torvalds#289: FILE: mm/page-writeback.c:2129: + },$ WARNING: please, no spaces at the start of a line torvalds#290: FILE: mm/page-writeback.c:2130: + {$ ERROR: code indent should use tabs where possible torvalds#291: FILE: mm/page-writeback.c:2131: + .procname = "dirty_expire_centisecs",$ WARNING: please, no spaces at the start of a line torvalds#291: FILE: mm/page-writeback.c:2131: + .procname = "dirty_expire_centisecs",$ ERROR: code indent should use tabs where possible torvalds#292: FILE: mm/page-writeback.c:2132: + .data = &dirty_expire_interval,$ WARNING: please, no spaces at the start of a line torvalds#292: FILE: mm/page-writeback.c:2132: + .data = &dirty_expire_interval,$ ERROR: code indent should use tabs where possible torvalds#293: FILE: mm/page-writeback.c:2133: + .maxlen = sizeof(dirty_expire_interval),$ WARNING: please, no spaces at the start of a line torvalds#293: FILE: mm/page-writeback.c:2133: + .maxlen = sizeof(dirty_expire_interval),$ ERROR: code indent should use tabs where possible torvalds#294: FILE: mm/page-writeback.c:2134: + .mode = 0644,$ WARNING: please, no spaces at the start of a line torvalds#294: FILE: mm/page-writeback.c:2134: + .mode = 0644,$ ERROR: code indent should use tabs where possible torvalds#295: FILE: mm/page-writeback.c:2135: + .proc_handler = proc_dointvec_minmax,$ WARNING: please, no spaces at the start of a line torvalds#295: FILE: mm/page-writeback.c:2135: + .proc_handler = proc_dointvec_minmax,$ ERROR: code indent should use tabs where possible torvalds#296: FILE: mm/page-writeback.c:2136: + .extra1 = SYSCTL_ZERO,$ WARNING: please, no spaces at the start of a line torvalds#296: FILE: mm/page-writeback.c:2136: + .extra1 = SYSCTL_ZERO,$ WARNING: please, no spaces at the start of a line torvalds#297: FILE: mm/page-writeback.c:2137: + },$ total: 37 errors, 49 warnings, 287 lines checked NOTE: For some of the reported defects, checkpatch may be able to mechanically convert to the typical style using --fix or --fix-inplace. NOTE: Whitespace errors detected. You may wish to use scripts/cleanpatch or scripts/cleanfile ./patches/mm-move-page-writeback-sysctls-to-is-own-file.patch has style problems, please review. NOTE: If any of the errors are false positives, please report them to the maintainer, see CHECKPATCH in MAINTAINERS. Please run checkpatch prior to sending patches Cc: Iurii Zaikin <yzaikin@google.com> Cc: Kees Cook <keescook@chromium.org> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: zhanglianjie <zhanglianjie@uniontech.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

WARNING: please, no spaces at the start of a line torvalds#249: FILE: mm/page-writeback.c:2089: + {$ ERROR: code indent should use tabs where possible torvalds#250: FILE: mm/page-writeback.c:2090: + .procname = "dirty_background_ratio",$ WARNING: please, no spaces at the start of a line torvalds#250: FILE: mm/page-writeback.c:2090: + .procname = "dirty_background_ratio",$ ERROR: code indent should use tabs where possible torvalds#251: FILE: mm/page-writeback.c:2091: + .data = &dirty_background_ratio,$ WARNING: please, no spaces at the start of a line torvalds#251: FILE: mm/page-writeback.c:2091: + .data = &dirty_background_ratio,$ ERROR: code indent should use tabs where possible torvalds#252: FILE: mm/page-writeback.c:2092: + .maxlen = sizeof(dirty_background_ratio),$ WARNING: please, no spaces at the start of a line torvalds#252: FILE: mm/page-writeback.c:2092: + .maxlen = sizeof(dirty_background_ratio),$ ERROR: code indent should use tabs where possible torvalds#253: FILE: mm/page-writeback.c:2093: + .mode = 0644,$ WARNING: please, no spaces at the start