------------[ cut here ]------------ WARNING: CPU: 0 PID: 6750 at fs/buffer.c:1193 mark_buffer_dirty+0x2dd/0x500 Modules linked in: CPU: 0 PID: 6750 Comm: segctord Not tainted 6.5.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 RIP: 0010:mark_buffer_dirty+0x2dd/0x500 fs/buffer.c:1193 Code: df e8 a7 12 e0 ff 48 8b 3b be 04 00 00 00 5b 41 5c 41 5e 41 5f 5d e9 62 5d fc ff e8 cd 31 87 ff e9 71 ff ff ff e8 c3 31 87 ff <0f> 0b e9 6d fd ff ff e8 b7 31 87 ff 0f 0b e9 96 fd ff ff e8 ab 31 RSP: 0018:ffffc900055bf6b0 EFLAGS: 00010293 RAX: ffffffff820486bd RBX: ffff88803c1c0701 RCX: ffff888020fbd940 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff82048424 R09: 1ffff1100f169f5c R10: dffffc0000000000 R11: ffffed100f169f5d R12: ffff888078b4fae0 R13: 1ffff110078388f8 R14: ffff88803c1c47c0 R15: ffff88803c1c47b0 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8531178038 CR3: 000000003220f000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: nilfs_segctor_collect_dirty_files fs/nilfs2/segment.c:2000 [inline] nilfs_segctor_do_construct+0x352/0x6e30 fs/nilfs2/segment.c:2062 nilfs_segctor_construct+0x145/0x8c0 fs/nilfs2/segment.c:2416 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2524 [inline] nilfs_segctor_thread+0x53a/0x1140 fs/nilfs2/segment.c:2607 kthread+0x2b8/0x350 kernel/kthread.c:389 ret_from_fork+0x2e/0x60 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304