------------[ cut here ]------------
kernel BUG at fs/buffer.c:3027!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 360 Comm: kmmpd-loop0 Not tainted 5.4.290-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:submit_bh_wbc+0x897/0x8c0 fs/buffer.c:3027
Code: 4d b8 80 e1 07 80 c1 03 38 c1 0f 8c fe fd ff ff 48 8b 7d b8 e8 6a 6d ea ff e9 f0 fd ff ff e8 10 cd b9 ff 0f 0b e8 09 cd b9 ff <0f> 0b e8 02 cd b9 ff 0f 0b e8 fb cc b9 ff 0f 0b e8 f4 cc b9 ff 0f
RSP: 0018:ffff8881eeaa7be8 EFLAGS: 00010293
RAX: ffffffff81abcdc7 RBX: 0000000000000000 RCX: ffff8881d995af40
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8881eeaa7c88 R08: ffffffff81abc5d3 R09: ffffed103ba5562b
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000001 R14: ffff8881dd2ab150 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005607709c02b8 CR3: 00000001ef0e9000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 submit_bh+0x28/0x40 fs/buffer.c:3076
 write_mmp_block+0x3ff/0x5b0 fs/ext4/mmp.c:55
 kmmpd+0x7de/0xa10 fs/ext4/mmp.c:246
 kthread+0x321/0x3a0 kernel/kthread.c:288
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:354
Modules linked in:
---[ end trace fd4edd97a1c2d70f ]---
RIP: 0010:submit_bh_wbc+0x897/0x8c0 fs/buffer.c:3027
Code: 4d b8 80 e1 07 80 c1 03 38 c1 0f 8c fe fd ff ff 48 8b 7d b8 e8 6a 6d ea ff e9 f0 fd ff ff e8 10 cd b9 ff 0f 0b e8 09 cd b9 ff <0f> 0b e8 02 cd b9 ff 0f 0b e8 fb cc b9 ff 0f 0b e8 f4 cc b9 ff 0f
RSP: 0018:ffff8881eeaa7be8 EFLAGS: 00010293
RAX: ffffffff81abcdc7 RBX: 0000000000000000 RCX: ffff8881d995af40
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8881eeaa7c88 R08: ffffffff81abc5d3 R09: ffffed103ba5562b
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000001 R14: ffff8881dd2ab150 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005607709c02b8 CR3: 00000001ef0e9000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400