------------[ cut here ]------------
WARNING: CPU: 2 PID: 8515 at fs/buffer.c:1183 mark_buffer_dirty+0x3cb/0x440 fs/buffer.c:1183
Modules linked in:
CPU: 2 PID: 8515 Comm: segctord Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:mark_buffer_dirty+0x3cb/0x440 fs/buffer.c:1183
Code: e8 0a 18 82 ff 48 89 ef e8 62 b0 e5 ff 5b 5d 41 5c e9 f9 17 82 ff e8 f4 17 82 ff 90 0f 0b 90 e9 d1 fd ff ff e8 e6 17 82 ff 90 <0f> 0b 90 e9 63 fc ff ff e8 d8 17 82 ff 90 0f 0b 90 e9 8a fc ff ff
RSP: 0018:ffffc90003357a60 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888030326658 RCX: ffffffff820bc9cd
RDX: ffff888025740000 RSI: ffffffff820bcd6a RDI: 0000000000000001
RBP: ffffc90003357c00 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: ffff888054be4e28 R14: ffff888054be4ce0 R15: ffff888054be4e18
FS:  0000000000000000(0000) GS:ffff88806b200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000047a32000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 nilfs_segctor_collect_dirty_files fs/nilfs2/segment.c:1958 [inline]
 nilfs_segctor_do_construct+0x56f/0x7e60 fs/nilfs2/segment.c:2020
 nilfs_segctor_construct+0x748/0x900 fs/nilfs2/segment.c:2408
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2516 [inline]
 nilfs_segctor_thread+0x3a7/0xd60 fs/nilfs2/segment.c:2601
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>