------------[ cut here ]------------
kernel BUG at fs/buffer.c:3027!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 859 Comm: kmmpd-loop0 Not tainted 5.4.210-syzkaller-00002-g35e910266d44 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
RIP: 0010:submit_bh_wbc+0x76e/0x790 fs/buffer.c:3027
Code: 08 80 e1 07 80 c1 03 38 c1 0f 8c be fe ff ff 48 8b 7c 24 08 e8 13 99 ee ff e9 af fe ff ff e8 09 27 c2 ff 0f 0b e8 02 27 c2 ff <0f> 0b e8 fb 26 c2 ff 0f 0b e8 f4 26 c2 ff 0f 0b e8 ed 26 c2 ff 0f
RSP: 0018:ffff8881e6ecfd10 EFLAGS: 00010293
RAX: ffffffff819e71de RBX: 0000000000000000 RCX: ffff8881e707af40
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffff1103cbfbafc R08: ffffffff819e6b09 R09: ffffed103cbfbafd
R10: ffffed103cbfbafd R11: 1ffff1103cbfbafc R12: 0000000000000001
R13: ffff8881e5fdd7e0 R14: dffffc0000000000 R15: 0000000000003800
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020011000 CR3: 00000001dd63a000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 submit_bh+0x21/0x30 fs/buffer.c:3076
 write_mmp_block+0x34d/0x4f0 fs/ext4/mmp.c:55
 kmmpd+0x25f/0x9b0 fs/ext4/mmp.c:246
 kthread+0x2d8/0x360 kernel/kthread.c:288
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352
Modules linked in:
---[ end trace 031f8557908d365d ]---
RIP: 0010:submit_bh_wbc+0x76e/0x790 fs/buffer.c:3027
Code: 08 80 e1 07 80 c1 03 38 c1 0f 8c be fe ff ff 48 8b 7c 24 08 e8 13 99 ee ff e9 af fe ff ff e8 09 27 c2 ff 0f 0b e8 02 27 c2 ff <0f> 0b e8 fb 26 c2 ff 0f 0b e8 f4 26 c2 ff 0f 0b e8 ed 26 c2 ff 0f
RSP: 0018:ffff8881e6ecfd10 EFLAGS: 00010293
RAX: ffffffff819e71de RBX: 0000000000000000 RCX: ffff8881e707af40
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffff1103cbfbafc R08: ffffffff819e6b09 R09: ffffed103cbfbafd
R10: ffffed103cbfbafd R11: 1ffff1103cbfbafc R12: 0000000000000001
R13: ffff8881e5fdd7e0 R14: dffffc0000000000 R15: 0000000000003800
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020011000 CR3: 00000001dd63a000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400