------------[ cut here ]------------
kernel BUG at fs/buffer.c:3027!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 364 Comm: syz-executor129 Not tainted 5.4.290-syzkaller-00001-g986c38813dff #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:ffff8881ee75f6a8 EFLAGS: 00010293
RAX: ffffffff81abcdc7 RBX: 0000000000000000 RCX: ffff8881f0d16e40
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8881ee75f748 R08: ffffffff81abc5d3 R09: ffffed103b95ee16
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000000 R14: ffff8881dcaf70a8 R15: dffffc0000000000
FS:  0000555575b7a380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4abfbe7468 CR3: 00000001ef079000 CR4: 00000000003406a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 submit_bh+0x28/0x40 fs/buffer.c:3076
 read_mmp_block+0x1a2/0x8a0 fs/ext4/mmp.c:91
 ext4_multi_mount_protect+0x5e1/0xa50 fs/ext4/mmp.c:358
 ext4_fill_super+0x5cf7/0x8d90 fs/ext4/super.c:4434
 mount_bdev+0x273/0x380 fs/super.c:1428
 ext4_mount+0x34/0x40 fs/ext4/super.c:6279
 legacy_get_tree+0xee/0x190 fs/fs_context.c:648
 vfs_get_tree+0x88/0x290 fs/super.c:1558
 do_new_mount+0x292/0x570 fs/namespace.c:2850
 do_mount+0x688/0xe10 fs/namespace.c:3170
 ksys_mount+0xcc/0x100 fs/namespace.c:3379
 __do_sys_mount fs/namespace.c:3393 [inline]
 __se_sys_mount fs/namespace.c:3390 [inline]
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3390
 do_syscall_64+0xd8/0x170 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7f4abfba059a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd7c838b08 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffd7c838b60 RCX: 00007f4abfba059a
RDX: 0000200000000100 RSI: 0000200000000200 RDI: 00007ffd7c838b60
RBP: 0000200000000200 R08: 00007ffd7c838ba0 R09: 000000000000050d
R10: 0000000003000800 R11: 0000000000000206 R12: 0000200000000100
R13: 00007ffd7c838ba0 R14: 0000000000000513 R15: 00002000000006c0
Modules linked in:
---[ end trace 7be708b168a7fab0 ]---
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:ffff8881ee75f6a8 EFLAGS: 00010293
RAX: ffffffff81abcdc7 RBX: 0000000000000000 RCX: ffff8881f0d16e40
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8881ee75f748 R08: ffffffff81abc5d3 R09: ffffed103b95ee16
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000000 R14: ffff8881dcaf70a8 R15: dffffc0000000000
FS:  0000555575b7a380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4abfbe7468 CR3: 00000001ef079000 CR4: 00000000003406a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400