------------[ cut here ]------------
WARNING: CPU: 0 PID: 10236 at fs/buffer.c:1183 mark_buffer_dirty+0x2a9/0x410 fs/buffer.c:1183
Modules linked in:
CPU: 0 UID: 0 PID: 10236 Comm: syz.3.592 Tainted: G        W           6.16.0-syzkaller-08685-g260f6f4fda93 #0 PREEMPT_{RT,(full)} 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:mark_buffer_dirty+0x2a9/0x410 fs/buffer.c:1183
Code: 4c 89 f7 e8 c9 57 e2 ff 49 8b 3e be 20 00 00 00 5b 41 5c 41 5e 41 5f 5d e9 e4 05 fc ff e8 cf 80 83 ff eb 8c e8 c8 80 83 ff 90 <0f> 0b 90 e9 95 fd ff ff e8 ba 80 83 ff 90 0f 0b 90 e9 bf fd ff ff
RSP: 0018:ffffc90004c1f488 EFLAGS: 00010287
RAX: ffffffff823abd28 RBX: ffff88803e2d0de0 RCX: 0000000000080000
RDX: ffffc900102b4000 RSI: 0000000000001926 RDI: 0000000000001927
RBP: ffff88803da7e001 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1007c5a1bd R12: ffff88806cf67a00
R13: ffff88805d32b250 R14: ffff88803e2d0de0 R15: 0000000000000013
FS:  00007f3070a456c0(0000) GS:ffff888126b1e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fba40bb0368 CR3: 00000000239f4000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 bfs_move_block fs/bfs/file.c:44 [inline]
 bfs_move_blocks fs/bfs/file.c:57 [inline]
 bfs_get_block+0x5da/0xae0 fs/bfs/file.c:126
 __block_write_begin_int+0x6b2/0x1900 fs/buffer.c:2145
 block_write_begin+0x8a/0x120 fs/buffer.c:2256
 bfs_write_begin+0x35/0xd0 fs/bfs/file.c:180
 generic_perform_write+0x29a/0x8c0 mm/filemap.c:4141
 generic_file_write_iter+0x110/0x540 mm/filemap.c:4284
 do_iter_readv_writev+0x580/0x800 fs/read_write.c:-1
 vfs_writev+0x323/0x970 fs/read_write.c:1057
 do_pwritev fs/read_write.c:1153 [inline]
 __do_sys_pwritev2 fs/read_write.c:1211 [inline]
 __se_sys_pwritev2+0x17c/0x2a0 fs/read_write.c:1202
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3072bfeb69
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3070a45038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f3072e26080 RCX: 00007f3072bfeb69
RDX: 0000000000000001 RSI: 00002000000001c0 RDI: 0000000000000005
RBP: 00007f3072c81df1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000e7b R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f3072e26080 R15: 00007fff14b12408
 </TASK>