------------[ cut here ]------------
WARNING: CPU: 0 PID: 6464 at fs/buffer.c:1188 mark_buffer_dirty+0x2bb/0x4c0 fs/buffer.c:1188
Modules linked in:
CPU: 0 PID: 6464 Comm: segctord Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:mark_buffer_dirty+0x2bb/0x4c0 fs/buffer.c:1188
Code: 00 00 00 5b 41 5c 41 5e 41 5f 5d e9 9f 9a fc ff e8 ca c5 88 ff 48 89 df 5b 41 5c 41 5e 41 5f 5d e9 0a 09 e8 ff e8 b5 c5 88 ff <0f> 0b e9 84 fd ff ff e8 a9 c5 88 ff 0f 0b e9 b0 fd ff ff e8 9d c5
RSP: 0018:ffffc90019a076f0 EFLAGS: 00010293
RAX: ffffffff81fe4efb RBX: ffff88805e34f488 RCX: ffff888027d08000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc90019a07b01 R08: ffff88805e34f48f R09: 1ffff1100bc69e91
R10: dffffc0000000000 R11: ffffed100bc69e92 R12: 1ffff1100f0fe9c3
R13: ffff8880787f4e28 R14: ffff88805dfdd328 R15: 1ffff1100f0fe9c5
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd465407498 CR3: 00000000629d7000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 nilfs_segctor_collect_dirty_files fs/nilfs2/segment.c:2009 [inline]
 nilfs_segctor_do_construct+0x307/0x68a0 fs/nilfs2/segment.c:2071
 nilfs_segctor_construct+0x17b/0x690 fs/nilfs2/segment.c:2454
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2562 [inline]
 nilfs_segctor_thread+0x536/0x10d0 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>