------------[ cut here ]------------
WARNING: CPU: 0 PID: 5976 at fs/buffer.c:1177 mark_buffer_dirty+0x2e5/0x520 fs/buffer.c:1177
Modules linked in:
CPU: 0 UID: 0 PID: 5976 Comm: segctord Not tainted 6.12.0-rc7-syzkaller-00125-gcfaaa7d010d1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:mark_buffer_dirty+0x2e5/0x520 fs/buffer.c:1177
Code: 89 df e8 ee 7a db ff 48 8b 3b be 20 00 00 00 5b 41 5e 41 5f 5d e9 fb e8 fb ff e8 66 c1 74 ff e9 73 ff ff ff e8 5c c1 74 ff 90 <0f> 0b 90 e9 61 fd ff ff e8 4e c1 74 ff 90 0f 0b 90 e9 88 fd ff ff
RSP: 0018:ffffc9000b3cf758 EFLAGS: 00010293
RAX: ffffffff82202854 RBX: ffff88805ebe3401 RCX: ffff8880337f5a00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff822025b1 R09: 1ffff1100b4d493f
R10: dffffc0000000000 R11: ffffed100b4d4940 R12: 1ffff1100bd7c5bb
R13: 1ffff1100bd7c5bd R14: ffff88805a6a49f8 R15: ffff88805ebe2dd8
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000003354e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 nilfs_segctor_collect_dirty_files fs/nilfs2/segment.c:2033 [inline]
 nilfs_segctor_do_construct+0x33e/0x6b90 fs/nilfs2/segment.c:2095
 nilfs_segctor_construct+0x181/0x6b0 fs/nilfs2/segment.c:2479
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2587 [inline]
 nilfs_segctor_thread+0x69e/0xe80 fs/nilfs2/segment.c:2701
 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>