of a line torvalds#253: FILE: mm/page-writeback.c:2093: + .mode = 0644,$ ERROR: code indent should use tabs where possible torvalds#254: FILE: mm/page-writeback.c:2094: + .proc_handler = dirty_background_ratio_handler,$ WARNING: please, no spaces at the start of a line torvalds#254: FILE: mm/page-writeback.c:2094: + .proc_handler = dirty_background_ratio_handler,$ ERROR: code indent should use tabs where possible torvalds#255: FILE: mm/page-writeback.c:2095: + .extra1 = SYSCTL_ZERO,$ WARNING: please, no spaces at the start of a line torvalds#255: FILE: mm/page-writeback.c:2095: + .extra1 = SYSCTL_ZERO,$ ERROR: code indent should use tabs where possible torvalds#256: FILE: mm/page-writeback.c:2096: + .extra2 = SYSCTL_ONE_HUNDRED,$ WARNING: please, no spaces at the start of a line torvalds#256: FILE: mm/page-writeback.c:2096: + .extra2 = SYSCTL_ONE_HUNDRED,$ WARNING: please, no spaces at the start of a line torvalds#257: FILE: mm/page-writeback.c:2097: + },$ WARNING: please, no spaces at the start of a line torvalds#258: FILE: mm/page-writeback.c:2098: + {$ ERROR: code indent should use tabs where possible torvalds#259: FILE: mm/page-writeback.c:2099: + .procname = "dirty_background_bytes",$ WARNING: please, no spaces at the start of a line torvalds#259: FILE: mm/page-writeback.c:2099: + .procname = "dirty_background_bytes",$ ERROR: code indent should use tabs where possible torvalds#260: FILE: mm/page-writeback.c:2100: + .data = &dirty_background_bytes,$ WARNING: please, no spaces at the start of a line torvalds#260: FILE: mm/page-writeback.c:2100: + .data = &dirty_background_bytes,$ ERROR: code indent should use tabs where possible torvalds#261: FILE: mm/page-writeback.c:2101: + .maxlen = sizeof(dirty_background_bytes),$ WARNING: please, no spaces at the start of a line torvalds#261: FILE: mm/page-writeback.c:2101: + .maxlen = sizeof(dirty_background_bytes),$ ERROR: code indent should use tabs where possible torvalds#262: FILE: mm/page-writeback.c:2102: + .mode = 0644,$ WARNING: please, no spaces at the start of a line torvalds#262: FILE: mm/page-writeback.c:2102: + .mode = 0644,$ ERROR: code indent should use tabs where possible torvalds#263: FILE: mm/page-writeback.c:2103: + .proc_handler = dirty_background_bytes_handler,$ WARNING: please, no spaces at the start of a line torvalds#263: FILE: mm/page-writeback.c:2103: + .proc_handler = dirty_background_bytes_handler,$ ERROR: code indent should use tabs where possible torvalds#264: FILE: mm/page-writeback.c:2104: + .extra1 = SYSCTL_LONG_ONE,$ WARNING: please, no spaces at the start of a line torvalds#264: FILE: mm/page-writeback.c:2104: + .extra1 = SYSCTL_LONG_ONE,$ WARNING: please, no spaces at the start of a line torvalds#265: FILE: mm/page-writeback.c:2105: + },$ WARNING: please, no spaces at the start of a line torvalds#266: FILE: mm/page-writeback.c:2106: + {$ ERROR: code indent should use tabs where possible torvalds#267: FILE: mm/page-writeback.c:2107: + .procname = "dirty_ratio",$ WARNING: please, no spaces at the start of a line torvalds#267: FILE: mm/page-writeback.c:2107: + .procname = "dirty_ratio",$ ERROR: code indent should use tabs where possible torvalds#268: FILE: mm/page-writeback.c:2108: + .data = &vm_dirty_ratio,$ WARNING: please, no spaces at the start of a line torvalds#268: FILE: mm/page-writeback.c:2108: + .data = &vm_dirty_ratio,$ ERROR: code indent should use tabs where possible torvalds#269: FILE: mm/page-writeback.c:2109: + .maxlen = sizeof(vm_dirty_ratio),$ WARNING: please, no spaces at the start of a line torvalds#269: FILE: mm/page-writeback.c:2109: + .maxlen = sizeof(vm_dirty_ratio),$ ERROR: code indent