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Update ratelimit.c #90

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Update ratelimit.c #90

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renweihub
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fix a bug in ratelimit, if the "begin" doesn't update at the same time with printed, the print will start from 1 in loops except for the first time, lets to only 9 logs suppressed, but not 10 as expected.

fix a bug in ratelimit, if the "begin" doesn't update at the same time with printed, the print will start from 1 in loops except for the first time, lets to only 9 logs suppressed, but not 10 as expected.
@luyanseu
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luyanseu commented Apr 8, 2014

good

xnox pushed a commit to xnox/linux that referenced this pull request Apr 13, 2014
Turn it into (for example):

[    0.073380] x86: Booting SMP configuration:
[    0.074005] .... node   #0, CPUs:          #1   #2   #3   #4   #5   torvalds#6   torvalds#7
[    0.603005] .... node   #1, CPUs:     torvalds#8   torvalds#9  torvalds#10  torvalds#11  torvalds#12  torvalds#13  torvalds#14  torvalds#15
[    1.200005] .... node   #2, CPUs:    torvalds#16  torvalds#17  torvalds#18  torvalds#19  torvalds#20  torvalds#21  torvalds#22  torvalds#23
[    1.796005] .... node   #3, CPUs:    torvalds#24  torvalds#25  torvalds#26  torvalds#27  torvalds#28  torvalds#29  torvalds#30  torvalds#31
[    2.393005] .... node   #4, CPUs:    torvalds#32  torvalds#33  torvalds#34  torvalds#35  torvalds#36  torvalds#37  torvalds#38  torvalds#39
[    2.996005] .... node   #5, CPUs:    torvalds#40  torvalds#41  torvalds#42  torvalds#43  torvalds#44  torvalds#45  torvalds#46  torvalds#47
[    3.600005] .... node   torvalds#6, CPUs:    torvalds#48  torvalds#49  torvalds#50  torvalds#51  #52  #53  torvalds#54  torvalds#55
[    4.202005] .... node   torvalds#7, CPUs:    torvalds#56  torvalds#57  #58  torvalds#59  torvalds#60  torvalds#61  torvalds#62  torvalds#63
[    4.811005] .... node   torvalds#8, CPUs:    torvalds#64  torvalds#65  torvalds#66  torvalds#67  torvalds#68  torvalds#69  #70  torvalds#71
[    5.421006] .... node   torvalds#9, CPUs:    torvalds#72  torvalds#73  torvalds#74  torvalds#75  torvalds#76  torvalds#77  torvalds#78  torvalds#79
[    6.032005] .... node  torvalds#10, CPUs:    torvalds#80  torvalds#81  torvalds#82  torvalds#83  torvalds#84  torvalds#85  torvalds#86  torvalds#87
[    6.648006] .... node  torvalds#11, CPUs:    torvalds#88  torvalds#89  torvalds#90  torvalds#91  torvalds#92  torvalds#93  torvalds#94  torvalds#95
[    7.262005] .... node  torvalds#12, CPUs:    torvalds#96  torvalds#97  torvalds#98  torvalds#99 torvalds#100 torvalds#101 torvalds#102 torvalds#103
[    7.865005] .... node  torvalds#13, CPUs:   torvalds#104 torvalds#105 torvalds#106 torvalds#107 torvalds#108 torvalds#109 torvalds#110 torvalds#111
[    8.466005] .... node  torvalds#14, CPUs:   torvalds#112 torvalds#113 torvalds#114 torvalds#115 torvalds#116 torvalds#117 torvalds#118 torvalds#119
[    9.073006] .... node  torvalds#15, CPUs:   torvalds#120 torvalds#121 torvalds#122 torvalds#123 torvalds#124 torvalds#125 torvalds#126 torvalds#127
[    9.679901] x86: Booted up 16 nodes, 128 CPUs

and drop useless elements.

Change num_digits() to hpa's division-avoiding, cell-phone-typed
version which he went at great lengths and pains to submit on a
Saturday evening.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: huawei.libin@huawei.com
Cc: wangyijing@huawei.com
Cc: fenghua.yu@intel.com
Cc: guohanjun@huawei.com
Cc: paul.gortmaker@windriver.com
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20130930095624.GB16383@pd.tnic
Signed-off-by: Ingo Molnar <mingo@kernel.org>
ddstreet pushed a commit to ddstreet/linux that referenced this pull request May 19, 2014
WARNING: line over 80 characters
torvalds#90: FILE: mm/rmap.c:1040:
+		 * pte lock is held(spinlock), which implies preemption disabled.

total: 0 errors, 1 warnings, 69 lines checked

./patches/mm-use-a-light-weight-__mod_zone_page_state-in-mlocked_vma_newpage.patch has style problems, please review.

If any of these errors are false positives, please report
them to the maintainer, see CHECKPATCH in MAINTAINERS.

Please run checkpatch prior to sending patches

Cc: Jianyu Zhan <nasa4836@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
swarren pushed a commit to swarren/linux-tegra that referenced this pull request May 20, 2014
WARNING: line over 80 characters
torvalds#90: FILE: mm/rmap.c:1040:
+		 * pte lock is held(spinlock), which implies preemption disabled.

total: 0 errors, 1 warnings, 69 lines checked

./patches/mm-use-a-light-weight-__mod_zone_page_state-in-mlocked_vma_newpage.patch has style problems, please review.

If any of these errors are false positives, please report
them to the maintainer, see CHECKPATCH in MAINTAINERS.

Please run checkpatch prior to sending patches

Cc: Jianyu Zhan <nasa4836@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
tom3q pushed a commit to tom3q/linux that referenced this pull request May 26, 2014
WARNING: line over 80 characters
torvalds#90: FILE: mm/rmap.c:1040:
+		 * pte lock is held(spinlock), which implies preemption disabled.

total: 0 errors, 1 warnings, 69 lines checked

./patches/mm-use-a-light-weight-__mod_zone_page_state-in-mlocked_vma_newpage.patch has style problems, please review.

If any of these errors are false positives, please report
them to the maintainer, see CHECKPATCH in MAINTAINERS.

Please run checkpatch prior to sending patches

Cc: Jianyu Zhan <nasa4836@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
ddstreet pushed a commit to ddstreet/linux that referenced this pull request May 28, 2014
WARNING: line over 80 characters
torvalds#90: FILE: mm/rmap.c:1040:
+		 * pte lock is held(spinlock), which implies preemption disabled.

total: 0 errors, 1 warnings, 69 lines checked

./patches/mm-use-a-light-weight-__mod_zone_page_state-in-mlocked_vma_newpage.patch has style problems, please review.

If any of these errors are false positives, please report
them to the maintainer, see CHECKPATCH in MAINTAINERS.

Please run checkpatch prior to sending patches

Cc: Jianyu Zhan <nasa4836@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Gnurou pushed a commit to Gnurou/linux that referenced this pull request Jun 6, 2014
WARNING: line over 80 characters
torvalds#90: FILE: mm/rmap.c:1040:
+		 * pte lock is held(spinlock), which implies preemption disabled.

total: 0 errors, 1 warnings, 69 lines checked

./patches/mm-use-a-light-weight-__mod_zone_page_state-in-mlocked_vma_newpage.patch has style problems, please review.

If any of these errors are false positives, please report
them to the maintainer, see CHECKPATCH in MAINTAINERS.

Please run checkpatch prior to sending patches

Cc: Jianyu Zhan <nasa4836@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
@Elizafox
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Elizafox commented Jan 8, 2015

@MidnightJanitor
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Omg fuck off Elizabeth Myers

Sent from my iPhone

On Jan 8, 2015, at 9:05 AM, Elizabeth Myers notifications@github.com wrote:

@renweihub Linus doesn't accept PR's on github


Reply to this email directly or view it on GitHub.

@swarren
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Contributor

swarren commented Jan 9, 2015

samcn, that kind of language really isn't appropriate.

@renweihub renweihub closed this Jan 29, 2015
@renweihub renweihub reopened this Jan 29, 2015
@ariccio
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ariccio commented Jan 30, 2015

samcn, that kind of language really isn't appropriate.

(That's a right reserved for Linus, and Linux only)

0day-ci pushed a commit to 0day-ci/linux that referenced this pull request Apr 15, 2016
This adds test cases mostly around ARG_PTR_TO_RAW_STACK to check the
verifier behaviour.

  [...]
  torvalds#84 raw_stack: no skb_load_bytes OK
  torvalds#85 raw_stack: skb_load_bytes, no init OK
  torvalds#86 raw_stack: skb_load_bytes, init OK
  torvalds#87 raw_stack: skb_load_bytes, spilled regs around bounds OK
  torvalds#88 raw_stack: skb_load_bytes, spilled regs corruption OK
  torvalds#89 raw_stack: skb_load_bytes, spilled regs corruption 2 OK
  torvalds#90 raw_stack: skb_load_bytes, spilled regs + data OK
  torvalds#91 raw_stack: skb_load_bytes, invalid access 1 OK
  torvalds#92 raw_stack: skb_load_bytes, invalid access 2 OK
  torvalds#93 raw_stack: skb_load_bytes, invalid access 3 OK
  torvalds#94 raw_stack: skb_load_bytes, invalid access 4 OK
  torvalds#95 raw_stack: skb_load_bytes, invalid access 5 OK
  torvalds#96 raw_stack: skb_load_bytes, invalid access 6 OK
  torvalds#97 raw_stack: skb_load_bytes, large access OK
  Summary: 98 PASSED, 0 FAILED

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
0day-ci pushed a commit to 0day-ci/linux that referenced this pull request May 24, 2016
…patch-fixes

WARNING: Missing a blank line after declarations
torvalds#34: FILE: include/linux/page_idle.h:50:
+	struct page_ext *page_ext;
+	page_ext = lookup_page_ext(page);

WARNING: Missing a blank line after declarations
torvalds#45: FILE: include/linux/page_idle.h:60:
+	struct page_ext *page_ext;
+	page_ext = lookup_page_ext(page);

WARNING: Missing a blank line after declarations
torvalds#57: FILE: include/linux/page_idle.h:70:
+	struct page_ext *page_ext;
+	page_ext = lookup_page_ext(page);

WARNING: Missing a blank line after declarations
torvalds#68: FILE: include/linux/page_idle.h:80:
+	struct page_ext *page_ext;
+	page_ext = lookup_page_ext(page);

WARNING: Missing a blank line after declarations
torvalds#79: FILE: include/linux/page_idle.h:90:
+	struct page_ext *page_ext;
+	page_ext = lookup_page_ext(page);

WARNING: Missing a blank line after declarations
torvalds#90: FILE: include/linux/page_idle.h:100:
+	struct page_ext *page_ext;
+	page_ext = lookup_page_ext(page);

total: 1 errors, 6 warnings, 196 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.

./patches/mm-check-the-return-value-of-lookup_page_ext-for-all-call-sites.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: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Yang Shi <yang.shi@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
0day-ci pushed a commit to 0day-ci/linux that referenced this pull request May 27, 2016
…patch-fixes

WARNING: Missing a blank line after declarations
torvalds#34: FILE: include/linux/page_idle.h:50:
+	struct page_ext *page_ext;
+	page_ext = lookup_page_ext(page);

WARNING: Missing a blank line after declarations
torvalds#45: FILE: include/linux/page_idle.h:60:
+	struct page_ext *page_ext;
+	page_ext = lookup_page_ext(page);

WARNING: Missing a blank line after declarations
torvalds#57: FILE: include/linux/page_idle.h:70:
+	struct page_ext *page_ext;
+	page_ext = lookup_page_ext(page);

WARNING: Missing a blank line after declarations
torvalds#68: FILE: include/linux/page_idle.h:80:
+	struct page_ext *page_ext;
+	page_ext = lookup_page_ext(page);

WARNING: Missing a blank line after declarations
torvalds#79: FILE: include/linux/page_idle.h:90:
+	struct page_ext *page_ext;
+	page_ext = lookup_page_ext(page);

WARNING: Missing a blank line after declarations
torvalds#90: FILE: include/linux/page_idle.h:100:
+	struct page_ext *page_ext;
+	page_ext = lookup_page_ext(page);

total: 1 errors, 6 warnings, 196 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.

./patches/mm-check-the-return-value-of-lookup_page_ext-for-all-call-sites.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: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Yang Shi <yang.shi@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
0day-ci pushed a commit to 0day-ci/linux that referenced this pull request Jul 24, 2016
…s-checkpatch-fixes

ERROR: "foo * bar" should be "foo *bar"
torvalds#90: FILE: mm/mempool.c:311:
+void * mempool_alloc(mempool_t *pool, gfp_t gfp_mask)

total: 5 errors, 0 warnings, 52 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.

./patches/revert-mm-mempool-only-set-__gfp_nomemalloc-if-there-are-free-elements.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: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
0day-ci pushed a commit to 0day-ci/linux that referenced this pull request Jul 27, 2016
…s-checkpatch-fixes

ERROR: "foo * bar" should be "foo *bar"
torvalds#90: FILE: mm/mempool.c:311:
+void * mempool_alloc(mempool_t *pool, gfp_t gfp_mask)

total: 5 errors, 0 warnings, 52 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.

./patches/revert-mm-mempool-only-set-__gfp_nomemalloc-if-there-are-free-elements.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: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
0day-ci pushed a commit to 0day-ci/linux that referenced this pull request Jul 27, 2016
…s-checkpatch-fixes

ERROR: "foo * bar" should be "foo *bar"
torvalds#90: FILE: mm/mempool.c:311:
+void * mempool_alloc(mempool_t *pool, gfp_t gfp_mask)

total: 5 errors, 0 warnings, 52 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.

./patches/revert-mm-mempool-only-set-__gfp_nomemalloc-if-there-are-free-elements.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: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
0day-ci pushed a commit to 0day-ci/linux that referenced this pull request Aug 26, 2016
…eckpatch-fixes

WARNING: do not add new typedefs
torvalds#86: FILE: arch/powerpc/include/asm/elf_util.h:35:
+typedef unsigned long func_desc_t;

WARNING: do not add new typedefs
torvalds#90: FILE: arch/powerpc/include/asm/elf_util.h:39:
+typedef struct ppc64_opd_entry func_desc_t;

WARNING: Block comments use * on subsequent lines
torvalds#94: FILE: arch/powerpc/include/asm/elf_util.h:43:
+/* Like PPC32, we need little trampolines to do > 24-bit jumps (into
+   the kernel itself).  But on PPC64, these need to be used for every

WARNING: Block comments use a trailing */ on a separate line
torvalds#95: FILE: arch/powerpc/include/asm/elf_util.h:44:
+   jump, actually, to reset r2 (TOC+0x8000). */

ERROR: open brace '{' following struct go on the same line
torvalds#97: FILE: arch/powerpc/include/asm/elf_util.h:46:
+struct ppc64_stub_entry
+{

WARNING: Block comments use a trailing */ on a separate line
torvalds#100: FILE: arch/powerpc/include/asm/elf_util.h:49:
+	 * so we don't have to modify the trampoline load instruction. */

WARNING: Block comments use * on subsequent lines
torvalds#110: FILE: arch/powerpc/include/asm/elf_util.h:59:
+/* r2 is the TOC pointer: it actually points 0x8000 into the TOC (this
+   gives the value maximum span in an instruction which uses a signed

WARNING: Block comments use a trailing */ on a separate line
torvalds#111: FILE: arch/powerpc/include/asm/elf_util.h:60:
+   offset) */

WARNING: Block comments use * on subsequent lines
torvalds#132: FILE: arch/powerpc/include/asm/module.h:18:
+/* Both low and high 16 bits are added as SIGNED additions, so if low
+   16 bits has high bit set, high 16 bits must be adjusted.  These

WARNING: Block comments use a trailing */ on a separate line
torvalds#133: FILE: arch/powerpc/include/asm/module.h:19:
+   macros do that (stolen from binutils). */

WARNING: space prohibited between function name and open parenthesis '('
torvalds#136: FILE: arch/powerpc/include/asm/module.h:22:
+#define PPC_HA(v) PPC_HI ((v) + 0x8000)

ERROR: Macros with complex values should be enclosed in parentheses
torvalds#136: FILE: arch/powerpc/include/asm/module.h:22:
+#define PPC_HA(v) PPC_HI ((v) + 0x8000)

WARNING: please, no spaces at the start of a line
torvalds#210: FILE: arch/powerpc/kernel/elf_util_64.c:32:
+ (((1 << (((other) & STO_PPC64_LOCAL_MASK) >> STO_PPC64_LOCAL_BIT)) >> 2) << 2)$

WARNING: Block comments use a trailing */ on a separate line
torvalds#216: FILE: arch/powerpc/kernel/elf_util_64.c:38:
+	 * of function and try to derive r2 from it). */

WARNING: line over 80 characters
torvalds#357: FILE: arch/powerpc/kernel/elf_util_64.c:179:
+				value = stub_for_addr(elf_info, value, obj_name);

WARNING: line over 80 characters
torvalds#363: FILE: arch/powerpc/kernel/elf_util_64.c:185:
+				squash_toc_save_inst(strtab + sym->st_name, value);

ERROR: space required before the open brace '{'
torvalds#369: FILE: arch/powerpc/kernel/elf_util_64.c:191:
+			if (value + 0x2000000 > 0x3ffffff || (value & 3) != 0){

WARNING: line over 80 characters
torvalds#560: FILE: arch/powerpc/kernel/module_64.c:341:
+	sechdrs[me->arch.elf_info.stubs_section].sh_size = get_stubs_size(hdr, sechdrs);

WARNING: line over 80 characters
torvalds#613: FILE: arch/powerpc/kernel/module_64.c:380:
+	struct elf_shdr *stubs_sec = &elf_info->sechdrs[elf_info->stubs_section];

WARNING: line over 80 characters
torvalds#889: FILE: arch/powerpc/kernel/module_64.c:498:
+	num_stubs = sechdrs[me->arch.elf_info.stubs_section].sh_size / sizeof(*entry);

total: 3 errors, 17 warnings, 830 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.

