------------[ cut here ]------------
WARNING: CPU: 0 PID: 11883 at fs/buffer.c:1188 mark_buffer_dirty+0x2bb/0x4d0 fs/buffer.c:1188
Modules linked in:
CPU: 0 PID: 11883 Comm: segctord Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:mark_buffer_dirty+0x2bb/0x4d0 fs/buffer.c:1188
Code: 00 00 00 5b 41 5c 41 5e 41 5f 5d e9 ff 97 fc ff e8 5a 73 88 ff 48 89 df 5b 41 5c 41 5e 41 5f 5d e9 7a 11 e8 ff e8 45 73 88 ff <0f> 0b e9 84 fd ff ff e8 39 73 88 ff 0f 0b e9 b0 fd ff ff e8 2d 73
RSP: 0018:ffffc90011e6f730 EFLAGS: 00010293
RAX: ffffffff81fe720b RBX: ffff888030496d98 RCX: ffff88805ec88000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc90011e6fc01 R08: ffff888030496d9f R09: 1ffff11006092db3
R10: dffffc0000000000 R11: ffffed1006092db4 R12: 1ffff1100ee5a9c3
R13: ffff8880772d4e28 R14: ffff8880772d4018 R15: 1ffff1100ee5a9c5
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffcb7c83d50 CR3: 000000004fe95000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 nilfs_segctor_collect_dirty_files fs/nilfs2/segment.c:2009 [inline]
 nilfs_segctor_do_construct+0x315/0x69e0 fs/nilfs2/segment.c:2071
 nilfs_segctor_construct+0x170/0x690 fs/nilfs2/segment.c:2454
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2562 [inline]
 nilfs_segctor_thread+0x52b/0x1050 fs/nilfs2/segment.c:2646
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>