------------[ cut here ]------------
WARNING: CPU: 0 PID: 7619 at fs/buffer.c:1188 mark_buffer_dirty+0x2bb/0x4d0 fs/buffer.c:1188
Modules linked in:
CPU: 0 PID: 7619 Comm: segctord Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:mark_buffer_dirty+0x2bb/0x4d0 fs/buffer.c:1188
Code: 00 00 00 5b 41 5c 41 5e 41 5f 5d e9 bf ac fc ff e8 aa fe 89 ff 48 89 df 5b 41 5c 41 5e 41 5f 5d e9 5a 5a e8 ff e8 95 fe 89 ff <0f> 0b e9 84 fd ff ff e8 89 fe 89 ff 0f 0b e9 b0 fd ff ff e8 7d fe
RSP: 0018:ffffc900036876f0 EFLAGS: 00010293
RAX: ffffffff81fb90cb RBX: ffff888077b899f8 RCX: ffff888027ebbc00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc90003687b01 R08: ffff888077b899ff R09: 1ffff1100ef7133f
R10: dffffc0000000000 R11: ffffed100ef71340 R12: 1ffff1100bd2e5c2
R13: ffff88805e972e20 R14: ffff88805e973478 R15: 1ffff1100bd2e5c4
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555590c2f5c8 CR3: 0000000062465000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 nilfs_segctor_collect_dirty_files fs/nilfs2/segment.c:2009 [inline]
 nilfs_segctor_do_construct+0x32c/0x6870 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+0x4f6/0x1000 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>