./patches/powerpc-factor-out-relocation-code-from-module_64c-to-elf_util_64c.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: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
koct9i pushed a commit to koct9i/linux that referenced this pull request Aug 27, 2016
…eckpatch-fixes

WARNING: do not add new typedefs
torvalds#86: FILE: arch/powerpc/include/asm/elf_util.h:35:
+typedef unsigned long func_desc_t;

WARNING: do not add new typedefs
torvalds#90: FILE: arch/powerpc/include/asm/elf_util.h:39:
+typedef struct ppc64_opd_entry func_desc_t;

WARNING: Block comments use * on subsequent lines
torvalds#94: FILE: arch/powerpc/include/asm/elf_util.h:43:
+/* Like PPC32, we need little trampolines to do > 24-bit jumps (into
+   the kernel itself).  But on PPC64, these need to be used for every

WARNING: Block comments use a trailing */ on a separate line
torvalds#95: FILE: arch/powerpc/include/asm/elf_util.h:44:
+   jump, actually, to reset r2 (TOC+0x8000). */

ERROR: open brace '{' following struct go on the same line
torvalds#97: FILE: arch/powerpc/include/asm/elf_util.h:46:
+struct ppc64_stub_entry
+{

WARNING: Block comments use a trailing */ on a separate line
torvalds#100: FILE: arch/powerpc/include/asm/elf_util.h:49:
+	 * so we don't have to modify the trampoline load instruction. */

WARNING: Block comments use * on subsequent lines
torvalds#110: FILE: arch/powerpc/include/asm/elf_util.h:59:
+/* r2 is the TOC pointer: it actually points 0x8000 into the TOC (this
+   gives the value maximum span in an instruction which uses a signed

WARNING: Block comments use a trailing */ on a separate line
torvalds#111: FILE: arch/powerpc/include/asm/elf_util.h:60:
+   offset) */

WARNING: Block comments use * on subsequent lines
torvalds#132: FILE: arch/powerpc/include/asm/module.h:18:
+/* Both low and high 16 bits are added as SIGNED additions, so if low
+   16 bits has high bit set, high 16 bits must be adjusted.  These

WARNING: Block comments use a trailing */ on a separate line
torvalds#133: FILE: arch/powerpc/include/asm/module.h:19:
+   macros do that (stolen from binutils). */

WARNING: space prohibited between function name and open parenthesis '('
torvalds#136: FILE: arch/powerpc/include/asm/module.h:22:
+#define PPC_HA(v) PPC_HI ((v) + 0x8000)

ERROR: Macros with complex values should be enclosed in parentheses
torvalds#136: FILE: arch/powerpc/include/asm/module.h:22:
+#define PPC_HA(v) PPC_HI ((v) + 0x8000)

WARNING: please, no spaces at the start of a line
torvalds#210: FILE: arch/powerpc/kernel/elf_util_64.c:32:
+ (((1 << (((other) & STO_PPC64_LOCAL_MASK) >> STO_PPC64_LOCAL_BIT)) >> 2) << 2)$

WARNING: Block comments use a trailing */ on a separate line
torvalds#216: FILE: arch/powerpc/kernel/elf_util_64.c:38:
+	 * of function and try to derive r2 from it). */

WARNING: line over 80 characters
torvalds#357: FILE: arch/powerpc/kernel/elf_util_64.c:179:
+				value = stub_for_addr(elf_info, value, obj_name);

WARNING: line over 80 characters
torvalds#363: FILE: arch/powerpc/kernel/elf_util_64.c:185:
+				squash_toc_save_inst(strtab + sym->st_name, value);

ERROR: space required before the open brace '{'
torvalds#369: FILE: arch/powerpc/kernel/elf_util_64.c:191:
+			if (value + 0x2000000 > 0x3ffffff || (value & 3) != 0){

WARNING: line over 80 characters
torvalds#560: FILE: arch/powerpc/kernel/module_64.c:341:
+	sechdrs[me->arch.elf_info.stubs_section].sh_size = get_stubs_size(hdr, sechdrs);

WARNING: line over 80 characters
torvalds#613: FILE: arch/powerpc/kernel/module_64.c:380:
+	struct elf_shdr *stubs_sec = &elf_info->sechdrs[elf_info->stubs_section];

WARNING: line over 80 characters
torvalds#889: FILE: arch/powerpc/kernel/module_64.c:498:
+	num_stubs = sechdrs[me->arch.elf_info.stubs_section].sh_size / sizeof(*entry);

total: 3 errors, 17 warnings, 830 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.

./patches/powerpc-factor-out-relocation-code-from-module_64c-to-elf_util_64c.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: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
fengguang pushed a commit to 0day-ci/linux that referenced this pull request Nov 9, 2016
ERROR: Please use git commit description style 'commit <12+ chars of sha1> ("<title line>")' - ie: 'commit 0123456789ab ("commit description")'
torvalds#16: 
flag.  However, this flag was originally silently dropped by 1e98779

WARNING: line over 80 characters
torvalds#89: FILE: mm/nommu.c:179:
+static long __get_user_pages_unlocked(struct task_struct *tsk, struct mm_struct *mm,

WARNING: line over 80 characters
torvalds#90: FILE: mm/nommu.c:180:
+				      unsigned long start, unsigned long nr_pages,

WARNING: line over 80 characters
torvalds#91: FILE: mm/nommu.c:181:
+			              struct page **pages, unsigned int gup_flags)

ERROR: code indent should use tabs where possible
torvalds#91: FILE: mm/nommu.c:181:
+^I^I^I              struct page **pages, unsigned int gup_flags)$

total: 2 errors, 3 warnings, 116 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-unexport-__get_user_pages_unlocked.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: Lorenzo Stoakes <lstoakes@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
fengguang pushed a commit to 0day-ci/linux that referenced this pull request Nov 9, 2016
ERROR: Please use git commit description style 'commit <12+ chars of sha1> ("<title line>")' - ie: 'commit 0123456789ab ("commit description")'
torvalds#16:
flag.  However, this flag was originally silently dropped by 1e98779

WARNING: line over 80 characters
torvalds#89: FILE: mm/nommu.c:179:
+static long __get_user_pages_unlocked(struct task_struct *tsk, struct mm_struct *mm,

WARNING: line over 80 characters
torvalds#90: FILE: mm/nommu.c:180:
+				      unsigned long start, unsigned long nr_pages,

WARNING: line over 80 characters
torvalds#91: FILE: mm/nommu.c:181:
+			              struct page **pages, unsigned int gup_flags)

ERROR: code indent should use tabs where possible
torvalds#91: FILE: mm/nommu.c:181:
+^I^I^I              struct page **pages, unsigned int gup_flags)$

total: 2 errors, 3 warnings, 116 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-unexport-__get_user_pages_unlocked.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: Lorenzo Stoakes <lstoakes@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
fengguang pushed a commit to 0day-ci/linux that referenced this pull request Nov 25, 2016
ERROR: Please use git commit description style 'commit <12+ chars of sha1> ("<title line>")' - ie: 'commit 0123456789ab ("commit description")'
torvalds#16: 
flag.  However, this flag was originally silently dropped by 1e98779

WARNING: line over 80 characters
torvalds#89: FILE: mm/nommu.c:179:
+static long __get_user_pages_unlocked(struct task_struct *tsk, struct mm_struct *mm,

WARNING: line over 80 characters
torvalds#90: FILE: mm/nommu.c:180:
+				      unsigned long start, unsigned long nr_pages,

WARNING: line over 80 characters
torvalds#91: FILE: mm/nommu.c:181:
+			              struct page **pages, unsigned int gup_flags)

ERROR: code indent should use tabs where possible
torvalds#91: FILE: mm/nommu.c:181:
+^I^I^I              struct page **pages, unsigned int gup_flags)$

total: 2 errors, 3 warnings, 116 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-unexport-__get_user_pages_unlocked.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: Lorenzo Stoakes <lstoakes@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
fengguang pushed a commit to 0day-ci/linux that referenced this pull request Nov 30, 2016
ERROR: Please use git commit description style 'commit <12+ chars of sha1> ("<title line>")' - ie: 'commit 0123456789ab ("commit description")'
torvalds#16:
flag.  However, this flag was originally silently dropped by 1e98779

WARNING: line over 80 characters
torvalds#89: FILE: mm/nommu.c:179:
+static long __get_user_pages_unlocked(struct task_struct *tsk, struct mm_struct *mm,

WARNING: line over 80 characters
torvalds#90: FILE: mm/nommu.c:180:
+				      unsigned long start, unsigned long nr_pages,

WARNING: line over 80 characters
torvalds#91: FILE: mm/nommu.c:181:
+			              struct page **pages, unsigned int gup_flags)

ERROR: code indent should use tabs where possible
torvalds#91: FILE: mm/nommu.c:181:
+^I^I^I              struct page **pages, unsigned int gup_flags)$

total: 2 errors, 3 warnings, 116 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-unexport-__get_user_pages_unlocked.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: Lorenzo Stoakes <lstoakes@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
fengguang pushed a commit to 0day-ci/linux that referenced this pull request Dec 2, 2016
ERROR: Please use git commit description style 'commit <12+ chars of sha1> ("<title line>")' - ie: 'commit 0123456789ab ("commit description")'
torvalds#16: 
flag.  However, this flag was originally silently dropped by 1e98779

WARNING: line over 80 characters
torvalds#89: FILE: mm/nommu.c:179:
+static long __get_user_pages_unlocked(struct task_struct *tsk, struct mm_struct *mm,

WARNING: line over 80 characters
torvalds#90: FILE: mm/nommu.c:180:
+				      unsigned long start, unsigned long nr_pages,

WARNING: line over 80 characters
torvalds#91: FILE: mm/nommu.c:181:
+			              struct page **pages, unsigned int gup_flags)

ERROR: code indent should use tabs where possible
torvalds#91: FILE: mm/nommu.c:181:
+^I^I^I              struct page **pages, unsigned int gup_flags)$

total: 2 errors, 3 warnings, 116 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-unexport-__get_user_pages_unlocked.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: Lorenzo Stoakes <lstoakes@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
fengguang pushed a commit to 0day-ci/linux that referenced this pull request Dec 8, 2016
ERROR: Please use git commit description style 'commit <12+ chars of sha1> ("<title line>")' - ie: 'commit 0123456789ab ("commit description")'
torvalds#16: 
flag.  However, this flag was originally silently dropped by 1e98779

WARNING: line over 80 characters
torvalds#89: FILE: mm/nommu.c:179:
+static long __get_user_pages_unlocked(struct task_struct *tsk, struct mm_struct *mm,

WARNING: line over 80 characters
torvalds#90: FILE: mm/nommu.c:180:
+				      unsigned long start, unsigned long nr_pages,

WARNING: line over 80 characters
torvalds#91: FILE: mm/nommu.c:181:
+			              struct page **pages, unsigned int gup_flags)

ERROR: code indent should use tabs where possible
torvalds#91: FILE: mm/nommu.c:181:
+^I^I^I              struct page **pages, unsigned int gup_flags)$

total: 2 errors, 3 warnings, 116 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-unexport-__get_user_pages_unlocked.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: Lorenzo Stoakes <lstoakes@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
fengguang pushed a commit to 0day-ci/linux that referenced this pull request Dec 8, 2016
ERROR: Please use git commit description style 'commit <12+ chars of sha1> ("<title line>")' - ie: 'commit 0123456789ab ("commit description")'
torvalds#16:
flag.  However, this flag was originally silently dropped by 1e98779

WARNING: line over 80 characters
torvalds#89: FILE: mm/nommu.c:179:
+static long __get_user_pages_unlocked(struct task_struct *tsk, struct mm_struct *mm,

WARNING: line over 80 characters
torvalds#90: FILE: mm/nommu.c:180:
+				      unsigned long start, unsigned long nr_pages,

WARNING: line over 80 characters
torvalds#91: FILE: mm/nommu.c:181:
+			              struct page **pages, unsigned int gup_flags)

ERROR: code indent should use tabs where possible
torvalds#91: FILE: mm/nommu.c:181:
+^I^I^I              struct page **pages, unsigned int gup_flags)$

total: 2 errors, 3 warnings, 116 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-unexport-__get_user_pages_unlocked.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: Lorenzo Stoakes <lstoakes@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
fengguang pushed a commit to 0day-ci/linux that referenced this pull request Dec 10, 2016
ERROR: Please use git commit description style 'commit <12+ chars of sha1> ("<title line>")' - ie: 'commit 0123456789ab ("commit description")'
torvalds#16:
flag.  However, this flag was originally silently dropped by 1e98779

WARNING: line over 80 characters
torvalds#89: FILE: mm/nommu.c:179:
+static long __get_user_pages_unlocked(struct task_struct *tsk, struct mm_struct *mm,

WARNING: line over 80 characters
torvalds#90: FILE: mm/nommu.c:180:
+				      unsigned long start, unsigned long nr_pages,

WARNING: line over 80 characters
torvalds#91: FILE: mm/nommu.c:181:
+			              struct page **pages, unsigned int gup_flags)

ERROR: code indent should use tabs where possible
torvalds#91: FILE: mm/nommu.c:181:
+^I^I^I              struct page **pages, unsigned int gup_flags)$

total: 2 errors, 3 warnings, 116 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-unexport-__get_user_pages_unlocked.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: Lorenzo Stoakes <lstoakes@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
ammarfaizi2 pushed a commit to ammarfaizi2/linux-fork that referenced this pull request Oct 26, 2022
commit 1727fd5 upstream.

Current code produces a warning as shown below when total characters
in the constituent block device names plus the slashes exceeds 200.
snprintf() returns the number of characters generated from the given
input, which could cause the expression “200 – len” to wrap around
to a large positive number. Fix this by using scnprintf() instead,
which returns the actual number of characters written into the buffer.

