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Message-ID: <202405151008.6ddd1aaf-oliver.sang@intel.com>
Date: Wed, 15 May 2024 10:41:19 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Suren Baghdasaryan <surenb@...gle.com>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>, Linux Memory Management List
	<linux-mm@...ck.org>, Andrew Morton <akpm@...ux-foundation.org>, "Kent
 Overstreet" <kent.overstreet@...ux.dev>, Randy Dunlap
	<rdunlap@...radead.org>, Kees Cook <keescook@...omium.org>, Alexander Viro
	<viro@...iv.linux.org.uk>, Alex Gaynor <alex.gaynor@...il.com>, Alice Ryhl
	<aliceryhl@...gle.com>, Andreas Hindborg <a.hindborg@...sung.com>, Benno
 Lossin <benno.lossin@...ton.me>, Björn Roy Baron
	<bjorn3_gh@...tonmail.com>, Boqun Feng <boqun.feng@...il.com>, "Christoph
 Lameter" <cl@...ux.com>, Dennis Zhou <dennis@...nel.org>, Gary Guo
	<gary@...yguo.net>, Miguel Ojeda <ojeda@...nel.org>, Pasha Tatashin
	<pasha.tatashin@...een.com>, Peter Zijlstra <peterz@...radead.org>, Tejun Heo
	<tj@...nel.org>, Vlastimil Babka <vbabka@...e.cz>, Wedson Almeida Filho
	<wedsonaf@...il.com>, <linux-hardening@...r.kernel.org>,
	<oliver.sang@...el.com>
Subject: [linux-next:master] [mm/slab]  7bd230a266:
 WARNING:at_mm/util.c:#kvmalloc_node_noprof



Hello,

as we understand, this commit is not the root-cause of this WARNING. the WARNING
just shows in another way by commit changes.

53ed0af496422959 7bd230a26648ac68ab3731ebbc4
---------------- ---------------------------
       fail:runs  %reproduction    fail:runs
           |             |             |
          6:6          -83%            :6     dmesg.RIP:kvmalloc_node
           :6           33%           6:6     dmesg.RIP:kvmalloc_node_noprof
          6:6          -83%            :6     dmesg.WARNING:at_mm/util.c:#kvmalloc_node
           :6           33%           6:6     dmesg.WARNING:at_mm/util.c:#kvmalloc_node_noprof


but we failed to bisect "dmesg.WARNING:at_mm/util.c:#kvmalloc_node".

we still made this report FYI what we observed in our tests, not sure if it
could give somebody some hints to find the real problem then judge if a fix
is needed.

below is full report.



kernel test robot noticed "WARNING:at_mm/util.c:#kvmalloc_node_noprof" on:

commit: 7bd230a26648ac68ab3731ebbc449090f0ac6a37 ("mm/slab: enable slab allocation tagging for kmalloc and friends")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master

[test failed on linux-next/master 6ba6c795dc73c22ce2c86006f17c4aa802db2a60]

in testcase: igt
version: igt-x86_64-86712f2ef-1_20240511
with following parameters:

	group: gem_exec_reloc



compiler: gcc-13
test machine: 20 threads 1 sockets (Commet Lake) with 16G memory

(please refer to attached dmesg/kmsg for entire log/backtrace)



If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@...el.com>
| Closes: https://lore.kernel.org/oe-lkp/202405151008.6ddd1aaf-oliver.sang@intel.com


