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kernel BUG at fs/buffer.c:2666!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 8567 Comm: kmmpd-loop0 Not tainted 6.1.128-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : submit_bh_wbc+0x3f4/0x468 fs/buffer.c:2666
lr : submit_bh_wbc+0x3f4/0x468 fs/buffer.c:2666
sp : ffff800021a67b10
x29: ffff800021a67b20 x28: 1fffe0001edc4472 x27: dfff800000000000
x26: 1ffff0000434cf74 x25: 0000000000000000 x24: 1fffe0001e88c43a
x23: 1fffe0001edc44cf x22: ffff0000f6e24000 x21: 0000000000003801
x20: ffff0000f44621d0 x19: 0000000000000005 x18: 0000000000000140
x17: ffff80019e2fc000 x16: ffff8000082ffa9c x15: 0000000000010000
x14: 1ffff00002b520b2 x13: dfff800000000000 x12: 0000000000000001
x11: 0000000000ff0100 x10: 0000000000000000 x9 : ffff800008b3a6a0
x8 : ffff0000d4ba8000 x7 : ffff800008eaebe8 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff800008eae6b0
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 submit_bh_wbc+0x3f4/0x468 fs/buffer.c:2666
 submit_bh+0x2c/0x3c fs/buffer.c:2707
 write_mmp_block_thawed+0x340/0x52c fs/ext4/mmp.c:51
 write_mmp_block+0x23c/0x734 fs/ext4/mmp.c:67
 kmmpd+0x330/0x9f8 fs/ext4/mmp.c:178
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864
Code: 17ffffad 97e6e282 d4210000 97e6e280 (d4210000) 
---[ end trace 0000000000000000 ]---