[ 1513.267938] ------------[ cut here ]------------
[ 1513.267943] WARNING: CPU: 15 PID: 37247 at <snip>/lib/vsprintf.c:2509 vsnprintf+0x2c8/0x510
[ 1513.267944] Modules linked in:  <snip>
[ 1513.267969] CPU: 15 PID: 37247 Comm: mdadm Not tainted 5.4.0-1085-azure torvalds#90~18.04.1-Ubuntu
[ 1513.267969] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 05/09/2022
[ 1513.267971] RIP: 0010:vsnprintf+0x2c8/0x510
<-snip->
[ 1513.267982] Call Trace:
[ 1513.267986]  snprintf+0x45/0x70
[ 1513.267990]  ? disk_name+0x71/0xa0
[ 1513.267993]  dump_zones+0x114/0x240 [raid0]
[ 1513.267996]  ? _cond_resched+0x19/0x40
[ 1513.267998]  raid0_run+0x19e/0x270 [raid0]
[ 1513.268000]  md_run+0x5e0/0xc50
[ 1513.268003]  ? security_capable+0x3f/0x60
[ 1513.268005]  do_md_run+0x19/0x110
[ 1513.268006]  md_ioctl+0x195e/0x1f90
[ 1513.268007]  blkdev_ioctl+0x91f/0x9f0
[ 1513.268010]  block_ioctl+0x3d/0x50
[ 1513.268012]  do_vfs_ioctl+0xa9/0x640
[ 1513.268014]  ? __fput+0x162/0x260
[ 1513.268016]  ksys_ioctl+0x75/0x80
[ 1513.268017]  __x64_sys_ioctl+0x1a/0x20
[ 1513.268019]  do_syscall_64+0x5e/0x200
[ 1513.268021]  entry_SYSCALL_64_after_hwframe+0x44/0xa9

Fixes: 7660388 ("md/raid0: replace printk() with pr_*()")
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Acked-by: Guoqing Jiang <guoqing.jiang@linux.dev>
Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ammarfaizi2 pushed a commit to ammarfaizi2/linux-fork that referenced this pull request Oct 26, 2022
commit 1727fd5 upstream.

Current code produces a warning as shown below when total characters
in the constituent block device names plus the slashes exceeds 200.
snprintf() returns the number of characters generated from the given
input, which could cause the expression “200 – len” to wrap around
to a large positive number. Fix this by using scnprintf() instead,
which returns the actual number of characters written into the buffer.

[ 1513.267938] ------------[ cut here ]------------
[ 1513.267943] WARNING: CPU: 15 PID: 37247 at <snip>/lib/vsprintf.c:2509 vsnprintf+0x2c8/0x510
[ 1513.267944] Modules linked in:  <snip>
[ 1513.267969] CPU: 15 PID: 37247 Comm: mdadm Not tainted 5.4.0-1085-azure torvalds#90~18.04.1-Ubuntu
[ 1513.267969] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 05/09/2022
[ 1513.267971] RIP: 0010:vsnprintf+0x2c8/0x510
<-snip->
[ 1513.267982] Call Trace:
[ 1513.267986]  snprintf+0x45/0x70
[ 1513.267990]  ? disk_name+0x71/0xa0
[ 1513.267993]  dump_zones+0x114/0x240 [raid0]
[ 1513.267996]  ? _cond_resched+0x19/0x40
[ 1513.267998]  raid0_run+0x19e/0x270 [raid0]
[ 1513.268000]  md_run+0x5e0/0xc50
[ 1513.268003]  ? security_capable+0x3f/0x60
[ 1513.268005]  do_md_run+0x19/0x110
[ 1513.268006]  md_ioctl+0x195e/0x1f90
[ 1513.268007]  blkdev_ioctl+0x91f/0x9f0
[ 1513.268010]  block_ioctl+0x3d/0x50
[ 1513.268012]  do_vfs_ioctl+0xa9/0x640
[ 1513.268014]  ? __fput+0x162/0x260
[ 1513.268016]  ksys_ioctl+0x75/0x80
[ 1513.268017]  __x64_sys_ioctl+0x1a/0x20
[ 1513.268019]  do_syscall_64+0x5e/0x200
[ 1513.268021]  entry_SYSCALL_64_after_hwframe+0x44/0xa9

Fixes: 7660388 ("md/raid0: replace printk() with pr_*()")
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Acked-by: Guoqing Jiang <guoqing.jiang@linux.dev>
Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ammarfaizi2 pushed a commit to ammarfaizi2/linux-fork that referenced this pull request Oct 26, 2022
[ Upstream commit 1727fd5 ]

Current code produces a warning as shown below when total characters
in the constituent block device names plus the slashes exceeds 200.
snprintf() returns the number of characters generated from the given
input, which could cause the expression “200 – len” to wrap around
to a large positive number. Fix this by using scnprintf() instead,
which returns the actual number of characters written into the buffer.

[ 1513.267938] ------------[ cut here ]------------
[ 1513.267943] WARNING: CPU: 15 PID: 37247 at <snip>/lib/vsprintf.c:2509 vsnprintf+0x2c8/0x510
[ 1513.267944] Modules linked in:  <snip>
[ 1513.267969] CPU: 15 PID: 37247 Comm: mdadm Not tainted 5.4.0-1085-azure torvalds#90~18.04.1-Ubuntu
[ 1513.267969] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 05/09/2022
[ 1513.267971] RIP: 0010:vsnprintf+0x2c8/0x510
<-snip->
[ 1513.267982] Call Trace:
[ 1513.267986]  snprintf+0x45/0x70
[ 1513.267990]  ? disk_name+0x71/0xa0
[ 1513.267993]  dump_zones+0x114/0x240 [raid0]
[ 1513.267996]  ? _cond_resched+0x19/0x40
[ 1513.267998]  raid0_run+0x19e/0x270 [raid0]
[ 1513.268000]  md_run+0x5e0/0xc50
[ 1513.268003]  ? security_capable+0x3f/0x60
[ 1513.268005]  do_md_run+0x19/0x110
[ 1513.268006]  md_ioctl+0x195e/0x1f90
[ 1513.268007]  blkdev_ioctl+0x91f/0x9f0
[ 1513.268010]  block_ioctl+0x3d/0x50
[ 1513.268012]  do_vfs_ioctl+0xa9/0x640
[ 1513.268014]  ? __fput+0x162/0x260
[ 1513.268016]  ksys_ioctl+0x75/0x80
[ 1513.268017]  __x64_sys_ioctl+0x1a/0x20
[ 1513.268019]  do_syscall_64+0x5e/0x200
[ 1513.268021]  entry_SYSCALL_64_after_hwframe+0x44/0xa9

Fixes: 7660388 ("md/raid0: replace printk() with pr_*()")
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Acked-by: Guoqing Jiang <guoqing.jiang@linux.dev>
Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ammarfaizi2 pushed a commit to ammarfaizi2/linux-fork that referenced this pull request Oct 26, 2022
commit 1727fd5 upstream.

Current code produces a warning as shown below when total characters
in the constituent block device names plus the slashes exceeds 200.
snprintf() returns the number of characters generated from the given
input, which could cause the expression “200 – len” to wrap around
to a large positive number. Fix this by using scnprintf() instead,
which returns the actual number of characters written into the buffer.

[ 1513.267938] ------------[ cut here ]------------
[ 1513.267943] WARNING: CPU: 15 PID: 37247 at <snip>/lib/vsprintf.c:2509 vsnprintf+0x2c8/0x510
[ 1513.267944] Modules linked in:  <snip>
[ 1513.267969] CPU: 15 PID: 37247 Comm: mdadm Not tainted 5.4.0-1085-azure torvalds#90~18.04.1-Ubuntu
[ 1513.267969] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 05/09/2022
[ 1513.267971] RIP: 0010:vsnprintf+0x2c8/0x510
<-snip->
[ 1513.267982] Call Trace:
[ 1513.267986]  snprintf+0x45/0x70
[ 1513.267990]  ? disk_name+0x71/0xa0
[ 1513.267993]  dump_zones+0x114/0x240 [raid0]
[ 1513.267996]  ? _cond_resched+0x19/0x40
[ 1513.267998]  raid0_run+0x19e/0x270 [raid0]
[ 1513.268000]  md_run+0x5e0/0xc50
[ 1513.268003]  ? security_capable+0x3f/0x60
[ 1513.268005]  do_md_run+0x19/0x110
[ 1513.268006]  md_ioctl+0x195e/0x1f90
[ 1513.268007]  blkdev_ioctl+0x91f/0x9f0
[ 1513.268010]  block_ioctl+0x3d/0x50
[ 1513.268012]  do_vfs_ioctl+0xa9/0x640
[ 1513.268014]  ? __fput+0x162/0x260
[ 1513.268016]  ksys_ioctl+0x75/0x80
[ 1513.268017]  __x64_sys_ioctl+0x1a/0x20
[ 1513.268019]  do_syscall_64+0x5e/0x200
[ 1513.268021]  entry_SYSCALL_64_after_hwframe+0x44/0xa9

Fixes: 7660388 ("md/raid0: replace printk() with pr_*()")
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Acked-by: Guoqing Jiang <guoqing.jiang@linux.dev>
Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ammarfaizi2 pushed a commit to ammarfaizi2/linux-fork that referenced this pull request Oct 26, 2022
commit 1727fd5 upstream.

Current code produces a warning as shown below when total characters
in the constituent block device names plus the slashes exceeds 200.
snprintf() returns the number of characters generated from the given
input, which could cause the expression “200 – len” to wrap around
to a large positive number. Fix this by using scnprintf() instead,
which returns the actual number of characters written into the buffer.

[ 1513.267938] ------------[ cut here ]------------
[ 1513.267943] WARNING: CPU: 15 PID: 37247 at <snip>/lib/vsprintf.c:2509 vsnprintf+0x2c8/0x510
[ 1513.267944] Modules linked in:  <snip>
[ 1513.267969] CPU: 15 PID: 37247 Comm: mdadm Not tainted 5.4.0-1085-azure torvalds#90~18.04.1-Ubuntu
[ 1513.267969] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 05/09/2022
[ 1513.267971] RIP: 0010:vsnprintf+0x2c8/0x510
<-snip->
[ 1513.267982] Call Trace:
[ 1513.267986]  snprintf+0x45/0x70
[ 1513.267990]  ? disk_name+0x71/0xa0
[ 1513.267993]  dump_zones+0x114/0x240 [raid0]
[ 1513.267996]  ? _cond_resched+0x19/0x40
[ 1513.267998]  raid0_run+0x19e/0x270 [raid0]
[ 1513.268000]  md_run+0x5e0/0xc50
[ 1513.268003]  ? security_capable+0x3f/0x60
[ 1513.268005]  do_md_run+0x19/0x110
[ 1513.268006]  md_ioctl+0x195e/0x1f90
[ 1513.268007]  blkdev_ioctl+0x91f/0x9f0
[ 1513.268010]  block_ioctl+0x3d/0x50
[ 1513.268012]  do_vfs_ioctl+0xa9/0x640
[ 1513.268014]  ? __fput+0x162/0x260
[ 1513.268016]  ksys_ioctl+0x75/0x80
[ 1513.268017]  __x64_sys_ioctl+0x1a/0x20
[ 1513.268019]  do_syscall_64+0x5e/0x200
[ 1513.268021]  entry_SYSCALL_64_after_hwframe+0x44/0xa9

Fixes: 7660388 ("md/raid0: replace printk() with pr_*()")
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Acked-by: Guoqing Jiang <guoqing.jiang@linux.dev>
Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ammarfaizi2 pushed a commit to ammarfaizi2/linux-fork that referenced this pull request Oct 26, 2022
commit 1727fd5 upstream.

Current code produces a warning as shown below when total characters
in the constituent block device names plus the slashes exceeds 200.
snprintf() returns the number of characters generated from the given
input, which could cause the expression “200 – len” to wrap around
to a large positive number. Fix this by using scnprintf() instead,
which returns the actual number of characters written into the buffer.

[ 1513.267938] ------------[ cut here ]------------
[ 1513.267943] WARNING: CPU: 15 PID: 37247 at <snip>/lib/vsprintf.c:2509 vsnprintf+0x2c8/0x510
[ 1513.267944] Modules linked in:  <snip>
[ 1513.267969] CPU: 15 PID: 37247 Comm: mdadm Not tainted 5.4.0-1085-azure torvalds#90~18.04.1-Ubuntu
[ 1513.267969] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 05/09/2022
[ 1513.267971] RIP: 0010:vsnprintf+0x2c8/0x510
<-snip->
[ 1513.267982] Call Trace:
[ 1513.267986]  snprintf+0x45/0x70
[ 1513.267990]  ? disk_name+0x71/0xa0
[ 1513.267993]  dump_zones+0x114/0x240 [raid0]
[ 1513.267996]  ? _cond_resched+0x19/0x40
[ 1513.267998]  raid0_run+0x19e/0x270 [raid0]
[ 1513.268000]  md_run+0x5e0/0xc50
[ 1513.268003]  ? security_capable+0x3f/0x60
[ 1513.268005]  do_md_run+0x19/0x110
[ 1513.268006]  md_ioctl+0x195e/0x1f90
[ 1513.268007]  blkdev_ioctl+0x91f/0x9f0
[ 1513.268010]  block_ioctl+0x3d/0x50
[ 1513.268012]  do_vfs_ioctl+0xa9/0x640
[ 1513.268014]  ? __fput+0x162/0x260
[ 1513.268016]  ksys_ioctl+0x75/0x80
[ 1513.268017]  __x64_sys_ioctl+0x1a/0x20
[ 1513.268019]  do_syscall_64+0x5e/0x200
[ 1513.268021]  entry_SYSCALL_64_after_hwframe+0x44/0xa9

Fixes: 7660388 ("md/raid0: replace printk() with pr_*()")
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Acked-by: Guoqing Jiang <guoqing.jiang@linux.dev>
Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ammarfaizi2 pushed a commit to ammarfaizi2/linux-fork that referenced this pull request Oct 26, 2022
commit 1727fd5 upstream.

Current code produces a warning as shown below when total characters
in the constituent block device names plus the slashes exceeds 200.
snprintf() returns the number of characters generated from the given
input, which could cause the expression “200 – len” to wrap around
to a large positive number. Fix this by using scnprintf() instead,
which returns the actual number of characters written into the buffer.

[ 1513.267938] ------------[ cut here ]------------
[ 1513.267943] WARNING: CPU: 15 PID: 37247 at <snip>/lib/vsprintf.c:2509 vsnprintf+0x2c8/0x510
[ 1513.267944] Modules linked in:  <snip>
[ 1513.267969] CPU: 15 PID: 37247 Comm: mdadm Not tainted 5.4.0-1085-azure torvalds#90~18.04.1-Ubuntu
[ 1513.267969] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 05/09/2022
[ 1513.267971] RIP: 0010:vsnprintf+0x2c8/0x510
<-snip->
[ 1513.267982] Call Trace:
[ 1513.267986]  snprintf+0x45/0x70
[ 1513.267990]  ? disk_name+0x71/0xa0
[ 1513.267993]  dump_zones+0x114/0x240 [raid0]
[ 1513.267996]  ? _cond_resched+0x19/0x40
[ 1513.267998]  raid0_run+0x19e/0x270 [raid0]
[ 1513.268000]  md_run+0x5e0/0xc50
[ 1513.268003]  ? security_capable+0x3f/0x60
[ 1513.268005]  do_md_run+0x19/0x110
[ 1513.268006]  md_ioctl+0x195e/0x1f90
[ 1513.268007]  blkdev_ioctl+0x91f/0x9f0
[ 1513.268010]  block_ioctl+0x3d/0x50
[ 1513.268012]  do_vfs_ioctl+0xa9/0x640
[ 1513.268014]  ? __fput+0x162/0x260
[ 1513.268016]  ksys_ioctl+0x75/0x80
[ 1513.268017]  __x64_sys_ioctl+0x1a/0x20
[ 1513.268019]  do_syscall_64+0x5e/0x200
[ 1513.268021]  entry_SYSCALL_64_after_hwframe+0x44/0xa9

Fixes: 7660388 ("md/raid0: replace printk() with pr_*()")
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Acked-by: Guoqing Jiang <guoqing.jiang@linux.dev>
Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ammarfaizi2 pushed a commit to ammarfaizi2/linux-fork that referenced this pull request Oct 26, 2022
commit 1727fd5 upstream.