[  940.101700][ T5353] ------------[ cut here ]------------
[ 940.107107][ T5353] WARNING: CPU: 1 PID: 5353 at mm/util.c:649 kvmalloc_node_noprof (mm/util.c:649 (discriminator 1)) 
[  940.116178][ T5353] Modules linked in: netconsole btrfs blake2b_generic xor zstd_compress intel_rapl_msr intel_rapl_common intel_uncore_frequency intel_uncore_frequency_common raid6_pq libcrc32c x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel sd_mod t10_pi crc64_rocksoft_generic crc64_rocksoft ipmi_devintf crc64 sg ipmi_msghandler kvm crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel i915 sha512_ssse3 sdhci_pci drm_buddy cqhci ahci rapl intel_gtt drm_display_helper sdhci libahci mei_me ttm intel_cstate i2c_designware_platform ppdev intel_uncore intel_wmi_thunderbolt wmi_bmof libata mei i2c_designware_core idma64 drm_kms_helper mmc_core i2c_i801 i2c_smbus intel_pch_thermal parport_pc video parport pinctrl_cannonlake wmi acpi_pad acpi_tad serio_raw binfmt_misc drm fuse loop dm_mod ip_tables
[  940.188041][ T5353] CPU: 1 PID: 5353 Comm: gem_exec_reloc Not tainted 6.9.0-rc4-00085-g7bd230a26648 #1
[ 940.197459][ T5353] RIP: 0010:kvmalloc_node_noprof (mm/util.c:649 (discriminator 1)) 
[ 940.203412][ T5353] Code: 04 a3 0d 00 48 83 c4 18 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e c3 cc cc cc cc 49 be 00 00 00 00 00 20 00 00 eb 9f 80 e7 20 75 de <0f> 0b eb da 48 c7 c7 10 ec af 84 e8 0e a6 18 00 e9 3f ff ff ff 48
All code
========
   0:	04 a3                	add    $0xa3,%al
   2:	0d 00 48 83 c4       	or     $0xc4834800,%eax
   7:	18 48 83             	sbb    %cl,-0x7d(%rax)
   a:	c4                   	(bad)  
   b:	08 5b 5d             	or     %bl,0x5d(%rbx)
   e:	41 5c                	pop    %r12
  10:	41 5d                	pop    %r13
  12:	41 5e                	pop    %r14
  14:	c3                   	retq   
  15:	cc                   	int3   
  16:	cc                   	int3   
  17:	cc                   	int3   
  18:	cc                   	int3   
  19:	49 be 00 00 00 00 00 	movabs $0x200000000000,%r14
  20:	20 00 00 
  23:	eb 9f                	jmp    0xffffffffffffffc4
  25:	80 e7 20             	and    $0x20,%bh
  28:	75 de                	jne    0x8
  2a:*	0f 0b                	ud2    		<-- trapping instruction
  2c:	eb da                	jmp    0x8
  2e:	48 c7 c7 10 ec af 84 	mov    $0xffffffff84afec10,%rdi
  35:	e8 0e a6 18 00       	callq  0x18a648
  3a:	e9 3f ff ff ff       	jmpq   0xffffffffffffff7e
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2    
   2:	eb da                	jmp    0xffffffffffffffde
   4:	48 c7 c7 10 ec af 84 	mov    $0xffffffff84afec10,%rdi
   b:	e8 0e a6 18 00       	callq  0x18a61e
  10:	e9 3f ff ff ff       	jmpq   0xffffffffffffff54
  15:	48                   	rex.W
[  940.222971][ T5353] RSP: 0018:ffffc90000b576f8 EFLAGS: 00010246
[  940.228978][ T5353] RAX: 0000000000000000 RBX: 00000000000000c0 RCX: 0000000000000013
[  940.236885][ T5353] RDX: 000000000007ffff RSI: 0000000080000000 RDI: 0000000000000000
[  940.244792][ T5353] RBP: 0000000080000000 R08: 0000000000000001 R09: 0000000000000000
[  940.252700][ T5353] R10: ffffc90000b576f8 R11: 0000000000000000 R12: 00000000ffffffff
[  940.260626][ T5353] R13: 0000000000000000 R14: 0000000004000000 R15: ffffc90000b579a8
[  940.268566][ T5353] FS:  00007f2043c5e8c0(0000) GS:ffff8883ee080000(0000) knlGS:0000000000000000
[  940.277455][ T5353] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  940.283988][ T5353] CR2: 00007f2043b5d000 CR3: 000000022f74a002 CR4: 00000000003706f0
[  940.291922][ T5353] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  940.299872][ T5353] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  940.307791][ T5353] Call Trace:
[  940.311021][ T5353]  <TASK>
[ 940.313926][ T5353] ? __warn (kernel/panic.c:694) 
[ 940.317930][ T5353] ? kvmalloc_node_noprof (mm/util.c:649 (discriminator 1)) 
[ 940.323187][ T5353] ? report_bug (lib/bug.c:180 lib/bug.c:219) 
[ 940.327596][ T5353] ? handle_bug (arch/x86/kernel/traps.c:239 (discriminator 1)) 
[ 940.331835][ T5353] ? exc_invalid_op (arch/x86/kernel/traps.c:260 (discriminator 1)) 
[ 940.336419][ T5353] ? asm_exc_invalid_op (arch/x86/include/asm/idtentry.h:621) 
