INFO: trying to register non-static key.
The code is fine but needs lockdep annotation, or maybe
you didn't initialize this object before use?
turning off the locking correctness validator.
CPU: 1 PID: 4557 Comm: gfs2_quotad Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x168/0x22e lib/dump_stack.c:106
 assign_lock_key+0x1f5/0x230 kernel/locking/lockdep.c:974
 register_lock_class+0x20e/0x860 kernel/locking/lockdep.c:1287
 __lock_acquire+0x160/0x7c50 kernel/locking/lockdep.c:4928
 lock_acquire+0x1b4/0x490 kernel/locking/lockdep.c:5662
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xa4/0xf0 kernel/locking/spinlock.c:162
 finish_wait+0xb8/0x1d0 kernel/sched/wait.c:410
 gfs2_quotad+0x4e6/0x670 fs/gfs2/quota.c:1579
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
list_del corruption. prev->next should be ffffc9000491fe58, but was 0000000000000000. (prev=ffff8880549d8bd8)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:61!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 4557 Comm: gfs2_quotad Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__list_del_entry_valid+0x10a/0x120 lib/list_debug.c:59
Code: e8 4b ef f9 05 0f 0b 48 c7 c7 60 fd be 8a 48 89 de e8 3a ef f9 05 0f 0b 48 c7 c7 c0 fd be 8a 48 89 de 4c 89 f9 e8 26 ef f9 05 <0f> 0b 48 c7 c7 40 fe be 8a 48 89 de 4c 89 f1 e8 12 ef f9 05 0f 0b
RSP: 0018:ffffc9000491fd30 EFLAGS: 00010046
RAX: 000000000000006d RBX: ffffc9000491fe58 RCX: a6a4925db395c000
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: dffffc0000000000 R08: dffffc0000000000 R09: ffffed10171e4f34
R10: ffffed10171e4f34 R11: 1ffff110171e4f33 R12: dffffc0000000000
R13: ffff8880549d8b98 R14: ffff8880549d8bd8 R15: ffff8880549d8bd8
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe1c4372a60 CR3: 0000000054bae000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_del_entry include/linux/list.h:134 [inline]
 list_del_init include/linux/list.h:206 [inline]
 finish_wait+0xc3/0x1d0 kernel/sched/wait.c:411
 gfs2_quotad+0x4e6/0x670 fs/gfs2/quota.c:1579
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid+0x10a/0x120 lib/list_debug.c:59
Code: e8 4b ef f9 05 0f 0b 48 c7 c7 60 fd be 8a 48 89 de e8 3a ef f9 05 0f 0b 48 c7 c7 c0 fd be 8a 48 89 de 4c 89 f9 e8 26 ef f9 05 <0f> 0b 48 c7 c7 40 fe be 8a 48 89 de 4c 89 f1 e8 12 ef f9 05 0f 0b
RSP: 0018:ffffc9000491fd30 EFLAGS: 00010046
RAX: 000000000000006d RBX: ffffc9000491fe58 RCX: a6a4925db395c000
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: dffffc0000000000 R08: dffffc0000000000 R09: ffffed10171e4f34
R10: ffffed10171e4f34 R11: 1ffff110171e4f33 R12: dffffc0000000000
R13: ffff8880549d8b98 R14: ffff8880549d8bd8 R15: ffff8880549d8bd8
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe1c4372a60 CR3: 0000000054bae000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400