------------[ cut here ]------------
WARNING: CPU: 0 PID: 4558 at fs/buffer.c:1084 mark_buffer_dirty+0x325/0x4b0 fs/buffer.c:-1
Modules linked in:
CPU: 1 PID: 4558 Comm: syz-executor.0 Not tainted 5.15.180-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:mark_buffer_dirty+0x325/0x4b0 fs/buffer.c:1084
Code: 89 df e8 fe b3 e4 ff 48 8b 3b be 04 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d e9 c7 81 fc ff e8 52 c3 9a ff eb 80 e8 4b c3 9a ff <0f> 0b e9 27 fd ff ff e8 3f c3 9a ff 0f 0b e9 46 fd ff ff e8 33 c3
RSP: 0018:ffffc9000304ebc0 EFLAGS: 00010293
RAX: ffffffff81e57ef5 RBX: ffff88807b879000 RCX: ffff88807e1dbb80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff81e57c14 R09: ffffed100dd9de40
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888071c3dcb0
R13: dffffc0000000000 R14: 1ffff1100e387b96 R15: dffffc0000000000
FS:  00007fcce00f36c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fccd7cda000 CR3: 0000000078028000 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+0x852/0xac0 fs/bfs/file.c:125
 __block_write_begin_int+0x60b/0x1650 fs/buffer.c:2012
 __block_write_begin fs/buffer.c:2062 [inline]
 block_write_begin+0x4f/0xc0 fs/buffer.c:2122
 bfs_write_begin+0x38/0xd0 fs/bfs/file.c:177
 generic_perform_write+0x2bf/0x5b0 mm/filemap.c:3785
 __generic_file_write_iter+0x243/0x4f0 mm/filemap.c:3912
 generic_file_write_iter+0xa7/0x1b0 mm/filemap.c:3944
 __kernel_write+0x5b1/0xa60 fs/read_write.c:539
 __dump_emit+0x264/0x3a0 fs/coredump.c:875
 writenote+0x21d/0x3b0 fs/binfmt_elf.c:1465
 write_note_info fs/binfmt_elf.c:1924 [inline]
 elf_core_dump+0x2fac/0x4570 fs/binfmt_elf.c:2272
 do_coredump+0x1852/0x31e0 fs/coredump.c:826
 get_signal+0xc06/0x14e0 kernel/signal.c:2886
 arch_do_signal_or_restart+0xbd/0x12b0 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
 irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:320
 exc_page_fault+0x342/0x700 arch/x86/mm/fault.c:1504
 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:606
RIP: 0033:0x0
Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6.
RSP: 002b:0000000020000008 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fcce0e90f80 RCX: 00007fcce0d718d9
RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000000
RBP: 00007fcce0dcdb20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fcce0e90f80 R15: 00007fffa31c6b18
 </TASK>