syzbot

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kernel BUG at fs/notify/dnotify/dnotify.c:135!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 0 UID: 0 PID: 12 Comm: kworker/u8:1 Not tainted 6.12.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Workqueue: events_unbound fsnotify_mark_destroy_workfn
RIP: 0010:dnotify_free_mark+0x58/0x60 fs/notify/dnotify/dnotify.c:135
Code: 89 df e8 0b ca d8 ff 48 83 3b 00 75 17 e8 00 0f 72 ff 48 8b 3d d1 ec 0d 0c 4c 89 f6 5b 41 5e e9 5e d5 cc ff e8 e9 0e 72 ff 90 <0f> 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90000117ae8 EFLAGS: 00010293
RAX: ffffffff8222dac7 RBX: ffff88805a5ce080 RCX: ffff88801bee5a00
RDX: 0000000000000000 RSI: ffffffff8c0acaa0 RDI: ffff88805a5ce000
RBP: ffffc90000117bb0 R08: ffffffff9429b8bf R09: 1ffffffff2853717
R10: dffffc0000000000 R11: ffffffff8222da70 R12: ffff88801c7f1000
R13: ffffc90000117b40 R14: ffff88805a5ce000 R15: ffff88805a5ce000
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055da6834ee58 CR3: 000000000e734000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 fsnotify_final_mark_destroy fs/notify/mark.c:359 [inline]
 fsnotify_mark_destroy_workfn+0x2cf/0x350 fs/notify/mark.c:986
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dnotify_free_mark+0x58/0x60 fs/notify/dnotify/dnotify.c:135
Code: 89 df e8 0b ca d8 ff 48 83 3b 00 75 17 e8 00 0f 72 ff 48 8b 3d d1 ec 0d 0c 4c 89 f6 5b 41 5e e9 5e d5 cc ff e8 e9 0e 72 ff 90 <0f> 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90