should use tabs where possible torvalds#270: FILE: mm/page-writeback.c:2110: + .mode = 0644,$ WARNING: please, no spaces at the start of a line torvalds#270: FILE: mm/page-writeback.c:2110: + .mode = 0644,$ ERROR: code indent should use tabs where possible torvalds#271: FILE: mm/page-writeback.c:2111: + .proc_handler = dirty_ratio_handler,$ WARNING: please, no spaces at the start of a line torvalds#271: FILE: mm/page-writeback.c:2111: + .proc_handler = dirty_ratio_handler,$ ERROR: code indent should use tabs where possible torvalds#272: FILE: mm/page-writeback.c:2112: + .extra1 = SYSCTL_ZERO,$ WARNING: please, no spaces at the start of a line torvalds#272: FILE: mm/page-writeback.c:2112: + .extra1 = SYSCTL_ZERO,$ ERROR: code indent should use tabs where possible torvalds#273: FILE: mm/page-writeback.c:2113: + .extra2 = SYSCTL_ONE_HUNDRED,$ WARNING: please, no spaces at the start of a line torvalds#273: FILE: mm/page-writeback.c:2113: + .extra2 = SYSCTL_ONE_HUNDRED,$ WARNING: please, no spaces at the start of a line torvalds#274: FILE: mm/page-writeback.c:2114: + },$ WARNING: please, no spaces at the start of a line torvalds#275: FILE: mm/page-writeback.c:2115: + {$ ERROR: code indent should use tabs where possible torvalds#276: FILE: mm/page-writeback.c:2116: + .procname = "dirty_bytes",$ WARNING: please, no spaces at the start of a line torvalds#276: FILE: mm/page-writeback.c:2116: + .procname = "dirty_bytes",$ ERROR: code indent should use tabs where possible torvalds#277: FILE: mm/page-writeback.c:2117: + .data = &vm_dirty_bytes,$ WARNING: please, no spaces at the start of a line torvalds#277: FILE: mm/page-writeback.c:2117: + .data = &vm_dirty_bytes,$ ERROR: code indent should use tabs where possible torvalds#278: FILE: mm/page-writeback.c:2118: + .maxlen = sizeof(vm_dirty_bytes),$ WARNING: please, no spaces at the start of a line torvalds#278: FILE: mm/page-writeback.c:2118: + .maxlen = sizeof(vm_dirty_bytes),$ ERROR: code indent should use tabs where possible torvalds#279: FILE: mm/page-writeback.c:2119: + .mode = 0644,$ WARNING: please, no spaces at the start of a line torvalds#279: FILE: mm/page-writeback.c:2119: + .mode = 0644,$ ERROR: code indent should use tabs where possible torvalds#280: FILE: mm/page-writeback.c:2120: + .proc_handler = dirty_bytes_handler,$ WARNING: please, no spaces at the start of a line torvalds#280: FILE: mm/page-writeback.c:2120: + .proc_handler = dirty_bytes_handler,$ ERROR: code indent should use tabs where possible torvalds#281: FILE: mm/page-writeback.c:2121: + .extra1 = (void *)&dirty_bytes_min,$ WARNING: please, no spaces at the start of a line torvalds#281: FILE: mm/page-writeback.c:2121: + .extra1 = (void *)&dirty_bytes_min,$ WARNING: please, no spaces at the start of a line torvalds#282: FILE: mm/page-writeback.c:2122: + },$ WARNING: please, no spaces at the start of a line torvalds#283: FILE: mm/page-writeback.c:2123: + {$ ERROR: code indent should use tabs where possible torvalds#284: FILE: mm/page-writeback.c:2124: + .procname = "dirty_writeback_centisecs",$ WARNING: please, no spaces at the start of a line torvalds#284: FILE: mm/page-writeback.c:2124: + .procname = "dirty_writeback_centisecs",$ ERROR: code indent should use tabs where possible torvalds#285: FILE: mm/page-writeback.c:2125: + .data = &dirty_writeback_interval,$ WARNING: please, no spaces at the start of a line torvalds#285: FILE: mm/page-writeback.c:2125: + .data = &dirty_writeback_interval,$ ERROR: code indent should use tabs where possible torvalds#286: FILE: mm/page-writeback.c:2126: + .maxlen = sizeof(dirty_writeback_interval),$ WARNING: please, no spaces at the start of