Current code produces a warning as shown below when total characters
in the constituent block device names plus the slashes exceeds 200.
snprintf() returns the number of characters generated from the given
input, which could cause the expression “200 – len” to wrap around
to a large positive number. Fix this by using scnprintf() instead,
which returns the actual number of characters written into the buffer.

[ 1513.267938] ------------[ cut here ]------------
[ 1513.267943] WARNING: CPU: 15 PID: 37247 at <snip>/lib/vsprintf.c:2509 vsnprintf+0x2c8/0x510
[ 1513.267944] Modules linked in:  <snip>
[ 1513.267969] CPU: 15 PID: 37247 Comm: mdadm Not tainted 5.4.0-1085-azure torvalds#90~18.04.1-Ubuntu
[ 1513.267969] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 05/09/2022
[ 1513.267971] RIP: 0010:vsnprintf+0x2c8/0x510
<-snip->
[ 1513.267982] Call Trace:
[ 1513.267986]  snprintf+0x45/0x70
[ 1513.267990]  ? disk_name+0x71/0xa0
[ 1513.267993]  dump_zones+0x114/0x240 [raid0]
[ 1513.267996]  ? _cond_resched+0x19/0x40
[ 1513.267998]  raid0_run+0x19e/0x270 [raid0]
[ 1513.268000]  md_run+0x5e0/0xc50
[ 1513.268003]  ? security_capable+0x3f/0x60
[ 1513.268005]  do_md_run+0x19/0x110
[ 1513.268006]  md_ioctl+0x195e/0x1f90
[ 1513.268007]  blkdev_ioctl+0x91f/0x9f0
[ 1513.268010]  block_ioctl+0x3d/0x50
[ 1513.268012]  do_vfs_ioctl+0xa9/0x640
[ 1513.268014]  ? __fput+0x162/0x260
[ 1513.268016]  ksys_ioctl+0x75/0x80
[ 1513.268017]  __x64_sys_ioctl+0x1a/0x20
[ 1513.268019]  do_syscall_64+0x5e/0x200
[ 1513.268021]  entry_SYSCALL_64_after_hwframe+0x44/0xa9

Fixes: 7660388 ("md/raid0: replace printk() with pr_*()")
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Acked-by: Guoqing Jiang <guoqing.jiang@linux.dev>
Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ammarfaizi2 pushed a commit to ammarfaizi2/linux-fork that referenced this pull request Oct 26, 2022
[ Upstream commit 1727fd5 ]

Current code produces a warning as shown below when total characters
in the constituent block device names plus the slashes exceeds 200.
snprintf() returns the number of characters generated from the given
input, which could cause the expression “200 – len” to wrap around
to a large positive number. Fix this by using scnprintf() instead,
which returns the actual number of characters written into the buffer.

[ 1513.267938] ------------[ cut here ]------------
[ 1513.267943] WARNING: CPU: 15 PID: 37247 at <snip>/lib/vsprintf.c:2509 vsnprintf+0x2c8/0x510
[ 1513.267944] Modules linked in:  <snip>
[ 1513.267969] CPU: 15 PID: 37247 Comm: mdadm Not tainted 5.4.0-1085-azure torvalds#90~18.04.1-Ubuntu
[ 1513.267969] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 05/09/2022
[ 1513.267971] RIP: 0010:vsnprintf+0x2c8/0x510
<-snip->
[ 1513.267982] Call Trace:
[ 1513.267986]  snprintf+0x45/0x70
[ 1513.267990]  ? disk_name+0x71/0xa0
[ 1513.267993]  dump_zones+0x114/0x240 [raid0]
[ 1513.267996]  ? _cond_resched+0x19/0x40
[ 1513.267998]  raid0_run+0x19e/0x270 [raid0]
[ 1513.268000]  md_run+0x5e0/0xc50
[ 1513.268003]  ? security_capable+0x3f/0x60
[ 1513.268005]  do_md_run+0x19/0x110
[ 1513.268006]  md_ioctl+0x195e/0x1f90
[ 1513.268007]  blkdev_ioctl+0x91f/0x9f0
[ 1513.268010]  block_ioctl+0x3d/0x50
[ 1513.268012]  do_vfs_ioctl+0xa9/0x640
[ 1513.268014]  ? __fput+0x162/0x260
[ 1513.268016]  ksys_ioctl+0x75/0x80
[ 1513.268017]  __x64_sys_ioctl+0x1a/0x20
[ 1513.268019]  do_syscall_64+0x5e/0x200
[ 1513.268021]  entry_SYSCALL_64_after_hwframe+0x44/0xa9

Fixes: 7660388 ("md/raid0: replace printk() with pr_*()")
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Acked-by: Guoqing Jiang <guoqing.jiang@linux.dev>
Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ammarfaizi2 pushed a commit to ammarfaizi2/linux-fork that referenced this pull request Oct 26, 2022
[ Upstream commit 1727fd5 ]

Current code produces a warning as shown below when total characters
in the constituent block device names plus the slashes exceeds 200.
snprintf() returns the number of characters generated from the given
input, which could cause the expression “200 – len” to wrap around
to a large positive number. Fix this by using scnprintf() instead,
which returns the actual number of characters written into the buffer.

[ 1513.267938] ------------[ cut here ]------------
[ 1513.267943] WARNING: CPU: 15 PID: 37247 at <snip>/lib/vsprintf.c:2509 vsnprintf+0x2c8/0x510
[ 1513.267944] Modules linked in:  <snip>
[ 1513.267969] CPU: 15 PID: 37247 Comm: mdadm Not tainted 5.4.0-1085-azure torvalds#90~18.04.1-Ubuntu
[ 1513.267969] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 05/09/2022
[ 1513.267971] RIP: 0010:vsnprintf+0x2c8/0x510
<-snip->
[ 1513.267982] Call Trace:
[ 1513.267986]  snprintf+0x45/0x70
[ 1513.267990]  ? disk_name+0x71/0xa0
[ 1513.267993]  dump_zones+0x114/0x240 [raid0]
[ 1513.267996]  ? _cond_resched+0x19/0x40
[ 1513.267998]  raid0_run+0x19e/0x270 [raid0]
[ 1513.268000]  md_run+0x5e0/0xc50
[ 1513.268003]  ? security_capable+0x3f/0x60
[ 1513.268005]  do_md_run+0x19/0x110
[ 1513.268006]  md_ioctl+0x195e/0x1f90
[ 1513.268007]  blkdev_ioctl+0x91f/0x9f0
[ 1513.268010]  block_ioctl+0x3d/0x50
[ 1513.268012]  do_vfs_ioctl+0xa9/0x640
[ 1513.268014]  ? __fput+0x162/0x260
[ 1513.268016]  ksys_ioctl+0x75/0x80
[ 1513.268017]  __x64_sys_ioctl+0x1a/0x20
[ 1513.268019]  do_syscall_64+0x5e/0x200
[ 1513.268021]  entry_SYSCALL_64_after_hwframe+0x44/0xa9

Fixes: 7660388 ("md/raid0: replace printk() with pr_*()")
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Acked-by: Guoqing Jiang <guoqing.jiang@linux.dev>
Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Noor-Ahsan pushed a commit to MentorEmbedded/linux-flex-polarfire that referenced this pull request Nov 24, 2022
[ Upstream commit 1727fd5 ]

Current code produces a warning as shown below when total characters
in the constituent block device names plus the slashes exceeds 200.
snprintf() returns the number of characters generated from the given
input, which could cause the expression “200 – len” to wrap around
to a large positive number. Fix this by using scnprintf() instead,
which returns the actual number of characters written into the buffer.

[ 1513.267938] ------------[ cut here ]------------
[ 1513.267943] WARNING: CPU: 15 PID: 37247 at <snip>/lib/vsprintf.c:2509 vsnprintf+0x2c8/0x510
[ 1513.267944] Modules linked in:  <snip>
[ 1513.267969] CPU: 15 PID: 37247 Comm: mdadm Not tainted 5.4.0-1085-azure torvalds#90~18.04.1-Ubuntu
[ 1513.267969] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 05/09/2022
[ 1513.267971] RIP: 0010:vsnprintf+0x2c8/0x510
<-snip->
[ 1513.267982] Call Trace:
[ 1513.267986]  snprintf+0x45/0x70
[ 1513.267990]  ? disk_name+0x71/0xa0
[ 1513.267993]  dump_zones+0x114/0x240 [raid0]
[ 1513.267996]  ? _cond_resched+0x19/0x40
[ 1513.267998]  raid0_run+0x19e/0x270 [raid0]
[ 1513.268000]  md_run+0x5e0/0xc50
[ 1513.268003]  ? security_capable+0x3f/0x60
[ 1513.268005]  do_md_run+0x19/0x110
[ 1513.268006]  md_ioctl+0x195e/0x1f90
[ 1513.268007]  blkdev_ioctl+0x91f/0x9f0
[ 1513.268010]  block_ioctl+0x3d/0x50
[ 1513.268012]  do_vfs_ioctl+0xa9/0x640
[ 1513.268014]  ? __fput+0x162/0x260
[ 1513.268016]  ksys_ioctl+0x75/0x80
[ 1513.268017]  __x64_sys_ioctl+0x1a/0x20
[ 1513.268019]  do_syscall_64+0x5e/0x200
[ 1513.268021]  entry_SYSCALL_64_after_hwframe+0x44/0xa9

Fixes: 7660388 ("md/raid0: replace printk() with pr_*()")
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Acked-by: Guoqing Jiang <guoqing.jiang@linux.dev>
Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
ammarfaizi2 pushed a commit to ammarfaizi2/linux-fork that referenced this pull request Feb 1, 2023
If we bring up secondaries in parallel they might get confused unless we
impose some ordering here:

[    1.360149] x86: Booting SMP configuration:
[    1.360221] .... node  #0, CPUs:        #1  #2  #3  #4  #5  torvalds#6  torvalds#7  torvalds#8  torvalds#9 torvalds#10 torvalds#11 torvalds#12 torvalds#13 torvalds#14 torvalds#15 torvalds#16 torvalds#17 torvalds#18 torvalds#19 torvalds#20 torvalds#21 torvalds#22 torvalds#23
[    1.366225] .... node  #1, CPUs:   torvalds#24 torvalds#25 torvalds#26 torvalds#27 torvalds#28 torvalds#29 torvalds#30 torvalds#31 torvalds#32 torvalds#33 torvalds#34 torvalds#35 torvalds#36 torvalds#37 torvalds#38 torvalds#39 torvalds#40 torvalds#41 torvalds#42 torvalds#43 torvalds#44 torvalds#45 torvalds#46 torvalds#47
[    1.370219] .... node  #0, CPUs:   torvalds#48 torvalds#49 torvalds#50 torvalds#51 #52 #53 torvalds#54 torvalds#55 torvalds#56 torvalds#57 #58 torvalds#59 torvalds#60 torvalds#61 torvalds#62 torvalds#63 torvalds#64 torvalds#65 torvalds#66 torvalds#67 torvalds#68 torvalds#69 #70 torvalds#71
[    1.378226] .... node  #1, CPUs:   torvalds#72 torvalds#73 torvalds#74 torvalds#75 torvalds#76 torvalds#77 torvalds#78 torvalds#79 torvalds#80 torvalds#81 torvalds#82 torvalds#83 torvalds#84 torvalds#85 torvalds#86 torvalds#87 torvalds#88 torvalds#89 torvalds#90 torvalds#91 torvalds#92 torvalds#93 torvalds#94 torvalds#95
[    1.382037] Brought 96 CPUs to x86/cpu:kick in 72232606 cycles
[    0.104104] smpboot: CPU 26 Converting physical 0 to logical die 1
[    0.104104] smpboot: CPU 27 Converting physical 1 to logical package 2
[    0.104104] smpboot: CPU 24 Converting physical 1 to logical package 3
[    0.104104] smpboot: CPU 27 Converting physical 0 to logical die 2
[    0.104104] smpboot: CPU 25 Converting physical 1 to logical package 4
[    1.385609] Brought 96 CPUs to x86/cpu:wait-init in 9269218 cycles
[    1.395285] Brought CPUs online in 28930764 cycles
[    1.395469] smp: Brought up 2 nodes, 96 CPUs
[    1.395689] smpboot: Max logical packages: 2
[    1.396222] smpboot: Total of 96 processors activated (576000.00 BogoMIPS)

Do the full topology update in smp_store_cpu_info() under a spinlock
to ensure that things remain consistent.

[Usama Arif: fixed rebase conflict]
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Usama Arif <usama.arif@bytedance.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
ammarfaizi2 pushed a commit to ammarfaizi2/linux-fork that referenced this pull request Feb 8, 2023
The toplogy update is performed by the AP via smp_callin() after the BSP
has called do_wait_cpu_initialized(), setting the AP's bit in
cpu_callout_mask to allow it to proceed.

In preparation to enable further parallelism of AP bringup, add locking to
serialize the update even if multiple APs are (in future) permitted to
proceed through the next stages of bringup in parallel.

Without such ordering (and with that future extra parallelism), confusion
ensues:

[    1.360149] x86: Booting SMP configuration:
[    1.360221] .... node  #0, CPUs:        #1  #2  #3  #4  #5  torvalds#6  torvalds#7  torvalds#8  torvalds#9 torvalds#10 torvalds#11 torvalds#12 torvalds#13 torvalds#14 torvalds#15 torvalds#16 torvalds#17 torvalds#18 torvalds#19 torvalds#20 torvalds#21 torvalds#22 torvalds#23
[    1.366225] .... node  #1, CPUs:   torvalds#24 torvalds#25 torvalds#26 torvalds#27 torvalds#28 torvalds#29 torvalds#30 torvalds#31 torvalds#32 torvalds#33 torvalds#34 torvalds#35 torvalds#36 torvalds#37 torvalds#38 torvalds#39 torvalds#40 torvalds#41 torvalds#42 torvalds#43 torvalds#44 torvalds#45 torvalds#46 torvalds#47
[    1.370219] .... node  #0, CPUs:   torvalds#48 torvalds#49 torvalds#50 torvalds#51 #52 #53 torvalds#54 torvalds#55 torvalds#56 torvalds#57 #58 torvalds#59 torvalds#60 torvalds#61 torvalds#62 torvalds#63 torvalds#64 torvalds#65 torvalds#66 torvalds#67 torvalds#68 torvalds#69 #70 torvalds#71
[    1.378226] .... node  #1, CPUs:   torvalds#72 torvalds#73 torvalds#74 torvalds#75 torvalds#76 torvalds#77 torvalds#78 torvalds#79 torvalds#80 torvalds#81 torvalds#82 torvalds#83 torvalds#84 torvalds#85 torvalds#86 torvalds#87 torvalds#88 torvalds#89 torvalds#90 torvalds#91 torvalds#92 torvalds#93 torvalds#94 torvalds#95
[    1.382037] Brought 96 CPUs to x86/cpu:kick in 72232606 cycles
[    0.104104] smpboot: CPU 26 Converting physical 0 to logical die 1
[    0.104104] smpboot: CPU 27 Converting physical 1 to logical package 2
[    0.104104] smpboot: CPU 24 Converting physical 1 to logical package 3
[    0.104104] smpboot: CPU 27 Converting physical 0 to logical die 2
[    0.104104] smpboot: CPU 25 Converting physical 1 to logical package 4
[    1.385609] Brought 96 CPUs to x86/cpu:wait-init in 9269218 cycles
[    1.395285] Brought CPUs online in 28930764 cycles
[    1.395469] smp: Brought up 2 nodes, 96 CPUs
[    1.395689] smpboot: Max logical packages: 2
[    1.396222] smpboot: Total of 96 processors activated (576000.00 BogoMIPS)

[Usama Arif: fixed rebase conflict]
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Usama Arif <usama.arif@bytedance.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
ammarfaizi2 pushed a commit to ammarfaizi2/linux-fork that referenced this pull request Feb 9, 2023
The toplogy update is performed by the AP via smp_callin() after the BSP
has called do_wait_cpu_initialized(), setting the AP's bit in
cpu_callout_mask to allow it to proceed.

In preparation to enable further parallelism of AP bringup, add locking to
serialize the update even if multiple APs are (in future) permitted to
proceed through the next stages of bringup in parallel.

