------------[ cut here ]------------ WARNING: CPU: 0 PID: 16659 at fs/buffer.c:1081 mark_buffer_dirty+0x394/0x7d0 Modules linked in: CPU: 0 PID: 16659 Comm: segctord Not tainted 6.1.123-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:mark_buffer_dirty+0x394/0x7d0 fs/buffer.c:1081 Code: ba e0 ff 48 8b 7d 00 be 04 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d e9 0b 6a fc ff e8 e6 25 89 ff e9 42 ff ff ff e8 dc 25 89 ff <0f> 0b e9 b3 fc ff ff e8 d0 25 89 ff 0f 0b e9 f6 fc ff ff e8 c4 25 RSP: 0018:ffffc9000452f6c8 EFLAGS: 00010293 RAX: ffffffff82017624 RBX: ffff88801f675801 RCX: ffff88802dd28000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff820172d1 R09: ffffed1009f29caf R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff11009f455c2 R13: 1ffff11009f455c4 R14: ffff88804fa2ae20 R15: ffff88804f94e570 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f46edc34068 CR3: 000000005f41e000 CR4: 00000000003506f0 Call Trace: nilfs_segctor_collect_dirty_files fs/nilfs2/segment.c:2006 [inline] nilfs_segctor_do_construct+0x33c/0x7100 fs/nilfs2/segment.c:2068 nilfs_segctor_construct+0x181/0x6a0 fs/nilfs2/segment.c:2451 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2559 [inline] nilfs_segctor_thread+0x552/0x11a0 fs/nilfs2/segment.c:2643 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295