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Date: Wed, 7 Jun 2023 12:49:55 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Kirill Tkhai <tkhai@...ru>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>,
<linux-kernel@...r.kernel.org>, <linux-mm@...ck.org>,
<akpm@...ux-foundation.org>, <tkhai@...ru>,
<roman.gushchin@...ux.dev>, <vbabka@...e.cz>,
<viro@...iv.linux.org.uk>, <brauner@...nel.org>,
<djwong@...nel.org>, <hughd@...gle.com>, <paulmck@...nel.org>,
<muchun.song@...ux.dev>, <linux-fsdevel@...r.kernel.org>,
<linux-xfs@...r.kernel.org>, <zhengqi.arch@...edance.com>,
<david@...morbit.com>, <oliver.sang@...el.com>
Subject: Re: [PATCH v2 2/3] mm: Split unregister_shrinker() in fast and slow
part
Hello,
kernel test robot noticed "INFO:trying_to_register_non-static_key" on:
commit: 107ed33204f77282d67b90f5c37f34c4b1ec9ffb ("[PATCH v2 2/3] mm: Split unregister_shrinker() in fast and slow part")
url: https://github.com/intel-lab-lkp/linux/commits/Kirill-Tkhai/mm-vmscan-move-shrinker_debugfs_remove-before-synchronize_srcu/20230606-030419
base: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git f8dba31b0a826e691949cd4fdfa5c30defaac8c5
patch link: https://lore.kernel.org/all/168599179360.70911.4102140966715923751.stgit@pro.pro/
patch subject: [PATCH v2 2/3] mm: Split unregister_shrinker() in fast and slow part
in testcase: boot
compiler: clang-15
test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 4G
(please refer to attached dmesg/kmsg for entire log/backtrace)
If you fix the issue, kindly add following tag
| Reported-by: kernel test robot <oliver.sang@...el.com>
| Closes: https://lore.kernel.org/oe-lkp/202306071000.4ad4e5ba-oliver.sang@intel.com
[ 0.538549][ T0] INFO: trying to register non-static key.
[ 0.539249][ T0] The code is fine but needs lockdep annotation, or maybe
[ 0.539385][ T0] you didn't initialize this object before use?
[ 0.539385][ T0] turning off the locking correctness validator.
[ 0.539385][ T0] CPU: 0 PID: 0 Comm: swapper Not tainted 6.4.0-rc5-00004-g107ed33204f7 #1
[ 0.539385][ T0] Call Trace:
[ 0.539385][ T0] dump_stack_lvl (??:?)
[ 0.539385][ T0] dump_stack (??:?)
[ 0.539385][ T0] assign_lock_key (lockdep.c:?)
[ 0.539385][ T0] register_lock_class (lockdep.c:?)
[ 0.539385][ T0] __lock_acquire (lockdep.c:?)
[ 0.539385][ T0] ? lock_acquire (??:?)
[ 0.539385][ T0] ? register_shrinker_prepared (??:?)
[ 0.539385][ T0] ? __might_resched (??:?)
[ 0.539385][ T0] lock_acquire (??:?)
[ 0.539385][ T0] ? register_shrinker_prepared (??:?)
[ 0.539385][ T0] ? __might_resched (??:?)
[ 0.539385][ T0] down_write (??:?)
[ 0.539385][ T0] ? register_shrinker_prepared (??:?)
[ 0.539385][ T0] register_shrinker_prepared (??:?)
[ 0.539385][ T0] sget_fc (??:?)
[ 0.539385][ T0] ? kill_litter_super (??:?)
[ 0.539385][ T0] ? shmem_reconfigure (shmem.c:?)
[ 0.539385][ T0] get_tree_nodev (??:?)
[ 0.539385][ T0] shmem_get_tree (shmem.c:?)
[ 0.539385][ T0] vfs_get_tree (??:?)
[ 0.539385][ T0] vfs_kern_mount (??:?)
[ 0.539385][ T0] kern_mount (??:?)
[ 0.539385][ T0] shmem_init (??:?)
[ 0.539385][ T0] mnt_init (??:?)
[ 0.539385][ T0] vfs_caches_init (??:?)
[ 0.539385][ T0] start_kernel (??:?)
[ 0.539385][ T0] i386_start_kernel (??:?)
[ 0.539385][ T0] startup_32_smp (??:?)
[ 0.539391][ T0] ------------[ cut here ]------------
[ 0.540097][ T0] DEBUG_RWSEMS_WARN_ON(sem->magic != sem): count = 0x1, magic = 0x0, owner = 0x81d77c00, curr 0x81d77c00, list not empty
[ 0.540405][ T0] WARNING: CPU: 0 PID: 0 at kernel/locking/rwsem.c:1364 up_write (??:?)
[ 0.541389][ T0] Modules linked in:
[ 0.542390][ T0] CPU: 0 PID: 0 Comm: swapper Not tainted 6.4.0-rc5-00004-g107ed33204f7 #1
[ 0.543389][ T0] EIP: up_write (??:?)