Without such ordering (and with that future extra parallelism), confusion
ensues:

[    1.360149] x86: Booting SMP configuration:
[    1.360221] .... node  #0, CPUs:        #1  #2  #3  #4  #5  torvalds#6  torvalds#7  torvalds#8  torvalds#9 torvalds#10 torvalds#11 torvalds#12 torvalds#13 torvalds#14 torvalds#15 torvalds#16 torvalds#17 torvalds#18 torvalds#19 torvalds#20 torvalds#21 torvalds#22 torvalds#23
[    1.366225] .... node  #1, CPUs:   torvalds#24 torvalds#25 torvalds#26 torvalds#27 torvalds#28 torvalds#29 torvalds#30 torvalds#31 torvalds#32 torvalds#33 torvalds#34 torvalds#35 torvalds#36 torvalds#37 torvalds#38 torvalds#39 torvalds#40 torvalds#41 torvalds#42 torvalds#43 torvalds#44 torvalds#45 torvalds#46 torvalds#47
[    1.370219] .... node  #0, CPUs:   torvalds#48 torvalds#49 torvalds#50 torvalds#51 #52 #53 torvalds#54 torvalds#55 torvalds#56 torvalds#57 #58 torvalds#59 torvalds#60 torvalds#61 torvalds#62 torvalds#63 torvalds#64 torvalds#65 torvalds#66 torvalds#67 torvalds#68 torvalds#69 #70 torvalds#71
[    1.378226] .... node  #1, CPUs:   torvalds#72 torvalds#73 torvalds#74 torvalds#75 torvalds#76 torvalds#77 torvalds#78 torvalds#79 torvalds#80 torvalds#81 torvalds#82 torvalds#83 torvalds#84 torvalds#85 torvalds#86 torvalds#87 torvalds#88 torvalds#89 torvalds#90 torvalds#91 torvalds#92 torvalds#93 torvalds#94 torvalds#95
[    1.382037] Brought 96 CPUs to x86/cpu:kick in 72232606 cycles
[    0.104104] smpboot: CPU 26 Converting physical 0 to logical die 1
[    0.104104] smpboot: CPU 27 Converting physical 1 to logical package 2
[    0.104104] smpboot: CPU 24 Converting physical 1 to logical package 3
[    0.104104] smpboot: CPU 27 Converting physical 0 to logical die 2
[    0.104104] smpboot: CPU 25 Converting physical 1 to logical package 4
[    1.385609] Brought 96 CPUs to x86/cpu:wait-init in 9269218 cycles
[    1.395285] Brought CPUs online in 28930764 cycles
[    1.395469] smp: Brought up 2 nodes, 96 CPUs
[    1.395689] smpboot: Max logical packages: 2
[    1.396222] smpboot: Total of 96 processors activated (576000.00 BogoMIPS)

[Usama Arif: fixed rebase conflict]
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Usama Arif <usama.arif@bytedance.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
ammarfaizi2 pushed a commit to ammarfaizi2/linux-fork that referenced this pull request Feb 15, 2023
The toplogy update is performed by the AP via smp_callin() after the BSP
has called do_wait_cpu_initialized(), setting the AP's bit in
cpu_callout_mask to allow it to proceed.

In preparation to enable further parallelism of AP bringup, add locking to
serialize the update even if multiple APs are (in future) permitted to
proceed through the next stages of bringup in parallel.

Without such ordering (and with that future extra parallelism), confusion
ensues:

[    1.360149] x86: Booting SMP configuration:
[    1.360221] .... node  #0, CPUs:        #1  #2  #3  #4  #5  torvalds#6  torvalds#7  torvalds#8  torvalds#9 torvalds#10 torvalds#11 torvalds#12 torvalds#13 torvalds#14 torvalds#15 torvalds#16 torvalds#17 torvalds#18 torvalds#19 torvalds#20 torvalds#21 torvalds#22 torvalds#23
[    1.366225] .... node  #1, CPUs:   torvalds#24 torvalds#25 torvalds#26 torvalds#27 torvalds#28 torvalds#29 torvalds#30 torvalds#31 torvalds#32 torvalds#33 torvalds#34 torvalds#35 torvalds#36 torvalds#37 torvalds#38 torvalds#39 torvalds#40 torvalds#41 torvalds#42 torvalds#43 torvalds#44 torvalds#45 torvalds#46 torvalds#47
[    1.370219] .... node  #0, CPUs:   torvalds#48 torvalds#49 torvalds#50 torvalds#51 #52 #53 torvalds#54 torvalds#55 torvalds#56 torvalds#57 #58 torvalds#59 torvalds#60 torvalds#61 torvalds#62 torvalds#63 torvalds#64 torvalds#65 torvalds#66 torvalds#67 torvalds#68 torvalds#69 #70 torvalds#71
[    1.378226] .... node  #1, CPUs:   torvalds#72 torvalds#73 torvalds#74 torvalds#75 torvalds#76 torvalds#77 torvalds#78 torvalds#79 torvalds#80 torvalds#81 torvalds#82 torvalds#83 torvalds#84 torvalds#85 torvalds#86 torvalds#87 torvalds#88 torvalds#89 torvalds#90 torvalds#91 torvalds#92 torvalds#93 torvalds#94 torvalds#95
[    1.382037] Brought 96 CPUs to x86/cpu:kick in 72232606 cycles
[    0.104104] smpboot: CPU 26 Converting physical 0 to logical die 1
[    0.104104] smpboot: CPU 27 Converting physical 1 to logical package 2
[    0.104104] smpboot: CPU 24 Converting physical 1 to logical package 3
[    0.104104] smpboot: CPU 27 Converting physical 0 to logical die 2
[    0.104104] smpboot: CPU 25 Converting physical 1 to logical package 4
[    1.385609] Brought 96 CPUs to x86/cpu:wait-init in 9269218 cycles
[    1.395285] Brought CPUs online in 28930764 cycles
[    1.395469] smp: Brought up 2 nodes, 96 CPUs
[    1.395689] smpboot: Max logical packages: 2
[    1.396222] smpboot: Total of 96 processors activated (576000.00 BogoMIPS)

[Usama Arif: fixed rebase conflict]
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Usama Arif <usama.arif@bytedance.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
sirlucjan pushed a commit to CachyOS/linux that referenced this pull request Feb 16, 2023
The toplogy update is performed by the AP via smp_callin() after the BSP
has called do_wait_cpu_initialized(), setting the AP's bit in
cpu_callout_mask to allow it to proceed.

In preparation to enable further parallelism of AP bringup, add locking to
serialize the update even if multiple APs are (in future) permitted to
proceed through the next stages of bringup in parallel.

Without such ordering (and with that future extra parallelism), confusion
ensues:

[    1.360149] x86: Booting SMP configuration:
[    1.360221] .... node  #0, CPUs:        #1  #2  #3  #4  #5  torvalds#6  torvalds#7  torvalds#8  torvalds#9 torvalds#10 torvalds#11 torvalds#12 torvalds#13 torvalds#14 torvalds#15 torvalds#16 torvalds#17 torvalds#18 torvalds#19 torvalds#20 torvalds#21 torvalds#22 torvalds#23
[    1.366225] .... node  #1, CPUs:   torvalds#24 torvalds#25 torvalds#26 torvalds#27 torvalds#28 torvalds#29 torvalds#30 torvalds#31 torvalds#32 torvalds#33 torvalds#34 torvalds#35 torvalds#36 torvalds#37 torvalds#38 torvalds#39 torvalds#40 torvalds#41 torvalds#42 torvalds#43 torvalds#44 torvalds#45 torvalds#46 torvalds#47
[    1.370219] .... node  #0, CPUs:   torvalds#48 torvalds#49 torvalds#50 torvalds#51 #52 #53 torvalds#54 torvalds#55 torvalds#56 torvalds#57 #58 torvalds#59 torvalds#60 torvalds#61 torvalds#62 torvalds#63 torvalds#64 torvalds#65 torvalds#66 torvalds#67 torvalds#68 torvalds#69 #70 torvalds#71
[    1.378226] .... node  #1, CPUs:   torvalds#72 torvalds#73 torvalds#74 torvalds#75 torvalds#76 torvalds#77 torvalds#78 torvalds#79 torvalds#80 torvalds#81 torvalds#82 torvalds#83 torvalds#84 torvalds#85 torvalds#86 torvalds#87 torvalds#88 torvalds#89 torvalds#90 torvalds#91 torvalds#92 torvalds#93 torvalds#94 torvalds#95
[    1.382037] Brought 96 CPUs to x86/cpu:kick in 72232606 cycles
[    0.104104] smpboot: CPU 26 Converting physical 0 to logical die 1
[    0.104104] smpboot: CPU 27 Converting physical 1 to logical package 2
[    0.104104] smpboot: CPU 24 Converting physical 1 to logical package 3
[    0.104104] smpboot: CPU 27 Converting physical 0 to logical die 2
[    0.104104] smpboot: CPU 25 Converting physical 1 to logical package 4
[    1.385609] Brought 96 CPUs to x86/cpu:wait-init in 9269218 cycles
[    1.395285] Brought CPUs online in 28930764 cycles
[    1.395469] smp: Brought up 2 nodes, 96 CPUs
[    1.395689] smpboot: Max logical packages: 2
[    1.396222] smpboot: Total of 96 processors activated (576000.00 BogoMIPS)

[Usama Arif: fixed rebase conflict]

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Usama Arif <usama.arif@bytedance.com>
intel-lab-lkp pushed a commit to intel-lab-lkp/linux that referenced this pull request Dec 11, 2023
`fs_kfuncs.c`'s `test_xattr` would fail the test even when the
filesystem did not support xattr, for instance when /tmp is mounted as
tmpfs.

This change checks errno when setxattr fail. If the failure is due to
the operation being unsupported, we will skip the test (just like we
would if verity was not enabled on the FS.

Before the change, fs_kfuncs test would fail in test_axattr:

 $ vmtest -k $(make -s image_name) './tools/testing/selftests/bpf/test_progs -a fs_kfuncs'
 => bzImage
 ===> Booting
 [    0.000000] rcu:        RCU restricting CPUs from NR_CPUS=128 to
 nr_cpu_
 ===> Setting up VM
 ===> Running command
 [    4.157491] bpf_testmod: loading out-of-tree module taints kernel.
 [    4.161515] bpf_testmod: module verification failed: signature and/or
 required key missing - tainting kernel
 test_xattr:PASS:create_file 0 nsec
 test_xattr:FAIL:setxattr unexpected error: -1 (errno 95)
 torvalds#90/1    fs_kfuncs/xattr:FAIL
 torvalds#90/2    fs_kfuncs/fsverity:SKIP
 torvalds#90      fs_kfuncs:FAIL

 All error logs:
 test_xattr:PASS:create_file 0 nsec
 test_xattr:FAIL:setxattr unexpected error: -1 (errno 95)
 torvalds#90/1    fs_kfuncs/xattr:FAIL
 torvalds#90      fs_kfuncs:FAIL

 Summary: 0/0 PASSED, 1 SKIPPED, 1 FAILED

Test plan:

  $ touch tmpfs_file && truncate -s 1G tmpfs_file && mkfs.ext4 tmpfs_file
  # /tmp mounted as tmpfs
  $ vmtest -k $(make -s image_name) './tools/testing/selftests/bpf/test_progs -a fs_kfuncs'
  => bzImage
  ===> Booting
  ===> Setting up VM
  ===> Running command
  WARNING! Selftests relying on bpf_testmod.ko will be skipped.
  Can't find bpf_testmod.ko kernel module: -2
  torvalds#90/1    fs_kfuncs/xattr:SKIP
  torvalds#90/2    fs_kfuncs/fsverity:SKIP
  torvalds#90      fs_kfuncs:SKIP
  Summary: 1/0 PASSED, 2 SKIPPED, 0 FAILED
  # /tmp mounted as ext4 with xattr enabled but not verity
  $ vmtest -k $(make -s image_name) 'mount -o loop tmpfs_file /tmp && \
    /tools/testing/selftests/bpf/test_progs -a fs_kfuncs'
  => bzImage
  ===> Booting
  ===> Setting up VM
  ===> Running command
  [    4.067071] loop0: detected capacity change from 0 to 2097152
  [    4.191882] EXT4-fs (loop0): mounted filesystem
  407ffa36-4553-4c8c-8c78-134443630f69 r/w with ordered data mode. Quota
  mode: none.
  WARNING! Selftests relying on bpf_testmod.ko will be skipped.
  Can't find bpf_testmod.ko kernel module: -2
  torvalds#90/1    fs_kfuncs/xattr:OK
  torvalds#90/2    fs_kfuncs/fsverity:SKIP
  torvalds#90      fs_kfuncs:OK (SKIP: 1/2)
  Summary: 1/1 PASSED, 1 SKIPPED, 0 FAILED
  $ tune2fs -O verity tmpfs_file
  # /tmp as ext4 with both xattr and verity enabled
  $ vmtest -k $(make -s image_name) 'mount -o loop tmpfs_file /tmp && \
    ./tools/testing/selftests/bpf/test_progs -a fs_kfuncs'
  => bzImage
  ===> Booting
  ===> Setting up VM
  ===> Running command
  [    4.291434] loop0: detected capacity change from 0 to 2097152
  [    4.460828] EXT4-fs (loop0): recovery complete
  [    4.468631] EXT4-fs (loop0): mounted filesystem
  7b4a7b7f-c442-4b06-9ede-254e63cceb52 r/w with ordered data mode. Quota
  mode: none.
  [    4.988074] fs-verity: sha256 using implementation "sha256-generic"
  WARNING! Selftests relying on bpf_testmod.ko will be skipped.
  Can't find bpf_testmod.ko kernel module: -2
  torvalds#90/1    fs_kfuncs/xattr:OK
  torvalds#90/2    fs_kfuncs/fsverity:OK
  torvalds#90      fs_kfuncs:OK
  Summary: 1/2 PASSED, 0 SKIPPED, 0 FAILED

Fixes: 341f06f ("selftests/bpf: Add tests for filesystem kfuncs")
Signed-off-by: Manu Bretelle <chantr4@gmail.com>
danobi pushed a commit to danobi/linux that referenced this pull request Dec 12, 2023
`fs_kfuncs.c`'s `test_xattr` would fail the test even when the
filesystem did not support xattr, for instance when /tmp is mounted as
tmpfs.

This change checks errno when setxattr fail. If the failure is due to
the operation being unsupported, we will skip the test (just like we
would if verity was not enabled on the FS.

