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Message-ID: <202408230938.43f55b4-lkp@intel.com>
Date: Fri, 23 Aug 2024 10:33:10 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Zhiguo Jiang <justinjiang@...o.com>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>, <linux-mm@...ck.org>, "Andrew
 Morton" <akpm@...ux-foundation.org>, <linux-kernel@...r.kernel.org>,
	<opensource.kernel@...o.com>, Zhiguo Jiang <justinjiang@...o.com>,
	<oliver.sang@...el.com>
Subject: Re: [PATCH] mm: vma remove the redundant avc binded with old folio



Hello,

kernel test robot noticed "WARNING:at_mm/rmap.c:#unlink_anon_vmas" on:

commit: ae307233d6efc18c3d6015b127b099450ca8588e ("[PATCH] mm: vma remove the redundant avc binded with old folio")
url: https://github.com/intel-lab-lkp/linux/commits/Zhiguo-Jiang/mm-vma-remove-the-redundant-avc-binded-with-old-folio/20240820-223531
base: https://git.kernel.org/cgit/linux/kernel/git/akpm/mm.git mm-everything
patch link: https://lore.kernel.org/all/20240820143359.199-1-justinjiang@vivo.com/
patch subject: [PATCH] mm: vma remove the redundant avc binded with old folio

in testcase: boot

compiler: gcc-12
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G

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


+----------------------------------------+------------+------------+
|                                        | 75bee94793 | ae307233d6 |
+----------------------------------------+------------+------------+
| WARNING:at_mm/rmap.c:#unlink_anon_vmas | 0          | 6          |
| RIP:unlink_anon_vmas                   | 0          | 6          |
+----------------------------------------+------------+------------+


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/202408230938.43f55b4-lkp@intel.com


[   36.655884][  T197] ------------[ cut here ]------------
[ 36.656843][ T197] WARNING: CPU: 1 PID: 197 at mm/rmap.c:443 unlink_anon_vmas (mm/rmap.c:443 (discriminator 1)) 
[   36.658183][  T197] Modules linked in: sg ata_piix libata crc32_pclmul crc32c_intel scsi_mod polyval_clmulni polyval_generic ghash_clmulni_intel sha512_ssse3 aesni_intel scsi_common cmdlinepart
[   36.660508][  T197] CPU: 1 UID: 0 PID: 197 Comm: lkp-bootstrap Tainted: G                T  6.11.0-rc3-00378-gae307233d6ef #1 5ff8330b382acbcd2719e520175822ac6c64d0eb
[   36.662685][  T197] Tainted: [T]=RANDSTRUCT
[ 36.663288][ T197] RIP: 0010:unlink_anon_vmas (mm/rmap.c:443 (discriminator 1)) 
[ 36.668434][ T197] Code: 7f fe ff ff 48 83 c4 28 5b 5d 41 5c 41 5d 41 5e 41 5f 31 c0 31 d2 31 c9 31 f6 31 ff 45 31 c0 45 31 c9 c3 90 0f 0b 90 eb ad 90 <0f> 0b 90 eb 82 90 0f 0b 90 48 8d 7e 08 e8 2d a2 bf ff e9 ca fc ff
All code
========
   0:	7f fe                	jg     0x0
   2:	ff                   	(bad)
   3:	ff 48 83             	decl   -0x7d(%rax)
   6:	c4                   	(bad)
   7:	28 5b 5d             	sub    %bl,0x5d(%rbx)
   a:	41 5c                	pop    %r12
   c:	41 5d                	pop    %r13
   e:	41 5e                	pop    %r14
  10:	41 5f                	pop    %r15
  12:	31 c0                	xor    %eax,%eax
  14:	31 d2                	xor    %edx,%edx
  16:	31 c9                	xor    %ecx,%ecx
  18:	31 f6                	xor    %esi,%esi
  1a:	31 ff                	xor    %edi,%edi
  1c:	45 31 c0             	xor    %r8d,%r8d
  1f:	45 31 c9             	xor    %r9d,%r9d
  22:	c3                   	ret
  23:	90                   	nop
  24:	0f 0b                	ud2
  26:	90                   	nop
  27:	eb ad                	jmp    0xffffffffffffffd6
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	eb 82                	jmp    0xffffffffffffffb1
  2f:	90                   	nop
  30:	0f 0b                	ud2
  32:	90                   	nop
  33:	48 8d 7e 08          	lea    0x8(%rsi),%rdi
  37:	e8 2d a2 bf ff       	call   0xffffffffffbfa269
  3c:	e9                   	.byte 0xe9
  3d:	ca fc ff             	lret   $0xfffc