a line torvalds#286: FILE: mm/page-writeback.c:2126: + .maxlen = sizeof(dirty_writeback_interval),$ ERROR: code indent should use tabs where possible torvalds#287: FILE: mm/page-writeback.c:2127: + .mode = 0644,$ WARNING: please, no spaces at the start of a line torvalds#287: FILE: mm/page-writeback.c:2127: + .mode = 0644,$ ERROR: code indent should use tabs where possible torvalds#288: FILE: mm/page-writeback.c:2128: + .proc_handler = dirty_writeback_centisecs_handler,$ WARNING: please, no spaces at the start of a line torvalds#288: FILE: mm/page-writeback.c:2128: + .proc_handler = dirty_writeback_centisecs_handler,$ WARNING: please, no spaces at the start of a line torvalds#289: FILE: mm/page-writeback.c:2129: + },$ WARNING: please, no spaces at the start of a line torvalds#290: FILE: mm/page-writeback.c:2130: + {$ ERROR: code indent should use tabs where possible torvalds#291: FILE: mm/page-writeback.c:2131: + .procname = "dirty_expire_centisecs",$ WARNING: please, no spaces at the start of a line torvalds#291: FILE: mm/page-writeback.c:2131: + .procname = "dirty_expire_centisecs",$ ERROR: code indent should use tabs where possible torvalds#292: FILE: mm/page-writeback.c:2132: + .data = &dirty_expire_interval,$ WARNING: please, no spaces at the start of a line torvalds#292: FILE: mm/page-writeback.c:2132: + .data = &dirty_expire_interval,$ ERROR: code indent should use tabs where possible torvalds#293: FILE: mm/page-writeback.c:2133: + .maxlen = sizeof(dirty_expire_interval),$ WARNING: please, no spaces at the start of a line torvalds#293: FILE: mm/page-writeback.c:2133: + .maxlen = sizeof(dirty_expire_interval),$ ERROR: code indent should use tabs where possible torvalds#294: FILE: mm/page-writeback.c:2134: + .mode = 0644,$ WARNING: please, no spaces at the start of a line torvalds#294: FILE: mm/page-writeback.c:2134: + .mode = 0644,$ ERROR: code indent should use tabs where possible torvalds#295: FILE: mm/page-writeback.c:2135: + .proc_handler = proc_dointvec_minmax,$ WARNING: please, no spaces at the start of a line torvalds#295: FILE: mm/page-writeback.c:2135: + .proc_handler = proc_dointvec_minmax,$ ERROR: code indent should use tabs where possible torvalds#296: FILE: mm/page-writeback.c:2136: + .extra1 = SYSCTL_ZERO,$ WARNING: please, no spaces at the start of a line torvalds#296: FILE: mm/page-writeback.c:2136: + .extra1 = SYSCTL_ZERO,$ WARNING: please, no spaces at the start of a line torvalds#297: FILE: mm/page-writeback.c:2137: + },$ total: 37 errors, 49 warnings, 287 lines checked NOTE: For some of the reported defects, checkpatch may be able to mechanically convert to the typical style using --fix or --fix-inplace. NOTE: Whitespace errors detected. You may wish to use scripts/cleanpatch or scripts/cleanfile ./patches/mm-move-page-writeback-sysctls-to-is-own-file.patch has style problems, please review. NOTE: If any of the errors are false positives, please report them to the maintainer, see CHECKPATCH in MAINTAINERS. Please run checkpatch prior to sending patches Cc: Iurii Zaikin <yzaikin@google.com> Cc: Kees Cook <keescook@chromium.org> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: zhanglianjie <zhanglianjie@uniontech.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Mark Brown <broonie@kernel.org>