Before the change, fs_kfuncs test would fail in test_axattr:

 $ vmtest -k $(make -s image_name) './tools/testing/selftests/bpf/test_progs -a fs_kfuncs'
 => bzImage
 ===> Booting
 [    0.000000] rcu:        RCU restricting CPUs from NR_CPUS=128 to
 nr_cpu_
 ===> Setting up VM
 ===> Running command
 [    4.157491] bpf_testmod: loading out-of-tree module taints kernel.
 [    4.161515] bpf_testmod: module verification failed: signature and/or
 required key missing - tainting kernel
 test_xattr:PASS:create_file 0 nsec
 test_xattr:FAIL:setxattr unexpected error: -1 (errno 95)
 torvalds#90/1    fs_kfuncs/xattr:FAIL
 torvalds#90/2    fs_kfuncs/fsverity:SKIP
 torvalds#90      fs_kfuncs:FAIL

 All error logs:
 test_xattr:PASS:create_file 0 nsec
 test_xattr:FAIL:setxattr unexpected error: -1 (errno 95)
 torvalds#90/1    fs_kfuncs/xattr:FAIL
 torvalds#90      fs_kfuncs:FAIL

 Summary: 0/0 PASSED, 1 SKIPPED, 1 FAILED

Test plan:

  $ touch tmpfs_file && truncate -s 1G tmpfs_file && mkfs.ext4 tmpfs_file
  # /tmp mounted as tmpfs
  $ vmtest -k $(make -s image_name) './tools/testing/selftests/bpf/test_progs -a fs_kfuncs'
  => bzImage
  ===> Booting
  ===> Setting up VM
  ===> Running command
  WARNING! Selftests relying on bpf_testmod.ko will be skipped.
  Can't find bpf_testmod.ko kernel module: -2
  torvalds#90/1    fs_kfuncs/xattr:SKIP
  torvalds#90/2    fs_kfuncs/fsverity:SKIP
  torvalds#90      fs_kfuncs:SKIP
  Summary: 1/0 PASSED, 2 SKIPPED, 0 FAILED
  # /tmp mounted as ext4 with xattr enabled but not verity
  $ vmtest -k $(make -s image_name) 'mount -o loop tmpfs_file /tmp && \
    /tools/testing/selftests/bpf/test_progs -a fs_kfuncs'
  => bzImage
  ===> Booting
  ===> Setting up VM
  ===> Running command
  [    4.067071] loop0: detected capacity change from 0 to 2097152
  [    4.191882] EXT4-fs (loop0): mounted filesystem
  407ffa36-4553-4c8c-8c78-134443630f69 r/w with ordered data mode. Quota
  mode: none.
  WARNING! Selftests relying on bpf_testmod.ko will be skipped.
  Can't find bpf_testmod.ko kernel module: -2
  torvalds#90/1    fs_kfuncs/xattr:OK
  torvalds#90/2    fs_kfuncs/fsverity:SKIP
  torvalds#90      fs_kfuncs:OK (SKIP: 1/2)
  Summary: 1/1 PASSED, 1 SKIPPED, 0 FAILED
  $ tune2fs -O verity tmpfs_file
  # /tmp as ext4 with both xattr and verity enabled
  $ vmtest -k $(make -s image_name) 'mount -o loop tmpfs_file /tmp && \
    ./tools/testing/selftests/bpf/test_progs -a fs_kfuncs'
  => bzImage
  ===> Booting
  ===> Setting up VM
  ===> Running command
  [    4.291434] loop0: detected capacity change from 0 to 2097152
  [    4.460828] EXT4-fs (loop0): recovery complete
  [    4.468631] EXT4-fs (loop0): mounted filesystem
  7b4a7b7f-c442-4b06-9ede-254e63cceb52 r/w with ordered data mode. Quota
  mode: none.
  [    4.988074] fs-verity: sha256 using implementation "sha256-generic"
  WARNING! Selftests relying on bpf_testmod.ko will be skipped.
  Can't find bpf_testmod.ko kernel module: -2
  torvalds#90/1    fs_kfuncs/xattr:OK
  torvalds#90/2    fs_kfuncs/fsverity:OK
  torvalds#90      fs_kfuncs:OK
  Summary: 1/2 PASSED, 0 SKIPPED, 0 FAILED

Fixes: 341f06f ("selftests/bpf: Add tests for filesystem kfuncs")
Signed-off-by: Manu Bretelle <chantr4@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20231211180733.763025-1-chantr4@gmail.com
anakryiko pushed a commit to anakryiko/linux that referenced this pull request Dec 19, 2023
`fs_kfuncs.c`'s `test_xattr` would fail the test even when the
filesystem did not support xattr, for instance when /tmp is mounted as
tmpfs.

This change checks errno when setxattr fail. If the failure is due to
the operation being unsupported, we will skip the test (just like we
would if verity was not enabled on the FS.

Before the change, fs_kfuncs test would fail in test_axattr:

 $ vmtest -k $(make -s image_name) './tools/testing/selftests/bpf/test_progs -a fs_kfuncs'
 => bzImage
 ===> Booting
 [    0.000000] rcu:        RCU restricting CPUs from NR_CPUS=128 to
 nr_cpu_
 ===> Setting up VM
 ===> Running command
 [    4.157491] bpf_testmod: loading out-of-tree module taints kernel.
 [    4.161515] bpf_testmod: module verification failed: signature and/or
 required key missing - tainting kernel
 test_xattr:PASS:create_file 0 nsec
 test_xattr:FAIL:setxattr unexpected error: -1 (errno 95)
 torvalds#90/1    fs_kfuncs/xattr:FAIL
 torvalds#90/2    fs_kfuncs/fsverity:SKIP
 torvalds#90      fs_kfuncs:FAIL

 All error logs:
 test_xattr:PASS:create_file 0 nsec
 test_xattr:FAIL:setxattr unexpected error: -1 (errno 95)
 torvalds#90/1    fs_kfuncs/xattr:FAIL
 torvalds#90      fs_kfuncs:FAIL

 Summary: 0/0 PASSED, 1 SKIPPED, 1 FAILED

Test plan:

  $ touch tmpfs_file && truncate -s 1G tmpfs_file && mkfs.ext4 tmpfs_file
  # /tmp mounted as tmpfs
  $ vmtest -k $(make -s image_name) './tools/testing/selftests/bpf/test_progs -a fs_kfuncs'
  => bzImage
  ===> Booting
  ===> Setting up VM
  ===> Running command
  WARNING! Selftests relying on bpf_testmod.ko will be skipped.
  Can't find bpf_testmod.ko kernel module: -2
  torvalds#90/1    fs_kfuncs/xattr:SKIP
  torvalds#90/2    fs_kfuncs/fsverity:SKIP
  torvalds#90      fs_kfuncs:SKIP
  Summary: 1/0 PASSED, 2 SKIPPED, 0 FAILED
  # /tmp mounted as ext4 with xattr enabled but not verity
  $ vmtest -k $(make -s image_name) 'mount -o loop tmpfs_file /tmp && \
    /tools/testing/selftests/bpf/test_progs -a fs_kfuncs'
  => bzImage
  ===> Booting
  ===> Setting up VM
  ===> Running command
  [    4.067071] loop0: detected capacity change from 0 to 2097152
  [    4.191882] EXT4-fs (loop0): mounted filesystem
  407ffa36-4553-4c8c-8c78-134443630f69 r/w with ordered data mode. Quota
  mode: none.
  WARNING! Selftests relying on bpf_testmod.ko will be skipped.
  Can't find bpf_testmod.ko kernel module: -2
  torvalds#90/1    fs_kfuncs/xattr:OK
  torvalds#90/2    fs_kfuncs/fsverity:SKIP
  torvalds#90      fs_kfuncs:OK (SKIP: 1/2)
  Summary: 1/1 PASSED, 1 SKIPPED, 0 FAILED
  $ tune2fs -O verity tmpfs_file
  # /tmp as ext4 with both xattr and verity enabled
  $ vmtest -k $(make -s image_name) 'mount -o loop tmpfs_file /tmp && \
    ./tools/testing/selftests/bpf/test_progs -a fs_kfuncs'
  => bzImage
  ===> Booting
  ===> Setting up VM
  ===> Running command
  [    4.291434] loop0: detected capacity change from 0 to 2097152
  [    4.460828] EXT4-fs (loop0): recovery complete
  [    4.468631] EXT4-fs (loop0): mounted filesystem
  7b4a7b7f-c442-4b06-9ede-254e63cceb52 r/w with ordered data mode. Quota
  mode: none.
  [    4.988074] fs-verity: sha256 using implementation "sha256-generic"
  WARNING! Selftests relying on bpf_testmod.ko will be skipped.
  Can't find bpf_testmod.ko kernel module: -2
  torvalds#90/1    fs_kfuncs/xattr:OK
  torvalds#90/2    fs_kfuncs/fsverity:OK
  torvalds#90      fs_kfuncs:OK
  Summary: 1/2 PASSED, 0 SKIPPED, 0 FAILED

Fixes: 341f06f ("selftests/bpf: Add tests for filesystem kfuncs")
Signed-off-by: Manu Bretelle <chantr4@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20231211180733.763025-1-chantr4@gmail.com
roxell pushed a commit to roxell/linux that referenced this pull request Jan 17, 2024
bch_fs::snapshots is allocated by kvzalloc in __snapshot_t_mut.
It should be freed by kvfree not kfree.
Or umount will triger:

[  406.829178 ] BUG: unable to handle page fault for address: ffffe7b487148008
[  406.830676 ] #PF: supervisor read access in kernel mode
[  406.831643 ] #PF: error_code(0x0000) - not-present page
[  406.832487 ] PGD 0 P4D 0
[  406.832898 ] Oops: 0000 [#1] PREEMPT SMP PTI
[  406.833512 ] CPU: 2 PID: 1754 Comm: umount Kdump: loaded Tainted: G           OE      6.7.0-rc7-custom+ torvalds#90
[  406.834746 ] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Arch Linux 1.16.3-1-1 04/01/2014
[  406.835796 ] RIP: 0010:kfree+0x62/0x140
[  406.836197 ] Code: 80 48 01 d8 0f 82 e9 00 00 00 48 c7 c2 00 00 00 80 48 2b 15 78 9f 1f 01 48 01 d0 48 c1 e8 0c 48 c1 e0 06 48 03 05 56 9f 1f 01 <48> 8b 50 08 48 89 c7 f6 c2 01 0f 85 b0 00 00 00 66 90 48 8b 07 f6
[  406.837810 ] RSP: 0018:ffffb9d641607e48 EFLAGS: 00010286
[  406.838213 ] RAX: ffffe7b487148000 RBX: ffffb9d645200000 RCX: ffffb9d641607dc4
[  406.838738 ] RDX: 000065bb00000000 RSI: ffffffffc0d88b84 RDI: ffffb9d645200000
[  406.839217 ] RBP: ffff9a4625d00068 R08: 0000000000000001 R09: 0000000000000001
[  406.839650 ] R10: 0000000000000001 R11: 000000000000001f R12: ffff9a4625d4da80
[  406.840055 ] R13: ffff9a4625d00000 R14: ffffffffc0e2eb20 R15: 0000000000000000
[  406.840451 ] FS:  00007f0a264ffb80(0000) GS:ffff9a4e2d500000(0000) knlGS:0000000000000000
[  406.840851 ] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  406.841125 ] CR2: ffffe7b487148008 CR3: 000000018c4d2000 CR4: 00000000000006f0
[  406.841464 ] Call Trace:
[  406.841583 ]  <TASK>
[  406.841682 ]  ? __die+0x1f/0x70
[  406.841828 ]  ? page_fault_oops+0x159/0x470
[  406.842014 ]  ? fixup_exception+0x22/0x310
[  406.842198 ]  ? exc_page_fault+0x1ed/0x200
[  406.842382 ]  ? asm_exc_page_fault+0x22/0x30
[  406.842574 ]  ? bch2_fs_release+0x54/0x280 [bcachefs]
[  406.842842 ]  ? kfree+0x62/0x140
[  406.842988 ]  ? kfree+0x104/0x140
[  406.843138 ]  bch2_fs_release+0x54/0x280 [bcachefs]
[  406.843390 ]  kobject_put+0xb7/0x170
[  406.843552 ]  deactivate_locked_super+0x2f/0xa0
[  406.843756 ]  cleanup_mnt+0xba/0x150
[  406.843917 ]  task_work_run+0x59/0xa0
[  406.844083 ]  exit_to_user_mode_prepare+0x197/0x1a0
[  406.844302 ]  syscall_exit_to_user_mode+0x16/0x40
[  406.844510 ]  do_syscall_64+0x4e/0xf0
[  406.844675 ]  entry_SYSCALL_64_after_hwframe+0x6e/0x76
[  406.844907 ] RIP: 0033:0x7f0a2664e4fb

Signed-off-by: Su Yue <glass.su@suse.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
intel-lab-lkp pushed a commit to intel-lab-lkp/linux that referenced this pull request Jan 18, 2024
bch_fs::snapshots is allocated by kvzalloc in __snapshot_t_mut.
It should be freed by kvfree not kfree.
Or umount will triger:

[  406.829178 ] BUG: unable to handle page fault for address: ffffe7b487148008
[  406.830676 ] #PF: supervisor read access in kernel mode
[  406.831643 ] #PF: error_code(0x0000) - not-present page
[  406.832487 ] PGD 0 P4D 0
[  406.832898 ] Oops: 0000 [#1] PREEMPT SMP PTI
[  406.833512 ] CPU: 2 PID: 1754 Comm: umount Kdump: loaded Tainted: G           OE      6.7.0-rc7-custom+ torvalds#90
[  406.834746 ] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Arch Linux 1.16.3-1-1 04/01/2014
[  406.835796 ] RIP: 0010:kfree+0x62/0x140
[  406.836197 ] Code: 80 48 01 d8 0f 82 e9 00 00 00 48 c7 c2 00 00 00 80 48 2b 15 78 9f 1f 01 48 01 d0 48 c1 e8 0c 48 c1 e0 06 48 03 05 56 9f 1f 01 <48> 8b 50 08 48 89 c7 f6 c2 01 0f 85 b0 00 00 00 66 90 48 8b 07 f6
[  406.837810 ] RSP: 0018:ffffb9d641607e48 EFLAGS: 00010286
[  406.838213 ] RAX: ffffe7b487148000 RBX: ffffb9d645200000 RCX: ffffb9d641607dc4
[  406.838738 ] RDX: 000065bb00000000 RSI: ffffffffc0d88b84 RDI: ffffb9d645200000
[  406.839217 ] RBP: ffff9a4625d00068 R08: 0000000000000001 R09: 0000000000000001
[  406.839650 ] R10: 0000000000000001 R11: 000000000000001f R12: ffff9a4625d4da80
[  406.840055 ] R13: ffff9a4625d00000 R14: ffffffffc0e2eb20 R15: 0000000000000000
[  406.840451 ] FS:  00007f0a264ffb80(0000) GS:ffff9a4e2d500000(0000) knlGS:0000000000000000
[  406.840851 ] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  406.841125 ] CR2: ffffe7b487148008 CR3: 000000018c4d2000 CR4: 00000000000006f0
[  406.841464 ] Call Trace:
[  406.841583 ]  <TASK>
[  406.841682 ]  ? __die+0x1f/0x70
[  406.841828 ]  ? page_fault_oops+0x159/0x470
[  406.842014 ]  ? fixup_exception+0x22/0x310
[  406.842198 ]  ? exc_page_fault+0x1ed/0x200
[  406.842382 ]  ? asm_exc_page_fault+0x22/0x30
[  406.842574 ]  ? bch2_fs_release+0x54/0x280 [bcachefs]
[  406.842842 ]  ? kfree+0x62/0x140
[  406.842988 ]  ? kfree+0x104/0x140
[  406.843138 ]  bch2_fs_release+0x54/0x280 [bcachefs]
[  406.843390 ]  kobject_put+0xb7/0x170
[  406.843552 ]  deactivate_locked_super+0x2f/0xa0
[  406.843756 ]  cleanup_mnt+0xba/0x150
[  406.843917 ]  task_work_run+0x59/0xa0
[  406.844083 ]  exit_to_user_mode_prepare+0x197/0x1a0
[  406.844302 ]  syscall_exit_to_user_mode+0x16/0x40
[  406.844510 ]  do_syscall_64+0x4e/0xf0
[  406.844675 ]  entry_SYSCALL_64_after_hwframe+0x6e/0x76
[  406.844907 ] RIP: 0033:0x7f0a2664e4fb

Signed-off-by: Su Yue <glass.su@suse.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
torvalds pushed a commit that referenced this pull request Jan 21, 2024
bch_fs::snapshots is allocated by kvzalloc in __snapshot_t_mut.
It should be freed by kvfree not kfree.
Or umount will triger:

[  406.829178 ] BUG: unable to handle page fault for address: ffffe7b487148008
[  406.830676 ] #PF: supervisor read access in kernel mode
[  406.831643 ] #PF: error_code(0x0000) - not-present page
[  406.832487 ] PGD 0 P4D 0
[  406.832898 ] Oops: 0000 [#1] PREEMPT SMP PTI
[  406.833512 ] CPU: 2 PID: 1754 Comm: umount Kdump: loaded Tainted: G           OE      6.7.0-rc7-custom+ #90
[  406.834746 ] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Arch Linux 1.16.3-1-1 04/01/2014
[  406.835796 ] RIP: 0010:kfree+0x62/0x140
[  406.836197 ] Code: 80 48 01 d8 0f 82 e9 00 00 00 48 c7 c2 00 00 00 80 48 2b 15 78 9f 1f 01 48 01 d0 48 c1 e8 0c 48 c1 e0 06 48 03 05 56 9f 1f 01 <48> 8b 50 08 48 89 c7 f6 c2 01 0f 85 b0 00 00 00 66 90 48 8b 07 f6
[  406.837810 ] RSP: 0018:ffffb9d641607e48 EFLAGS: 00010286
[  406.838213 ] RAX: ffffe7b487148000 RBX: ffffb9d645200000 RCX: ffffb9d641607dc4
[  406.838738 ] RDX: 000065bb00000000 RSI: ffffffffc0d88b84 RDI: ffffb9d645200000
[  406.839217 ] RBP: ffff9a4625d00068 R08: 0000000000000001 R09: 0000000000000001
[  406.839650 ] R10: 0000000000000001 R11: 000000000000001f R12: ffff9a4625d4da80
[  406.840055 ] R13: ffff9a4625d00000 R14: ffffffffc0e2eb20 R15: 0000000000000000
[  406.840451 ] FS:  00007f0a264ffb80(0000) GS:ffff9a4e2d500000(0000) knlGS:0000000000000000
[  406.840851 ] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  406.841125 ] CR2: ffffe7b487148008 CR3: 000000018c4d2000 CR4: 00000000000006f0
[  406.841464 ] Call Trace:
[  406.841583 ]  <TASK>
[  406.841682 ]  ? __die+0x1f/0x70
[  406.841828 ]  ? page_fault_oops+0x159/0x470
[  406.842014 ]  ? fixup_exception+0x22/0x310
[  406.842198 ]  ? exc_page_fault+0x1ed/0x200
[  406.842382 ]  ? asm_exc_page_fault+0x22/0x30
[  406.842574 ]  ? bch2_fs_release+0x54/0x280 [bcachefs]
[  406.842842 ]  ? kfree+0x62/0x140
[  406.842988 ]  ? kfree+0x104/0x140
[  406.843138 ]  bch2_fs_release+0x54/0x280 [bcachefs]
[  406.843390 ]  kobject_put+0xb7/0x170
[  406.843552 ]  deactivate_locked_super+0x2f/0xa0
[  406.843756 ]  cleanup_mnt+0xba/0x150
[  406.843917 ]  task_work_run+0x59/0xa0
[  406.844083 ]  exit_to_user_mode_prepare+0x197/0x1a0
[  406.844302 ]  syscall_exit_to_user_mode+0x16/0x40
[  406.844510 ]  do_syscall_64+0x4e/0xf0
[  406.844675 ]  entry_SYSCALL_64_after_hwframe+0x6e/0x76
[  406.844907 ] RIP: 0033:0x7f0a2664e4fb

Signed-off-by: Su Yue <glass.su@suse.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
gyroninja added a commit to gyroninja/linux that referenced this pull request Jan 28, 2024
KSAN calls into rcu code which then triggers a write that reenters into KSAN
getting the system stuck doing infinite recursion.

#0  kmsan_get_context () at mm/kmsan/kmsan.h:106
#1  __msan_get_context_state () at mm/kmsan/instrumentation.c:331
#2  0xffffffff81495671 in get_current () at ./arch/x86/include/asm/current.h:42
#3  rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379
#4  __rcu_read_lock () at kernel/rcu/tree_plugin.h:402
#5  0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748
torvalds#6  pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016
torvalds#7  kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82
torvalds#8  virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75
torvalds#9  0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143
torvalds#10 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97
torvalds#11 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36
torvalds#12 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91
torvalds#13 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379
torvalds#14 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402
torvalds#15 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748
torvalds#16 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016
torvalds#17 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82
torvalds#18 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75
torvalds#19 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143
torvalds#20 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97
torvalds#21 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36
torvalds#22 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91
torvalds#23 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379
torvalds#24 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402
torvalds#25 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748
torvalds#26 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016
torvalds#27 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82
torvalds#28 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75
torvalds#29 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143
torvalds#30 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97
torvalds#31 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36
torvalds#32 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91
torvalds#33 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379
torvalds#34 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402
torvalds#35 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748
torvalds#36 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016
torvalds#37 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82
torvalds#38 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75
torvalds#39 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143
torvalds#40 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97
torvalds#41 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36
torvalds#42 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91
torvalds#43 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379
torvalds#44 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402
torvalds#45 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748
torvalds#46 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016
torvalds#47 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82
torvalds#48 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75
torvalds#49 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143
torvalds#50 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97
torvalds#51 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36
#52 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91
#53 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379
torvalds#54 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402
torvalds#55 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748
torvalds#56 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016
torvalds#57 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82
#58 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75
torvalds#59 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143
torvalds#60 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97
torvalds#61 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36
torvalds#62 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91
torvalds#63 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379
torvalds#64 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402
torvalds#65 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748
torvalds#66 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016
torvalds#67 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82
torvalds#68 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75
torvalds#69 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143
#70 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97
torvalds#71 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36
torvalds#72 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91
torvalds#73 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379
torvalds#74 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402
torvalds#75 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748
torvalds#76 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016
torvalds#77 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff86203c90) at ./arch/x86/include/asm/kmsan.h:82
torvalds#78 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff86203c90) at mm/kmsan/shadow.c:75
torvalds#79 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff86203c90, is_origin=false) at mm/kmsan/shadow.c:143
torvalds#80 kmsan_get_shadow_origin_ptr (address=0xffffffff86203c90, size=8, store=false) at mm/kmsan/shadow.c:97
torvalds#81 0xffffffff81b1dc72 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=8, store=false) at mm/kmsan/instrumentation.c:36
torvalds#82 __msan_metadata_ptr_for_load_8 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:92
torvalds#83 0xffffffff814fdb9e in filter_irq_stacks (entries=<optimized out>, nr_entries=4) at kernel/stacktrace.c:397
torvalds#84 0xffffffff829520e8 in stack_depot_save_flags (entries=0xffffffff8620d974 <init_task+1012>, nr_entries=4, alloc_flags=0, depot_flags=0) at lib/stackdepot.c:500
torvalds#85 0xffffffff81b1e560 in __msan_poison_alloca (address=0xffffffff86203da0, size=24, descr=<optimized out>) at mm/kmsan/instrumentation.c:285
torvalds#86 0xffffffff8562821c in _printk (fmt=0xffffffff85f191a5 "\0016Attempting lock1") at kernel/printk/printk.c:2324
torvalds#87 0xffffffff81942aa2 in kmem_cache_create_usercopy (name=0xffffffff85f18903 "mm_struct", size=1296, align=0, flags=270336, useroffset=<optimized out>, usersize=<optimized out>, ctor=0x0 <fixed_percpu_data>) at mm/slab_common.c:296
torvalds#88 0xffffffff86f337a0 in mm_cache_init () at kernel/fork.c:3262
torvalds#89 0xffffffff86eacb8e in start_kernel () at init/main.c:932
torvalds#90 0xffffffff86ecdf94 in x86_64_start_reservations (real_mode_data=0x140e0 <exception_stacks+28896> <error: Cannot access memory at address 0x140e0>) at arch/x86/kernel/head64.c:555
torvalds#91 0xffffffff86ecde9b in x86_64_start_kernel (real_mode_data=0x140e0 <exception_stacks+28896> <error: Cannot access memory at address 0x140e0>) at arch/x86/kernel/head64.c:536
torvalds#92 0xffffffff810001d3 in secondary_startup_64 () at /pool/workspace/linux/arch/x86/kernel/head_64.S:461
torvalds#93 0x0000000000000000 in ??
gyroninja added a commit to gyroninja/linux that referenced this pull request Jan 28, 2024
As of 5ec8e8e(mm/sparsemem: fix race in accessing memory_section->usage) KMSAN
now calls into RCU tree code during kmsan_get_metadata. This will trigger a
write that will reenter into KMSAN getting the system stuck doing infinite
recursion.

#0  kmsan_get_context () at mm/kmsan/kmsan.h:106
#1  __msan_get_context_state () at mm/kmsan/instrumentation.c:331
#2  0xffffffff81495671 in get_current () at ./arch/x86/include/asm/current.h:42
#3  rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379
#4  __rcu_read_lock () at kernel/rcu/tree_plugin.h:402
#5  0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748
torvalds#6  pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016
torvalds#7  kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82
torvalds#8  virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75
torvalds#9  0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143
torvalds#10 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97
torvalds#11 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36
torvalds#12 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91
torvalds#13 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379
torvalds#14 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402
torvalds#15 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748
torvalds#16 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016
torvalds#17 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82
torvalds#18 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75
torvalds#19 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143
torvalds#20 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97
torvalds#21 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36
torvalds#22 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91
torvalds#23 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379
torvalds#24 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402
torvalds#25 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748
torvalds#26 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016
torvalds#27 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82
torvalds#28 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75
torvalds#29 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143
torvalds#30 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97
torvalds#31 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36
torvalds#32 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91
torvalds#33 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379
torvalds#34 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402
torvalds#35 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748
torvalds#36 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016
torvalds#37 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82
torvalds#38 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75
torvalds#39 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143
torvalds#40 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97
torvalds#41 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36
torvalds#42 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91
torvalds#43 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379
torvalds#44 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402
torvalds#45 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748
torvalds#46 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016
torvalds#47 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82
torvalds#48 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75
torvalds#49 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143
torvalds#50 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97
torvalds#51 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36
#52 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91
#53 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379
torvalds#54 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402
torvalds#55 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748
torvalds#56 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016
torvalds#57 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82
#58 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75
torvalds#59 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143
torvalds#60 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97
torvalds#61 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36
torvalds#62 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91
torvalds#63 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379
torvalds#64 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402
torvalds#65 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748
torvalds#66 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016
torvalds#67 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82
torvalds#68 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75
torvalds#69 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143
#70 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97
torvalds#71 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36
torvalds#72 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91
torvalds#73 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379
torvalds#74 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402
torvalds#75 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748
torvalds#76 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016
torvalds#77 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff86203c90) at ./arch/x86/include/asm/kmsan.h:82
torvalds#78 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff86203c90) at mm/kmsan/shadow.c:75
torvalds#79 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff86203c90, is_origin=false) at mm/kmsan/shadow.c:143
torvalds#80 kmsan_get_shadow_origin_ptr (address=0xffffffff86203c90, size=8, store=false) at mm/kmsan/shadow.c:97
torvalds#81 0xffffffff81b1dc72 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=8, store=false) at mm/kmsan/instrumentation.c:36
torvalds#82 __msan_metadata_ptr_for_load_8 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:92
torvalds#83 0xffffffff814fdb9e in filter_irq_stacks (entries=<optimized out>, nr_entries=4) at kernel/stacktrace.c:397
torvalds#84 0xffffffff829520e8 in stack_depot_save_flags (entries=0xffffffff8620d974 <init_task+1012>, nr_entries=4, alloc_flags=0, depot_flags=0) at lib/stackdepot.c:500
torvalds#85 0xffffffff81b1e560 in __msan_poison_alloca (address=0xffffffff86203da0, size=24, descr=<optimized out>) at mm/kmsan/instrumentation.c:285
torvalds#86 0xffffffff8562821c in _printk (fmt=0xffffffff85f191a5 "\0016Attempting lock1") at kernel/printk/printk.c:2324
torvalds#87 0xffffffff81942aa2 in kmem_cache_create_usercopy (name=0xffffffff85f18903 "mm_struct", size=1296, align=0, flags=270336, useroffset=<optimized out>, usersize=<optimized out>, ctor=0x0 <fixed_percpu_data>) at mm/slab_common.c:296
torvalds#88 0xffffffff86f337a0 in mm_cache_init () at kernel/fork.c:3262
torvalds#89 0xffffffff86eacb8e in start_kernel () at init/main.c:932
torvalds#90 0xffffffff86ecdf94 in x86_64_start_reservations (real_mode_data=0x140e0 <exception_stacks+28896> <error: Cannot access memory at address 0x140e0>) at arch/x86/kernel/head64.c:555
torvalds#91 0xffffffff86ecde9b in x86_64_start_kernel (real_mode_data=0x140e0 <exception_stacks+28896> <error: Cannot access memory at address 0x140e0>) at arch/x86/kernel/head64.c:536
torvalds#92 0xffffffff810001d3 in secondary_startup_64 () at /pool/workspace/linux/arch/x86/kernel/head_64.S:461
torvalds#93 0x0000000000000000 in ??
1054009064 pushed a commit to 1054009064/linux that referenced this pull request Feb 16, 2024
commit 369acf9 upstream.

bch_fs::snapshots is allocated by kvzalloc in __snapshot_t_mut.
It should be freed by kvfree not kfree.
Or umount will triger:

[  406.829178 ] BUG: unable to handle page fault for address: ffffe7b487148008
[  406.830676 ] #PF: supervisor read access in kernel mode
[  406.831643 ] #PF: error_code(0x0000) - not-present page
[  406.832487 ] PGD 0 P4D 0
[  406.832898 ] Oops: 0000 [#1] PREEMPT SMP PTI
[  406.833512 ] CPU: 2 PID: 1754 Comm: umount Kdump: loaded Tainted: G           OE      6.7.0-rc7-custom+ torvalds#90
[  406.834746 ] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Arch Linux 1.16.3-1-1 04/01/2014
[  406.835796 ] RIP: 0010:kfree+0x62/0x140
[  406.836197 ] Code: 80 48 01 d8 0f 82 e9 00 00 00 48 c7 c2 00 00 00 80 48 2b 15 78 9f 1f 01 48 01 d0 48 c1 e8 0c 48 c1 e0 06 48 03 05 56 9f 1f 01 <48> 8b 50 08 48 89 c7 f6 c2 01 0f 85 b0 00 00 00 66 90 48 8b 07 f6
[  406.837810 ] RSP: 0018:ffffb9d641607e48 EFLAGS: 00010286
[  406.838213 ] RAX: ffffe7b487148000 RBX: ffffb9d645200000 RCX: ffffb9d641607dc4
[  406.838738 ] RDX: 000065bb00000000 RSI: ffffffffc0d88b84 RDI: ffffb9d645200000
[  406.839217 ] RBP: ffff9a4625d00068 R08: 0000000000000001 R09: 0000000000000001
[  406.839650 ] R10: 0000000000000001 R11: 000000000000001f R12: ffff9a4625d4da80
[  406.840055 ] R13: ffff9a4625d00000 R14: ffffffffc0e2eb20 R15: 0000000000000000
[  406.840451 ] FS:  00007f0a264ffb80(0000) GS:ffff9a4e2d500000(0000) knlGS:0000000000000000
[  406.840851 ] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  406.841125 ] CR2: ffffe7b487148008 CR3: 000000018c4d2000 CR4: 00000000000006f0
[  406.841464 ] Call Trace:
[  406.841583 ]  <TASK>
[  406.841682 ]  ? __die+0x1f/0x70
[  406.841828 ]  ? page_fault_oops+0x159/0x470
[  406.842014 ]  ? fixup_exception+0x22/0x310
[  406.842198 ]  ? exc_page_fault+0x1ed/0x200
[  406.842382 ]  ? asm_exc_page_fault+0x22/0x30
[  406.842574 ]  ? bch2_fs_release+0x54/0x280 [bcachefs]
[  406.842842 ]  ? kfree+0x62/0x140
[  406.842988 ]  ? kfree+0x104/0x140
[  406.843138 ]  bch2_fs_release+0x54/0x280 [bcachefs]
[  406.843390 ]  kobject_put+0xb7/0x170
[  406.843552 ]  deactivate_locked_super+0x2f/0xa0
[  406.843756 ]  cleanup_mnt+0xba/0x150
[  406.843917 ]  task_work_run+0x59/0xa0
[  406.844083 ]  exit_to_user_mode_prepare+0x197/0x1a0
[  406.844302 ]  syscall_exit_to_user_mode+0x16/0x40
[  406.844510 ]  do_syscall_64+0x4e/0xf0
[  406.844675 ]  entry_SYSCALL_64_after_hwframe+0x6e/0x76
[  406.844907 ] RIP: 0033:0x7f0a2664e4fb

Signed-off-by: Su Yue <glass.su@suse.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
intel-lab-lkp pushed a commit to intel-lab-lkp/linux that referenced this pull request Mar 20, 2024
Lockdep detects a possible deadlock as listed below. This is because it
detects the IA55 interrupt controller .irq_eoi() API is called from
interrupt context while configuration-specific API (e.g., .irq_enable())
could be called from process context on resume path (by calling
rzg2l_gpio_irq_restore()). To avoid this, protect the call of
rzg2l_gpio_irq_enable() with spin_lock_irqsave()/spin_unlock_irqrestore().
With this the same approach that is available in __setup_irq() is mimicked
to pinctrl IRQ resume function.

