------------[ cut here ]------------
WARNING: CPU: 1 PID: 5009 at fs/buffer.c:1130 mark_buffer_dirty+0x376/0x3e0 fs/buffer.c:1130
Modules linked in:
CPU: 1 PID: 5009 Comm: syz-executor404 Not tainted 6.4.0-rc4-syzkaller-00198-g9e87b63ed37e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:mark_buffer_dirty+0x376/0x3e0 fs/buffer.c:1130
Code: e9 8f 77 8d ff e8 8a 77 8d ff 48 89 ef e8 b2 13 e8 ff 5b 5d e9 7b 77 8d ff e8 76 77 8d ff 0f 0b e9 10 fe ff ff e8 6a 77 8d ff <0f> 0b e9 b7 fc ff ff e8 5e 77 8d ff 0f 0b e9 d6 fc ff ff 48 89 df
RSP: 0018:ffffc90003aeefc0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888074a5c488 RCX: 0000000000000000
RDX: ffff8880287e1dc0 RSI: ffffffff81f6ced6 RDI: 0000000000000001
RBP: ffff8880749f1000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88807c87c000
R13: ffffed100f90f82c R14: ffff888074a5c488 R15: 0000000000000012
FS:  0000555556527300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000079ccb000 CR4: 0000000000350ee0
Call Trace:
 <TASK>
 bfs_move_block fs/bfs/file.c:43 [inline]
 bfs_move_blocks fs/bfs/file.c:56 [inline]
 bfs_get_block+0x39b/0xdd0 fs/bfs/file.c:125
 __block_write_begin_int+0x3bd/0x14b0 fs/buffer.c:2064
 __block_write_begin fs/buffer.c:2114 [inline]
 block_write_begin+0xb9/0x4d0 fs/buffer.c:2175
 bfs_write_begin+0x31/0xd0 fs/bfs/file.c:177
 generic_perform_write+0x256/0x570 mm/filemap.c:3923
 __generic_file_write_iter+0x2ae/0x500 mm/filemap.c:4051
 generic_file_write_iter+0xe3/0x350 mm/filemap.c:4083
 __kernel_write_iter+0x262/0x7a0 fs/read_write.c:517
 __kernel_write+0xcb/0x110 fs/read_write.c:537
 __dump_emit fs/coredump.c:813 [inline]
 dump_emit+0x21d/0x340 fs/coredump.c:850
 elf_core_dump+0x2289/0x36e0 fs/binfmt_elf.c:2121
 do_coredump+0x2f2b/0x4020 fs/coredump.c:764
 get_signal+0x1c02/0x25b0 kernel/signal.c:2862
 arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
 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:310
 exc_page_fault+0xc0/0x170 arch/x86/mm/fault.c:1593
 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:0000000020000008 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 000000000000001c RCX: 00007ffa66653f69
RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000000
RBP: 0000000000000003 R08: 0000000000000000 R09: 00007fff00000004
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000031
R13: 000000000000000c R14: 00007ffff846a380 R15: 00007ffff846a342
 </TASK>