[ 0.543920][ T0] Code: ee 8f c6 81 39 c1 74 05 bb 7f 8b c4 81 53 52 ff 74 24 08 57 ff 74 24 14 68 44 a3 cb 81 68 6d 1a ce 81 e8 32 68 fb ff 83 c4 1c <0f> 0b 39 f7 0f 85 a8 fe ff ff e9 a8 fe ff ff 0f 0b e9 db fe ff ff
All code
========
0: ee out %al,(%dx)
1: 8f c6 pop %rsi
3: 81 39 c1 74 05 bb cmpl $0xbb0574c1,(%rcx)
9: 7f 8b jg 0xffffffffffffff96
b: c4 81 53 52 (bad)
f: ff 74 24 08 pushq 0x8(%rsp)
13: 57 push %rdi
14: ff 74 24 14 pushq 0x14(%rsp)
18: 68 44 a3 cb 81 pushq $0xffffffff81cba344
1d: 68 6d 1a ce 81 pushq $0xffffffff81ce1a6d
22: e8 32 68 fb ff callq 0xfffffffffffb6859
27: 83 c4 1c add $0x1c,%esp
2a:* 0f 0b ud2 <-- trapping instruction
2c: 39 f7 cmp %esi,%edi
2e: 0f 85 a8 fe ff ff jne 0xfffffffffffffedc
34: e9 a8 fe ff ff jmpq 0xfffffffffffffee1
39: 0f 0b ud2
3b: e9 db fe ff ff jmpq 0xffffffffffffff1b
Code starting with the faulting instruction
===========================================
0: 0f 0b ud2
2: 39 f7 cmp %esi,%edi
4: 0f 85 a8 fe ff ff jne 0xfffffffffffffeb2
a: e9 a8 fe ff ff jmpq 0xfffffffffffffeb7
f: 0f 0b ud2
11: e9 db fe ff ff jmpq 0xfffffffffffffef1
[ 0.544391][ T0] EAX: e6de3575 EBX: 81c48b7f ECX: e6de3575 EDX: 81d67dd0
[ 0.545388][ T0] ESI: 831f4c4c EDI: 00000000 EBP: 81d67ed0 ESP: 81d67ea8
[ 0.546389][ T0] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 EFLAGS: 00210292
[ 0.547388][ T0] CR0: 80050033 CR2: ffd98000 CR3: 02280000 CR4: 00040690
[ 0.548392][ T0] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[ 0.549388][ T0] DR6: fffe0ff0 DR7: 00000400
[ 0.549947][ T0] Call Trace:
[ 0.550391][ T0] ? show_regs (??:?)
[ 0.550910][ T0] ? up_write (??:?)
[ 0.551389][ T0] ? __warn (??:?)
[ 0.551869][ T0] ? up_write (??:?)
[ 0.552389][ T0] ? up_write (??:?)
[ 0.552921][ T0] ? report_bug (??:?)
[ 0.553390][ T0] ? exc_overflow (??:?)
[ 0.554390][ T0] ? handle_bug (traps.c:?)
[ 0.554923][ T0] ? exc_invalid_op (??:?)
[ 0.555390][ T0] ? handle_exception (init_task.c:?)
[ 0.556022][ T0] ? arch_report_meminfo (??:?)
[ 0.556389][ T0] ? exc_overflow (??:?)
[ 0.557389][ T0] ? up_write (??:?)
[ 0.557927][ T0] ? exc_overflow (??:?)
[ 0.558389][ T0] ? up_write (??:?)
[ 0.558904][ T0] register_shrinker_prepared (??:?)
[ 0.559390][ T0] sget_fc (??:?)
[ 0.559887][ T0] ? kill_litter_super (??:?)
[ 0.560390][ T0] ? shmem_reconfigure (shmem.c:?)
[ 0.561390][ T0] get_tree_nodev (??:?)
[ 0.562390][ T0] shmem_get_tree (shmem.c:?)
[ 0.563390][ T0] vfs_get_tree (??:?)
[ 0.563914][ T0] vfs_kern_mount (??:?)
[ 0.564390][ T0] kern_mount (??:?)
[ 0.564908][ T0] shmem_init (??:?)
[ 0.565389][ T0] mnt_init (??:?)
[ 0.565892][ T0] vfs_caches_init (??:?)
[ 0.566390][ T0] start_kernel (??:?)
[ 0.567390][ T0] i386_start_kernel (??:?)
[ 0.568009][ T0] startup_32_smp (??:?)
[ 0.568392][ T0] irq event stamp: 1613
[ 0.568888][ T0] hardirqs last enabled at (1613): _raw_spin_unlock_irqrestore (??:?)
[ 0.569389][ T0] hardirqs last disabled at (1612): _raw_spin_lock_irqsave (??:?)
[ 0.570389][ T0] softirqs last enabled at (1480): do_softirq_own_stack (??:?)
[ 0.571389][ T0] softirqs last disabled at (1473): do_softirq_own_stack (??:?)
[ 0.572389][ T0] ---[ end trace 0000000000000000 ]---
[ 0.573889][ T0] Last level iTLB entries: 4KB 0, 2MB 0, 4MB 0
[ 0.574391][ T0] Last level dTLB entries: 4KB 0, 2MB 0, 4MB 0, 1GB 0
To reproduce:
# build kernel
cd linux
cp config-6.4.0-rc5-00004-g107ed33204f7 .config
make HOSTCC=clang-15 CC=clang-15 ARCH=i386 olddefconfig prepare modules_prepare bzImage modules
make HOSTCC=clang-15 CC=clang-15 ARCH=i386 INSTALL_MOD_PATH=<mod-install-dir> modules_install
cd <mod-install-dir>
find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> -m modules.cgz job-script # job-script is attached in this email
# if come across any failure that blocks the test,
# please remove ~/.lkp and /lkp dir to run from a clean state.
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
View attachment "config-6.4.0-rc5-00004-g107ed33204f7" of type "text/plain" (144016 bytes)
View attachment "job-script" of type "text/plain" (5038 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (33040 bytes)
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