RDX: 00000000200004c0 RSI: 0000000020000480 RDI: 0000000020000440
RBP: 00007fffb73b5580 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff
R13: 0000000000000003 R14: 0000000000000000 R15: 0000000000000000
------------[ cut here ]------------
WARNING: CPU: 1 PID: 6933 at fs/super.c:1163 kill_block_super+0xc9/0xf0 fs/super.c:1163
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 6933 Comm: syz-executor545 Not tainted 4.14.151 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x138/0x197 lib/dump_stack.c:53
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x2f/0x2f kernel/panic.c:547
 report_bug+0x216/0x254 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x1bb/0x310 arch/x86/kernel/traps.c:295
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:963
RIP: 0010:kill_block_super+0xc9/0xf0 fs/super.c:1163
RSP: 0018:ffff8880a54bfb98 EFLAGS: 00010297
RAX: ffff88808b4e8380 RBX: 0000000000000000 RCX: 1ffff1101169d17e
RDX: 0000000000000000 RSI: ffff8880a3d16338 RDI: ffff8880a77ca4a0
RBP: ffff8880a54bfbb0 R08: ffff88808b4e8380 R09: 0000000000000001
R10: 0000000000000000 R11: ffff88808b4e8380 R12: ffff8880a530c800
R13: ffff8880a77ca100 R14: ffff8880a530c800 R15: dffffc0000000000
 deactivate_locked_super+0x74/0xe0 fs/super.c:319
 sget_userns+0x9d9/0xc30 fs/super.c:537
 sget+0xd6/0x120 fs/super.c:572
 mount_bdev+0xd5/0x370 fs/super.c:1107
 squashfs_mount+0x35/0x40 fs/squashfs/super.c:404
 mount_fs+0x97/0x2a1 fs/super.c:1237
 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046
 vfs_kern_mount fs/namespace.c:1036 [inline]
 do_new_mount fs/namespace.c:2549 [inline]
 do_mount+0x417/0x27d0 fs/namespace.c:2879
 SYSC_mount fs/namespace.c:3095 [inline]
 SyS_mount+0xab/0x120 fs/namespace.c:3072
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x441149
RSP: 002b:00007fffb73b5568 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441149
RDX: 00000000200004c0 RSI: 0000000020000480 RDI: 0000000020000440
RBP: 00007fffb73b5580 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff
R13: 0000000000000003 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..