------------[ cut here ]------------
WARNING: CPU: 0 PID: 13153 at fs/buffer.c:1084 mark_buffer_dirty+0x318/0x490 fs/buffer.c:1084
Modules linked in:
CPU: 0 PID: 13153 Comm: syz.6.2506 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:mark_buffer_dirty+0x318/0x490 fs/buffer.c:1084
Code: 89 f7 e8 8b 7f e6 ff 49 8b 3e be 04 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d e9 c4 d0 fc ff e8 5f 17 a2 ff eb 80 e8 58 17 a2 ff <0f> 0b e9 33 fd ff ff e8 4c 17 a2 ff 0f 0b e9 55 fd ff ff e8 40 17
RSP: 0018:ffffc90002fbf7c8 EFLAGS: 00010287
RAX: ffffffff81d5b3c8 RBX: ffff88805a5adcb0 RCX: 0000000000080000
RDX: ffffc900177e5000 RSI: 000000000001d47a RDI: 000000000001d47b
RBP: ffff888067048018 R08: dffffc0000000000 R09: ffffed100b2e4ec0
R10: 0000000000000000 R11: 0000000000000040 R12: ffff888056837200
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff1100b4b5b96
FS:  00007f09ecfc56c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f09ecfa3f98 CR3: 0000000043758000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bfs_move_block fs/bfs/file.c:43 [inline]
 bfs_move_blocks fs/bfs/file.c:56 [inline]
 bfs_get_block+0x814/0xa60 fs/bfs/file.c:125
 __block_write_begin_int+0x54e/0x15a0 fs/buffer.c:2012