On Sun, May 29 2022 at 8:46P -0400, Jens Axboe <axboe@kernel.dk> wrote: > On 5/28/22 6:17 PM, Matthew Wilcox wrote: > > Not quite sure whose bug this is. Current Linus head running xfstests > > against ext4 (probably not ext4's fault?) > > > > 01818 generic/250 run fstests generic/250 at 2022-05-28 23:48:09 > > 01818 EXT4-fs (dm-0): mounted filesystem with ordered data mode. Quota mode: none. > > 01818 EXT4-fs (dm-0): unmounting filesystem. > > 01818 EXT4-fs (dm-0): mounted filesystem with ordered data mode. Quota mode: none. > > 01818 EXT4-fs (dm-0): unmounting filesystem. > > 01818 EXT4-fs (dm-0): mounted filesystem with ordered data mode. Quota mode: none. > > 01818 Buffer I/O error on dev dm-0, logical block 3670000, async page read > > 01818 EXT4-fs (dm-0): unmounting filesystem. > > 01818 EXT4-fs (dm-0): mounted filesystem with ordered data mode. Quota mode: none. > > 01818 EXT4-fs (dm-0): unmounting filesystem. > > 01818 general protection fault, probably for non-canonical address 0xdead000000000122: 0000 [#1] PREEMPT SMP NOPTI > > 01818 CPU: 0 PID: 1579117 Comm: dmsetup Kdump: loaded Not tainted 5.18.0-11049-g1dec3d7fd0c3-dirty torvalds#262 > > 01818 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014 > > 01818 RIP: 0010:__cpuhp_state_remove_instance+0xf0/0x1b0 > > 01818 Code: a0 f8 d7 81 42 3b 1c 28 7f d9 4c 89 e1 31 d2 89 de 89 7d dc e8 01 fd ff ff 8b 7d dc eb c5 49 8b 04 24 49 8b 54 24 08 48 85 c0 <48> 89 02 74 04 48 89 50 08 48 b8 00 01 00 00 00 00 ad de 48 c7 c7 > > 01818 RSP: 0018:ffff888101fcfc60 EFLAGS: 00010286 > > 01818 RAX: dead000000000100 RBX: 0000000000000017 RCX: 0000000000000000 > > 01818 RDX: dead000000000122 RSI: ffff8881233b0ae8 RDI: ffffffff81e3b080 > > 01818 RBP: ffff888101fcfc88 R08: 0000000000000008 R09: 0000000000000003 > > 01818 R10: 0000000000000000 R11: 00000000002dc6c0 R12: ffff8881233b0ae8 > > 01818 R13: 0000000000000000 R14: ffffffff81e38f58 R15: ffff88817b5a3c00 > > 01818 FS: 00007ff56daec280(0000) GS:ffff888275800000(0000) knlGS:0000000000000000 > > 01818 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > > 01818 CR2: 00005591ad94f198 CR3: 000000017b5a0004 CR4: 0000000000770eb0 > > 01818 PKRU: 55555554 > > 01818 Call Trace: > > 01818 <TASK> > > 01818 ? kfree+0x66/0x250 > > 01818 bioset_exit+0x32/0x210 > > 01818 cleanup_mapped_device+0x34/0xf0 > > 01818 __dm_destroy+0x149/0x1f0 > > 01818 ? table_clear+0xc0/0xc0 > > 01818 dm_destroy+0xe/0x10 > > 01818 dev_remove+0xd9/0x120 > > 01818 ctl_ioctl+0x1cb/0x420 > > 01818 dm_ctl_ioctl+0x9/0x10 > > 01818 __x64_sys_ioctl+0x89/0xb0 > > 01818 do_syscall_64+0x35/0x80 > > 01818 entry_SYSCALL_64_after_hwframe+0x46/0xb0 > > 01818 RIP: 0033:0x7ff56de3b397 > > 01818 Code: 3c 1c e8 1c ff ff ff 85 c0 79 87 49 c7 c4 ff ff ff ff 5b 5d 4c 89 e0 41 5c c3 66 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a9 da 0d 00 f7 d8 64 89 01 48 > > 01818 RSP: 002b:00007ffe55367ef8 EFLAGS: 00000206 ORIG_RAX: 0000000000000010 > > 01818 RAX: ffffffffffffffda RBX: 00007ff56df31a8e RCX: 00007ff56de3b397 > > 01818 RDX: 000055daad7cab30 RSI: 00000000c138fd04 RDI: 0000000000000003 > > 01818 RBP: 00007ffe55367fb0 R08: 00007ff56df81558 R09: 00007ffe55367d60 > > 01818 R10: 00007ff56df808a2 R11: 0000000000000206 R12: 00007ff56df808a2 > > 01818 R13: 00007ff56df808a2 R14: 00007ff56df808a2 R15: 00007ff56df808a2 > > 01818 </TASK> > > 01818 Modules linked in: crct10dif_generic crct10dif_common [last unloaded: crc_t10dif] > > I suspect dm is calling bioset_exit() multiple times? Which it probably > should not. > > The reset of bioset_exit() is resilient against this, so might be best > to include bio_alloc_cache_destroy() in that. > > > diff --git a/block/bio.c b/block/bio.c > index a3893d8..be3937b 100644 > --- a/block/bio.c > +++ b/block/bio.c > @@ -722,6 +722,7 @@ static void bio_alloc_cache_destroy(struct bio_set *bs) > bio_alloc_cache_prune(cache, -1U); > } > free_percpu(bs->cache); > + bs->cache = NULL; > } > > /** Yes, we need the above to fix the crash. Does it also make sense to add this?

