------------[ cut here ]------------
WARNING: CPU: 1 PID: 28542 at fs/buffer.c:1081 mark_buffer_dirty+0x394/0x7d0
Modules linked in:
CPU: 1 PID: 28542 Comm: syz-executor.1 Not tainted 6.1.69-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:mark_buffer_dirty+0x394/0x7d0 fs/buffer.c:1081
Code: fa e0 ff 48 8b 7d 00 be 04 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d e9 4b 6b fc ff e8 96 99 89 ff e9 42 ff ff ff e8 8c 99 89 ff <0f> 0b e9 b3 fc ff ff e8 80 99 89 ff 0f 0b e9 f6 fc ff ff e8 74 99
RSP: 0018:ffffc9001599eba0 EFLAGS: 00010293
RAX: ffffffff8200f484 RBX: ffff888019bdc001 RCX: ffff888029008000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8200f131 R09: ffffed1011d6d55d
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000011
R13: ffff88808e8c49f8 R14: ffff88808eb6aae0 R15: ffff88808eb6aae0
FS:  00007f1a686c16c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1aff642e70 CR3: 000000007a356000 CR4: 00000000003506e0
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+0x852/0xac0 fs/bfs/file.c:125
 __block_write_begin_int+0x544/0x1a30 fs/buffer.c:1991
 __block_write_begin fs/buffer.c:2041 [inline]
 block_write_begin+0x98/0x1f0 fs/buffer.c:2102
 bfs_write_begin+0x31/0xd0 fs/bfs/file.c:177
 generic_perform_write+0x2fc/0x5e0 mm/filemap.c:3808
 __generic_file_write_iter+0x176/0x400 mm/filemap.c:3936
 generic_file_write_iter+0xab/0x310 mm/filemap.c:3968
 __kernel_write_iter+0x2ff/0x710 fs/read_write.c:517
 __kernel_write+0x11c/0x170 fs/read_write.c:537
 __dump_emit+0x232/0x350 fs/coredump.c:804
 elf_core_dump+0x3511/0x4590 fs/binfmt_elf.c:2291
 do_coredump+0x18b7/0x2700 fs/coredump.c:755
 get_signal+0x1454/0x17d0 kernel/signal.c:2848
 arch_do_signal_or_restart+0xb0/0x1a10 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
 irqentry_exit_to_user_mode+0x5/0x40 kernel/entry/common.c:310
 exc_page_fault+0x1c0/0x660 arch/x86/mm/fault.c:1530
 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7f1a6787ccf1
Code: c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f
RSP: 002b:0000000000000030 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f1a6799bf80 RCX: 00007f1a6787cce9
RDX: 0000000000000000 RSI: 0000000000000030 RDI: 0000000000020000
RBP: 00007f1a678c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 000000000000000b R14: 00007f1a6799bf80 R15: 00007fff1c3d1188
 </TASK>