Below is the lockdep report:

 WARNING: inconsistent lock state
 6.8.0-rc5-next-20240219-arm64-renesas-00030-gb17a289abf1f torvalds#90 Not tainted
 --------------------------------
 inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage.
 str_rwdt_t_001./159 [HC0[0]:SC0[0]:HE1:SE1] takes:
 ffff00000b001d70 (&rzg2l_irqc_data->lock){?...}-{2:2}, at: rzg2l_irqc_irq_enable+0x60/0xa4
 {IN-HARDIRQ-W} state was registered at:
 lock_acquire+0x1e0/0x310
 _raw_spin_lock+0x44/0x58
 rzg2l_irqc_eoi+0x2c/0x130
 irq_chip_eoi_parent+0x18/0x20
 rzg2l_gpio_irqc_eoi+0xc/0x14
 handle_fasteoi_irq+0x134/0x230
 generic_handle_domain_irq+0x28/0x3c
 gic_handle_irq+0x4c/0xbc
 call_on_irq_stack+0x24/0x34
 do_interrupt_handler+0x78/0x7c
 el1_interrupt+0x30/0x5c
 el1h_64_irq_handler+0x14/0x1c
 el1h_64_irq+0x64/0x68
 _raw_spin_unlock_irqrestore+0x34/0x70
 __setup_irq+0x4d4/0x6b8
 request_threaded_irq+0xe8/0x1a0
 request_any_context_irq+0x60/0xb8
 devm_request_any_context_irq+0x74/0x104
 gpio_keys_probe+0x374/0xb08
 platform_probe+0x64/0xcc
 really_probe+0x140/0x2ac
 __driver_probe_device+0x74/0x124
 driver_probe_device+0x3c/0x15c
 __driver_attach+0xec/0x1c4
 bus_for_each_dev+0x70/0xcc
 driver_attach+0x20/0x28
 bus_add_driver+0xdc/0x1d0
 driver_register+0x5c/0x118
 __platform_driver_register+0x24/0x2c
 gpio_keys_init+0x18/0x20
 do_one_initcall+0x70/0x290
 kernel_init_freeable+0x294/0x504
 kernel_init+0x20/0x1cc
 ret_from_fork+0x10/0x20
 irq event stamp: 69071
 hardirqs last enabled at (69071): [<ffff800080e0dafc>] _raw_spin_unlock_irqrestore+0x6c/0x70
 hardirqs last disabled at (69070): [<ffff800080e0cfec>] _raw_spin_lock_irqsave+0x7c/0x80
 softirqs last enabled at (67654): [<ffff800080010614>] __do_softirq+0x494/0x4dc
 softirqs last disabled at (67645): [<ffff800080015238>] ____do_softirq+0xc/0x14

 other info that might help us debug this:
 Possible unsafe locking scenario:

 CPU0
 ----
 lock(&rzg2l_irqc_data->lock);
 <Interrupt>
 lock(&rzg2l_irqc_data->lock);

 *** DEADLOCK ***

 4 locks held by str_rwdt_t_001./159:
 #0: ffff00000b10f3f0 (sb_writers#4){.+.+}-{0:0}, at: vfs_write+0x1a4/0x35c
 #1: ffff00000e43ba88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0xe8/0x1a8
 #2: ffff00000aa21dc8 (kn->active#40){.+.+}-{0:0}, at: kernfs_fop_write_iter+0xf0/0x1a8
 #3: ffff80008179d970 (system_transition_mutex){+.+.}-{3:3}, at: pm_suspend+0x9c/0x278

 stack backtrace:
 CPU: 0 PID: 159 Comm: str_rwdt_t_001. Not tainted 6.8.0-rc5-next-20240219-arm64-renesas-00030-gb17a289abf1f torvalds#90
 Hardware name: Renesas SMARC EVK version 2 based on r9a08g045s33 (DT)
 Call trace:
 dump_backtrace+0x94/0xe8
 show_stack+0x14/0x1c
 dump_stack_lvl+0x88/0xc4
 dump_stack+0x14/0x1c
 print_usage_bug.part.0+0x294/0x348
 mark_lock+0x6b0/0x948
 __lock_acquire+0x750/0x20b0
 lock_acquire+0x1e0/0x310
 _raw_spin_lock+0x44/0x58
 rzg2l_irqc_irq_enable+0x60/0xa4
 irq_chip_enable_parent+0x1c/0x34
 rzg2l_gpio_irq_enable+0xc4/0xd8
 rzg2l_pinctrl_resume_noirq+0x4cc/0x520
 pm_generic_resume_noirq+0x28/0x3c
 genpd_finish_resume+0xc0/0xdc
 genpd_resume_noirq+0x14/0x1c
 dpm_run_callback+0x34/0x90
 device_resume_noirq+0xa8/0x268
 dpm_noirq_resume_devices+0x13c/0x160
 dpm_resume_noirq+0xc/0x1c
 suspend_devices_and_enter+0x2c8/0x570
 pm_suspend+0x1ac/0x278
 state_store+0x88/0x124
 kobj_attr_store+0x14/0x24
 sysfs_kf_write+0x48/0x6c
 kernfs_fop_write_iter+0x118/0x1a8
 vfs_write+0x270/0x35c
 ksys_write+0x64/0xec
 __arm64_sys_write+0x18/0x20
 invoke_syscall+0x44/0x108
 el0_svc_common.constprop.0+0xb4/0xd4
 do_el0_svc+0x18/0x20
 el0_svc+0x3c/0xb8
 el0t_64_sync_handler+0xb8/0xbc
 el0t_64_sync+0x14c/0x150

Fixes: 254203f ("pinctrl: renesas: rzg2l: Add suspend/resume support")
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
intel-lab-lkp pushed a commit to intel-lab-lkp/linux that referenced this pull request Mar 26, 2024
Lockdep detects a possible deadlock as listed below. This is because it
detects the IA55 interrupt controller .irq_eoi() API is called from
interrupt context while configuration-specific API (e.g., .irq_enable())
could be called from process context on resume path (by calling
rzg2l_gpio_irq_restore()). To avoid this, protect the call of
rzg2l_gpio_irq_enable() with spin_lock_irqsave()/spin_unlock_irqrestore().
With this the same approach that is available in __setup_irq() is mimicked
to pinctrl IRQ resume function.

Below is the lockdep report:

    WARNING: inconsistent lock state
    6.8.0-rc5-next-20240219-arm64-renesas-00030-gb17a289abf1f torvalds#90 Not tainted
    --------------------------------
    inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage.
    str_rwdt_t_001./159 [HC0[0]:SC0[0]:HE1:SE1] takes:
    ffff00000b001d70 (&rzg2l_irqc_data->lock){?...}-{2:2}, at: rzg2l_irqc_irq_enable+0x60/0xa4
    {IN-HARDIRQ-W} state was registered at:
    lock_acquire+0x1e0/0x310
    _raw_spin_lock+0x44/0x58
    rzg2l_irqc_eoi+0x2c/0x130
    irq_chip_eoi_parent+0x18/0x20
    rzg2l_gpio_irqc_eoi+0xc/0x14
    handle_fasteoi_irq+0x134/0x230
    generic_handle_domain_irq+0x28/0x3c
    gic_handle_irq+0x4c/0xbc
    call_on_irq_stack+0x24/0x34
    do_interrupt_handler+0x78/0x7c
    el1_interrupt+0x30/0x5c
    el1h_64_irq_handler+0x14/0x1c
    el1h_64_irq+0x64/0x68
    _raw_spin_unlock_irqrestore+0x34/0x70
    __setup_irq+0x4d4/0x6b8
    request_threaded_irq+0xe8/0x1a0
    request_any_context_irq+0x60/0xb8
    devm_request_any_context_irq+0x74/0x104
    gpio_keys_probe+0x374/0xb08
    platform_probe+0x64/0xcc
    really_probe+0x140/0x2ac
    __driver_probe_device+0x74/0x124
    driver_probe_device+0x3c/0x15c
    __driver_attach+0xec/0x1c4
    bus_for_each_dev+0x70/0xcc
    driver_attach+0x20/0x28
    bus_add_driver+0xdc/0x1d0
    driver_register+0x5c/0x118
    __platform_driver_register+0x24/0x2c
    gpio_keys_init+0x18/0x20
    do_one_initcall+0x70/0x290
    kernel_init_freeable+0x294/0x504
    kernel_init+0x20/0x1cc
    ret_from_fork+0x10/0x20
    irq event stamp: 69071
    hardirqs last enabled at (69071): [<ffff800080e0dafc>] _raw_spin_unlock_irqrestore+0x6c/0x70
    hardirqs last disabled at (69070): [<ffff800080e0cfec>] _raw_spin_lock_irqsave+0x7c/0x80
    softirqs last enabled at (67654): [<ffff800080010614>] __do_softirq+0x494/0x4dc
    softirqs last disabled at (67645): [<ffff800080015238>] ____do_softirq+0xc/0x14

    other info that might help us debug this:
    Possible unsafe locking scenario:

    CPU0
    ----
    lock(&rzg2l_irqc_data->lock);
    <Interrupt>
    lock(&rzg2l_irqc_data->lock);

    *** DEADLOCK ***

    4 locks held by str_rwdt_t_001./159:
    #0: ffff00000b10f3f0 (sb_writers#4){.+.+}-{0:0}, at: vfs_write+0x1a4/0x35c
    #1: ffff00000e43ba88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0xe8/0x1a8
    #2: ffff00000aa21dc8 (kn->active#40){.+.+}-{0:0}, at: kernfs_fop_write_iter+0xf0/0x1a8
    #3: ffff80008179d970 (system_transition_mutex){+.+.}-{3:3}, at: pm_suspend+0x9c/0x278

    stack backtrace:
    CPU: 0 PID: 159 Comm: str_rwdt_t_001. Not tainted 6.8.0-rc5-next-20240219-arm64-renesas-00030-gb17a289abf1f torvalds#90
    Hardware name: Renesas SMARC EVK version 2 based on r9a08g045s33 (DT)
    Call trace:
    dump_backtrace+0x94/0xe8
    show_stack+0x14/0x1c
    dump_stack_lvl+0x88/0xc4
    dump_stack+0x14/0x1c
    print_usage_bug.part.0+0x294/0x348
    mark_lock+0x6b0/0x948
    __lock_acquire+0x750/0x20b0
    lock_acquire+0x1e0/0x310
    _raw_spin_lock+0x44/0x58
    rzg2l_irqc_irq_enable+0x60/0xa4
    irq_chip_enable_parent+0x1c/0x34
    rzg2l_gpio_irq_enable+0xc4/0xd8
    rzg2l_pinctrl_resume_noirq+0x4cc/0x520
    pm_generic_resume_noirq+0x28/0x3c
    genpd_finish_resume+0xc0/0xdc
    genpd_resume_noirq+0x14/0x1c
    dpm_run_callback+0x34/0x90
    device_resume_noirq+0xa8/0x268
    dpm_noirq_resume_devices+0x13c/0x160
    dpm_resume_noirq+0xc/0x1c
    suspend_devices_and_enter+0x2c8/0x570
    pm_suspend+0x1ac/0x278
    state_store+0x88/0x124
    kobj_attr_store+0x14/0x24
    sysfs_kf_write+0x48/0x6c
    kernfs_fop_write_iter+0x118/0x1a8
    vfs_write+0x270/0x35c
    ksys_write+0x64/0xec
    __arm64_sys_write+0x18/0x20
    invoke_syscall+0x44/0x108
    el0_svc_common.constprop.0+0xb4/0xd4
    do_el0_svc+0x18/0x20
    el0_svc+0x3c/0xb8
    el0t_64_sync_handler+0xb8/0xbc
    el0t_64_sync+0x14c/0x150

Fixes: 254203f ("pinctrl: renesas: rzg2l: Add suspend/resume support")
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20240320104230.446400-2-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
intelfx pushed a commit to intelfx/linux that referenced this pull request Aug 15, 2024
bch_fs::snapshots is allocated by kvzalloc in __snapshot_t_mut.
It should be freed by kvfree not kfree.
Or umount will triger:

[  406.829178 ] BUG: unable to handle page fault for address: ffffe7b487148008
[  406.830676 ] #PF: supervisor read access in kernel mode
[  406.831643 ] #PF: error_code(0x0000) - not-present page
[  406.832487 ] PGD 0 P4D 0
[  406.832898 ] Oops: 0000 [#1] PREEMPT SMP PTI
[  406.833512 ] CPU: 2 PID: 1754 Comm: umount Kdump: loaded Tainted: G           OE      6.7.0-rc7-custom+ torvalds#90
[  406.834746 ] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Arch Linux 1.16.3-1-1 04/01/2014
[  406.835796 ] RIP: 0010:kfree+0x62/0x140
[  406.836197 ] Code: 80 48 01 d8 0f 82 e9 00 00 00 48 c7 c2 00 00 00 80 48 2b 15 78 9f 1f 01 48 01 d0 48 c1 e8 0c 48 c1 e0 06 48 03 05 56 9f 1f 01 <48> 8b 50 08 48 89 c7 f6 c2 01 0f 85 b0 00 00 00 66 90 48 8b 07 f6
[  406.837810 ] RSP: 0018:ffffb9d641607e48 EFLAGS: 00010286
[  406.838213 ] RAX: ffffe7b487148000 RBX: ffffb9d645200000 RCX: ffffb9d641607dc4
[  406.838738 ] RDX: 000065bb00000000 RSI: ffffffffc0d88b84 RDI: ffffb9d645200000
[  406.839217 ] RBP: ffff9a4625d00068 R08: 0000000000000001 R09: 0000000000000001
[  406.839650 ] R10: 0000000000000001 R11: 000000000000001f R12: ffff9a4625d4da80
[  406.840055 ] R13: ffff9a4625d00000 R14: ffffffffc0e2eb20 R15: 0000000000000000
[  406.840451 ] FS:  00007f0a264ffb80(0000) GS:ffff9a4e2d500000(0000) knlGS:0000000000000000
[  406.840851 ] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  406.841125 ] CR2: ffffe7b487148008 CR3: 000000018c4d2000 CR4: 00000000000006f0
[  406.841464 ] Call Trace:
[  406.841583 ]  <TASK>
[  406.841682 ]  ? __die+0x1f/0x70
[  406.841828 ]  ? page_fault_oops+0x159/0x470
[  406.842014 ]  ? fixup_exception+0x22/0x310
[  406.842198 ]  ? exc_page_fault+0x1ed/0x200
[  406.842382 ]  ? asm_exc_page_fault+0x22/0x30
[  406.842574 ]  ? bch2_fs_release+0x54/0x280 [bcachefs]
[  406.842842 ]  ? kfree+0x62/0x140
[  406.842988 ]  ? kfree+0x104/0x140
[  406.843138 ]  bch2_fs_release+0x54/0x280 [bcachefs]
[  406.843390 ]  kobject_put+0xb7/0x170
[  406.843552 ]  deactivate_locked_super+0x2f/0xa0
[  406.843756 ]  cleanup_mnt+0xba/0x150
[  406.843917 ]  task_work_run+0x59/0xa0
[  406.844083 ]  exit_to_user_mode_prepare+0x197/0x1a0
[  406.844302 ]  syscall_exit_to_user_mode+0x16/0x40
[  406.844510 ]  do_syscall_64+0x4e/0xf0
[  406.844675 ]  entry_SYSCALL_64_after_hwframe+0x6e/0x76
[  406.844907 ] RIP: 0033:0x7f0a2664e4fb

Signed-off-by: Su Yue <glass.su@suse.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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6 participants