------------[ cut here ]------------
WARNING: CPU: 0 PID: 6435 at fs/buffer.c:1084 mark_buffer_dirty+0x318/0x490 fs/buffer.c:1084
Modules linked in:
CPU: 0 PID: 6435 Comm: syz.3.378 Not tainted 5.15.184-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:mark_buffer_dirty+0x318/0x490 fs/buffer.c:1084
Code: 89 f7 e8 5b 7f e6 ff 49 8b 3e be 04 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d e9 f4 d0 fc ff e8 6f 09 a1 ff eb 80 e8 68 09 a1 ff <0f> 0b e9 33 fd ff ff e8 5c 09 a1 ff 0f 0b e9 55 fd ff ff e8 50 09
RSP: 0018:ffffc9000309f668 EFLAGS: 00010287
RAX: ffffffff81d6b7d8 RBX: ffff8880513b09f8 RCX: 0000000000080000
RDX: ffffc900127c9000 RSI: 0000000000013e6e RDI: 0000000000013e6f
RBP: ffff88807cbfc018 R08: dffffc0000000000 R09: ffffed100b2d4100
R10: 0000000000000000 R11: 0000000000000040 R12: ffff88805da18200
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff1100a27613f
FS:  00007f1c72f056c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007eff2d331000 CR3: 00000000534b6000 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
 __block_write_begin fs/buffer.c:2062 [inline]
 block_write_begin+0x4d/0xc0 fs/buffer.c:2122
 bfs_write_begin+0x37/0xd0 fs/bfs/file.c:177
 generic_perform_write+0x2aa/0x530 mm/filemap.c:3785
 __generic_file_write_iter+0x25f/0x4e0 mm/filemap.c:3912
 generic_file_write_iter+0xa6/0x1b0 mm/filemap.c:3944
 do_iter_readv_writev+0x497/0x600 fs/read_write.c:-1
 do_iter_write+0x205/0x7b0 fs/read_write.c:855
 vfs_writev fs/read_write.c:928 [inline]
 do_pwritev+0x204/0x340 fs/read_write.c:1025
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f1c7509d969
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:00007f1c72f05038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f1c752c4fa0 RCX: 00007f1c7509d969
RDX: 0000000000000001 RSI: 00002000000001c0 RDI: 000000000000000a
RBP: 00007f1c7511fab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000e7b R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1c752c4fa0 R15: 00007ffda4728518
 </TASK>