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kernel BUG at fs/buffer.c:3106!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 7968 Comm: syz-executor149 Not tainted 4.14.278-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff888095c204c0 task.stack: ffff8880b3600000
RIP: 0010:submit_bh_wbc+0x573/0x6f0 fs/buffer.c:3106
RSP: 0000:ffff8880b3607970 EFLAGS: 00010297
RAX: ffff888095c204c0 RBX: ffff88808e2835e8 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000000000000
RBP: ffff8880b4aba880 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000003000
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880b3607a38
FS:  00007f217fe85700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555c07b65008 CR3: 000000009bcbc000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 read_mmp_block+0x119/0x5b0 fs/ext4/mmp.c:91
 ext4_multi_mount_protect+0x438/0x9c0 fs/ext4/mmp.c:358
 ext4_fill_super+0x8e41/0xb3c0 fs/ext4/super.c:4213
 mount_bdev+0x2b3/0x360 fs/super.c:1134
 mount_fs+0x92/0x2a0 fs/super.c:1237
 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046
 vfs_kern_mount fs/namespace.c:1036 [inline]
 do_new_mount fs/namespace.c:2572 [inline]
 do_mount+0xe65/0x2a10 fs/namespace.c:2902
 SYSC_mount fs/namespace.c:3118 [inline]
 SyS_mount+0xa8/0x120 fs/namespace.c:3095
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f217fedabaa
RSP: 002b:00007f217fe85018 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f217fedabaa
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f217fe85080
RBP: 0000000000000004 R08: 00007f217fe850c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000
R13: 00000000200003c8 R14: 00007f217fe85080 R15: 0000000020000100
Code: 1c c2 ff f0 80 63 01 f7 e9 66 fb ff ff 48 8d 43 10 4c 8d 7b 20 48 89 44 24 08 e9 55 fc ff ff e8 34 1c c2 ff 0f 0b e8 2d 1c c2 ff <0f> 0b e8 26 1c c2 ff 0f 0b e8 1f 1c c2 ff 0f 0b e8 18 1c c2 ff 
RIP: submit_bh_wbc+0x573/0x6f0 fs/buffer.c:3106 RSP: ffff8880b3607970
---[ end trace 14a956aeb989f411 ]---