------------[ cut here ]------------
kernel BUG at fs/buffer.c:2714!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 15185 Comm: kmmpd-loop0 Tainted: G        W          6.1.75-syzkaller-00007-g338203a81721 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:submit_bh_wbc+0x4cd/0x4f0 fs/buffer.c:2714
Code: c3 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c bd fe ff ff 48 89 df e8 b4 25 e7 ff e9 b0 fe ff ff e8 fa 44 a0 ff 0f 0b e8 f3 44 a0 ff <0f> 0b e8 ec 44 a0 ff 0f 0b e8 e5 44 a0 ff 0f 0b e8 de 44 a0 ff 0f
RSP: 0018:ffffc90000ae7c20 EFLAGS: 00010293
RAX: ffffffff81d5192d RBX: 0000000000000000 RCX: ffff888118b1e540
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000ae7c70 R08: ffffffff81d51500 R09: ffffed1027a315cf
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 1ffff11027a315ce R14: ffff88813d18ae70 R15: 0000000000003801
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d92d000 CR3: 000000013b174000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000c40a DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 submit_bh+0x1d/0x30 fs/buffer.c:2755
 write_mmp_block_thawed+0x3a0/0x570 fs/ext4/mmp.c:51
 write_mmp_block+0x12b/0x2a0 fs/ext4/mmp.c:67
 kmmpd+0x40c/0xa10 fs/ext4/mmp.c:178
 kthread+0x26d/0x300 kernel/kthread.c:386
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:submit_bh_wbc+0x4cd/0x4f0 fs/buffer.c:2714
Code: c3 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c bd fe ff ff 48 89 df e8 b4 25 e7 ff e9 b0 fe ff ff e8 fa 44 a0 ff 0f 0b e8 f3 44 a0 ff <0f> 0b e8 ec 44 a0 ff 0f 0b e8 e5 44 a0 ff 0f 0b e8 de 44 a0 ff 0f
RSP: 0018:ffffc90000ae7c20 EFLAGS: 00010293
RAX: ffffffff81d5192d RBX: 0000000000000000 RCX: ffff888118b1e540
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000ae7c70 R08: ffffffff81d51500 R09: ffffed1027a315cf
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 1ffff11027a315ce R14: ffff88813d18ae70 R15: 0000000000003801
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbc223025a1 CR3: 000000012e453000 CR4: 00000000003526b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000c40a DR6: 00000000ffff0ff0 DR7: 0000000000000400