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	eb 82                	jmp    0xffffffffffffff87
   5:	90                   	nop
   6:	0f 0b                	ud2
   8:	90                   	nop
   9:	48 8d 7e 08          	lea    0x8(%rsi),%rdi
   d:	e8 2d a2 bf ff       	call   0xffffffffffbfa23f
  12:	e9                   	.byte 0xe9
  13:	ca fc ff             	lret   $0xfffc
[   36.671148][  T197] RSP: 0000:ffffc900019ffad8 EFLAGS: 00010202
[   36.671931][  T197] RAX: 1ffff1102e73f0bf RBX: ffff888173c55ab0 RCX: 0000000000000000
[   36.672880][  T197] RDX: 1ffff110241d68e2 RSI: 0000000000000000 RDI: ffff8881739f85f8
[   36.673933][  T197] RBP: ffff888120eb4700 R08: 0000000000000000 R09: 0000000000000000
[   36.675002][  T197] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881739f8550
[   36.676082][  T197] R13: ffff888173c55aa0 R14: dffffc0000000000 R15: ffff888120eb4710
[   36.677134][  T197] FS:  0000000000000000(0000) GS:ffff8883af300000(0000) knlGS:0000000000000000
[   36.678328][  T197] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   36.679207][  T197] CR2: 000000005663e33c CR3: 000000012021c000 CR4: 00000000000406b0
[   36.680251][  T197] Call Trace:
[   36.680681][  T197]  <TASK>
[ 36.681079][ T197] ? __warn (kernel/panic.c:735) 
[ 36.681682][ T197] ? unlink_anon_vmas (mm/rmap.c:443 (discriminator 1)) 
[ 36.682312][ T197] ? report_bug (lib/bug.c:180 lib/bug.c:219) 
[ 36.682920][ T197] ? handle_bug (arch/x86/kernel/traps.c:239) 
[ 36.683494][ T197] ? exc_invalid_op (arch/x86/kernel/traps.c:260 (discriminator 1)) 
[ 36.684125][ T197] ? asm_exc_invalid_op (arch/x86/include/asm/idtentry.h:621) 
[ 36.684804][ T197] ? unlink_anon_vmas (mm/rmap.c:443 (discriminator 1)) 
[ 36.685501][ T197] ? unlink_anon_vmas (mm/rmap.c:400) 
[ 36.686185][ T197] free_pgtables (mm/memory.c:410) 
[ 36.686819][ T197] ? free_pgd_range (mm/memory.c:367) 
[ 36.687466][ T197] ? preempt_count_add (include/linux/ftrace.h:976 kernel/sched/core.c:5634 kernel/sched/core.c:5659) 
[ 36.688179][ T197] exit_mmap (mm/mmap.c:1934) 
[ 36.688758][ T197] ? trace_contention_end (include/trace/events/lock.h:122 (discriminator 52)) 
[ 36.689496][ T197] ? do_vma_munmap (mm/mmap.c:1895) 
[ 36.690125][ T197] ? __mutex_lock (arch/x86/include/asm/preempt.h:103 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) 
[ 36.690779][ T197] ? __mutex_unlock_slowpath (arch/x86/include/asm/atomic64_64.h:101 include/linux/atomic/atomic-arch-fallback.h:4329 include/linux/atomic/atomic-long.h:1506 include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:929) 
[ 36.691585][ T197] __mmput (kernel/fork.c:1346) 
[ 36.692143][ T197] exit_mm (kernel/exit.c:572) 
[ 36.692699][ T197] do_exit (arch/x86/include/asm/jump_label.h:27 include/linux/jump_label.h:207 include/trace/events/sched.h:333 kernel/exit.c:930) 
[ 36.693256][ T197] ? do_raw_spin_lock (arch/x86/include/asm/atomic.h:107 include/linux/atomic/atomic-arch-fallback.h:2170 include/linux/atomic/atomic-instrumented.h:1302 include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 36.693947][ T197] ? stack_not_used (kernel/exit.c:878) 
[ 36.694605][ T197] ? _raw_spin_unlock_irq (arch/x86/include/asm/irqflags.h:42 arch/x86/include/asm/irqflags.h:97 include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 36.695304][ T197] do_group_exit (kernel/exit.c:1069) 
[ 36.695908][ T197] __ia32_sys_exit_group (kernel/exit.c:1097) 
[ 36.696561][ T197] ia32_sys_call (??:?) 
[ 36.697142][ T197] do_int80_emulation (arch/x86/entry/common.c:165 arch/x86/entry/common.c:253) 
[ 36.697852][ T197] asm_int80_emulation (arch/x86/include/asm/idtentry.h:626) 
[   36.698504][  T197] RIP: 0023:0xf7f03092
[ 36.699039][ T197] Code: Unable to access opcode bytes at 0xf7f03068.

Code starting with the faulting instruction
===========================================
[   36.699967][  T197] RSP: 002b:00000000ffcfddd8 EFLAGS: 00000296 ORIG_RAX: 00000000000000fc
[   36.701055][  T197] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000003323d2f
[   36.702120][  T197] RDX: 00000000ffcfde00 RSI: 0000000056633734 RDI: 00000000f7ef8000
[   36.703147][  T197] RBP: 00000000ffcfdef8 R08: 0000000000000000 R09: 0000000000000000
[   36.704165][  T197] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   36.705185][  T197] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   36.706281][  T197]  </TASK>
[   36.706698][  T197] irq event stamp: 10051
[ 36.707257][ T197] hardirqs last enabled at (10059): console_unlock (arch/x86/include/asm/irqflags.h:26 arch/x86/include/asm/irqflags.h:87 arch/x86/include/asm/irqflags.h:147 kernel/printk/printk.c:341 kernel/printk/printk.c:2801 kernel/printk/printk.c:3120) 
[ 36.708455][ T197] hardirqs last disabled at (10066): console_unlock (kernel/printk/printk.c:339 kernel/printk/printk.c:2801 kernel/printk/printk.c:3120) 
[ 36.709660][ T197] softirqs last enabled at (10006): handle_softirqs (arch/x86/include/asm/preempt.h:26 kernel/softirq.c:401 kernel/softirq.c:582) 
[ 36.710805][ T197] softirqs last disabled at (9997): irq_exit_rcu (kernel/softirq.c:589 kernel/softirq.c:428 kernel/softirq.c:637 kernel/softirq.c:649) 
[   36.711941][  T197] ---[ end trace 0000000000000000 ]---


The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20240823/202408230938.43f55b4-lkp@intel.com



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


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