Otherwise it fails to probe indicated by [ 30.524888] imx-dcss 32e00000.display-controller: No interconnect support may cause display underflows! Closes: torvalds#262 Signed-off-by: Guido Günther <agx@sigxcpu.org>

PD#151225: driver defect clean up: torvalds#228 torvalds#262 torvalds#354 torvalds#407 torvalds#442 torvalds#445 torvalds#461 torvalds#576 torvalds#580 torvalds#598 torvalds#599 torvalds#615 torvalds#616 torvalds#671 torvalds#756 torvalds#760 torvalds#874 Change-Id: I1bc47c3e30ecfa1ca44e53f91201aa4e09ff19f5 Signed-off-by: Bencheng Jing <bencheng.jing@amlogic.com>

Add a new test case which performs double query of the bpf_mprog through libbpf API, but also via raw bpf(2) syscall. This is testing to gather first the count and then in a subsequent probe the full information with the program array without clearing passed structs in between. # ./vmtest.sh -- ./test_progs -t tc_opts [...] ./test_progs -t tc_opts [ 1.398818] tsc: Refined TSC clocksource calibration: 3407.999 MHz [ 1.400263] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x311fd336761, max_idle_ns: 440795243819 ns [ 1.402734] clocksource: Switched to clocksource tsc [ 1.426639] bpf_testmod: loading out-of-tree module taints kernel. [ 1.428112] bpf_testmod: module verification failed: signature and/or required key missing - tainting kernel torvalds#252 tc_opts_after:OK torvalds#253 tc_opts_append:OK torvalds#254 tc_opts_basic:OK torvalds#255 tc_opts_before:OK torvalds#256 tc_opts_chain_classic:OK torvalds#257 tc_opts_chain_mixed:OK torvalds#258 tc_opts_delete_empty:OK torvalds#259 tc_opts_demixed:OK torvalds#260 tc_opts_detach:OK torvalds#261 tc_opts_detach_after:OK torvalds#262 tc_opts_detach_before:OK torvalds#263 tc_opts_dev_cleanup:OK torvalds#264 tc_opts_invalid:OK torvalds#265 tc_opts_max:OK torvalds#266 tc_opts_mixed:OK torvalds#267 tc_opts_prepend:OK torvalds#268 tc_opts_query:OK <--- (new test) torvalds#269 tc_opts_replace:OK torvalds#270 tc_opts_revision:OK Summary: 19/0 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

Add a new test case to query on an empty bpf_mprog and pass the revision directly into expected_revision for attachment to assert that this does succeed. ./test_progs -t tc_opts [ 1.406778] tsc: Refined TSC clocksource calibration: 3407.990 MHz [ 1.408863] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x311fcaf6eb0, max_idle_ns: 440795321766 ns [ 1.412419] clocksource: Switched to clocksource tsc [ 1.428671] bpf_testmod: loading out-of-tree module taints kernel. [ 1.430260] bpf_testmod: module verification failed: signature and/or required key missing - tainting kernel torvalds#252 tc_opts_after:OK torvalds#253 tc_opts_append:OK torvalds#254 tc_opts_basic:OK torvalds#255 tc_opts_before:OK torvalds#256 tc_opts_chain_classic:OK torvalds#257 tc_opts_chain_mixed:OK torvalds#258 tc_opts_delete_empty:OK torvalds#259 tc_opts_demixed:OK torvalds#260 tc_opts_detach:OK torvalds#261 tc_opts_detach_after:OK torvalds#262 tc_opts_detach_before:OK torvalds#263 tc_opts_dev_cleanup:OK torvalds#264 tc_opts_invalid:OK torvalds#265 tc_opts_max:OK torvalds#266 tc_opts_mixed:OK torvalds#267 tc_opts_prepend:OK torvalds#268 tc_opts_query:OK torvalds#269 tc_opts_query_attach:OK <--- (new test) torvalds#270 tc_opts_replace:OK torvalds#271 tc_opts_revision:OK Summary: 20/0 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>