[ 940.341348][ T5353] ? kvmalloc_node_noprof (mm/util.c:649 (discriminator 1)) 
[ 940.346602][ T5353] ? kvmalloc_node_noprof (mm/util.c:640) 
[ 940.351795][ T5353] eb_copy_relocations (drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c:1685) i915
[ 940.357636][ T5353] eb_relocate_parse_slow (drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c:1815) i915
[ 940.363616][ T5353] i915_gem_do_execbuffer (drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c:1960 drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c:3466) i915
[ 940.369790][ T5353] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 (discriminator 1)) 
[ 940.375305][ T5353] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 940.380084][ T5353] ? __pfx_i915_gem_do_execbuffer (drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c:3359) i915
[ 940.386673][ T5353] ? kasan_save_track (arch/x86/include/asm/current.h:49 (discriminator 1) mm/kasan/common.c:60 (discriminator 1) mm/kasan/common.c:69 (discriminator 1)) 
[ 940.391449][ T5353] ? __kasan_kmalloc (mm/kasan/common.c:370 mm/kasan/common.c:387) 
[ 940.396121][ T5353] ? __pfx___might_resched (kernel/sched/core.c:10152) 
[ 940.401339][ T5353] ? check_heap_object (arch/x86/include/asm/bitops.h:206 (discriminator 1) arch/x86/include/asm/bitops.h:238 (discriminator 1) include/asm-generic/bitops/instrumented-non-atomic.h:142 (discriminator 1) include/linux/page-flags.h:527 (discriminator 1) mm/usercopy.c:194 (discriminator 1)) 
[ 940.406359][ T5353] i915_gem_execbuffer2_ioctl (drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c:3612) i915
[ 940.412769][ T5353] ? __pfx_i915_gem_execbuffer2_ioctl (drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c:3572) i915
[ 940.419658][ T5353] drm_ioctl_kernel (drivers/gpu/drm/drm_ioctl.c:744) drm
[ 940.425039][ T5353] ? __pfx_drm_ioctl_kernel (drivers/gpu/drm/drm_ioctl.c:729) drm
[ 940.430914][ T5353] drm_ioctl (drivers/gpu/drm/drm_ioctl.c:842) drm
[ 940.435660][ T5353] ? __pfx_i915_gem_execbuffer2_ioctl (drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c:3572) i915
[ 940.442610][ T5353] ? __pfx_drm_ioctl (drivers/gpu/drm/drm_ioctl.c:763) drm
[ 940.447822][ T5353] ? __fget_light (include/linux/atomic/atomic-arch-fallback.h:479 (discriminator 2) include/linux/atomic/atomic-instrumented.h:50 (discriminator 2) fs/file.c:1145 (discriminator 2)) 
[ 940.452318][ T5353] __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:904 fs/ioctl.c:890 fs/ioctl.c:890) 
[ 940.457008][ T5353] do_syscall_64 (arch/x86/entry/common.c:52 (discriminator 1) arch/x86/entry/common.c:83 (discriminator 1)) 
[ 940.461440][ T5353] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  940.467236][ T5353] RIP: 0033:0x7f2046007c5b
[ 940.471588][ T5353] Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
All code
========
   0:	00 48 89             	add    %cl,-0x77(%rax)
   3:	44 24 18             	rex.R and $0x18,%al
   6:	31 c0                	xor    %eax,%eax
   8:	48 8d 44 24 60       	lea    0x60(%rsp),%rax
   d:	c7 04 24 10 00 00 00 	movl   $0x10,(%rsp)
  14:	48 89 44 24 08       	mov    %rax,0x8(%rsp)
  19:	48 8d 44 24 20       	lea    0x20(%rsp),%rax
  1e:	48 89 44 24 10       	mov    %rax,0x10(%rsp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall 
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1c                	ja     0x4f
  33:	48 8b 44 24 18       	mov    0x18(%rsp),%rax
  38:	64                   	fs
  39:	48                   	rex.W
  3a:	2b                   	.byte 0x2b
  3b:	04 25                	add    $0x25,%al
  3d:	28 00                	sub    %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1c                	ja     0x25
   9:	48 8b 44 24 18       	mov    0x18(%rsp),%rax
   e:	64                   	fs
   f:	48                   	rex.W
  10:	2b                   	.byte 0x2b
  11:	04 25                	add    $0x25,%al
  13:	28 00                	sub    %al,(%rax)


The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20240515/202405151008.6ddd1aaf-oliver.sang@intel.com



-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki


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