------------[ cut here ]------------
WARNING: CPU: 0 PID: 15608 at fs/buffer.c:1181 mark_buffer_dirty+0x376/0x3e0 fs/buffer.c:1181
Modules linked in:
CPU: 0 PID: 15608 Comm: syz-executor.1 Not tainted 6.6.0-rc2-next-20230921-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
RIP: 0010:mark_buffer_dirty+0x376/0x3e0 fs/buffer.c:1181
Code: e9 0f 16 89 ff e8 0a 16 89 ff 48 89 ef e8 72 5f e7 ff 5b 5d e9 fb 15 89 ff e8 f6 15 89 ff 0f 0b e9 10 fe ff ff e8 ea 15 89 ff <0f> 0b e9 b7 fc ff ff e8 de 15 89 ff 0f 0b e9 d6 fc ff ff 48 89 df
RSP: 0000:ffffc9000e056fb0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888036c20570 RCX: 0000000000000000
RDX: ffff888027a80000 RSI: ffffffff81ff2456 RDI: 0000000000000001
RBP: ffff88809430c000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 000000000000000f
R13: dffffc0000000000 R14: ffff888029f5a000 R15: ffffed10053eb42c
FS:  00007fa8265bc6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f690dcc56be CR3: 0000000057401000 CR4: 00000000003526f0
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+0x3eb/0xeb0 fs/bfs/file.c:125
 __block_write_begin_int+0x3c0/0x14d0 fs/buffer.c:2118
 __block_write_begin fs/buffer.c:2167 [inline]
 block_write_begin+0xb1/0x490 fs/buffer.c:2226
 bfs_write_begin+0x31/0xd0 fs/bfs/file.c:177
 generic_perform_write+0x278/0x600 mm/filemap.c:3969
 __generic_file_write_iter+0x1f9/0x240 mm/filemap.c:4064
 generic_file_write_iter+0xe3/0x350 mm/filemap.c:4090
 __kernel_write_iter+0x261/0x7e0 fs/read_write.c:517
 __kernel_write+0xf6/0x140 fs/read_write.c:537
 __dump_emit fs/coredump.c:813 [inline]
 dump_emit+0x21d/0x330 fs/coredump.c:850
 elf_core_dump+0x21b6/0x3900 fs/binfmt_elf.c:2121
 do_coredump+0x2c96/0x3fc0 fs/coredump.c:764
 get_signal+0x2434/0x2790 kernel/signal.c:2890
 arch_do_signal_or_restart+0x90/0x7f0 arch/x86/kernel/signal.c:309
 exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
 exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204
 irqentry_exit_to_user_mode+0x9/0x40 kernel/entry/common.c:309
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 002b:0000000020000038 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fa827b9c120 RCX: 00007fa827a7cae9
RDX: 0000000020000040 RSI: 0000000020000030 RDI: 00000000a2001480
RBP: 00007fa827ac847a R08: 00000000200000c0 R09: 00000000200000c0
R10: 0000000020000080 R11: 0000000000000202 R12: 0000000000000000
R13: 000000000000006e R14: 00007fa827b9c120 R15: 00007fff097c0618
 </TASK>