should_failslab+0xdb/0x130 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 kmem_cache_alloc_trace+0x2e9/0x790 mm/slab.c:3616
gfs2: can't parse mount arguments
 kmalloc include/linux/slab.h:488 [inline]
 __kthread_create_on_node+0xe3/0x3e0 kernel/kthread.c:277
------------[ cut here ]------------
WARNING: CPU: 0 PID: 24975 at fs/super.c:1163 kill_block_super+0xc9/0xf0 fs/super.c:1163
Kernel panic - not syncing: panic_on_warn set ...

 kthread_create_on_node+0xa8/0xd0 kernel/kthread.c:365
 loop_prepare_queue drivers/block/loop.c:877 [inline]
 loop_set_fd drivers/block/loop.c:922 [inline]
 lo_ioctl+0xce3/0x1cd0 drivers/block/loop.c:1417
 __blkdev_driver_ioctl block/ioctl.c:297 [inline]
 blkdev_ioctl+0x95f/0x1850 block/ioctl.c:594
 block_ioctl+0xde/0x120 fs/block_dev.c:1881
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0x7ae/0x1060 fs/ioctl.c:684
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45b1b7
RSP: 002b:00007f9b13cb9a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f9b13cba6d4 RCX: 000000000045b1b7
RDX: 0000000000000007 RSI: 0000000000004c00 RDI: 0000000000000008
RBP: 000000000075bf20 R08: 0000000000000000 R09: 000000000000000a
R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000000006
R13: 0000000000000ba0 R14: 00000000004cc734 R15: 000000000000000a
CPU: 0 PID: 24975 Comm: syz-executor.5 Not tainted 4.14.169-syzkaller #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+0x142/0x197 lib/dump_stack.c:58
 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:ffff888061627a48 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc90005e28000
RDX: 0000000000040000 RSI: ffffffff818fe019 RDI: ffff8880a6d6da20
RBP: ffff888061627a60 R08: ffff8880a8450680 R09: 0000000000000001
R10: 0000000000000000 R11: ffff8880a8450680 R12: ffff88805f4dc180
R13: ffff8880a6d6d680 R14: ffff88805f4dc180 R15: dffffc0000000000
 gfs2_kill_sb+0x14e/0x1a0 fs/gfs2/ops_fstype.c:1384
 deactivate_locked_super+0x74/0xe0 fs/super.c:319
 sget_userns+0x9d9/0xc30 fs/super.c:537
 sget+0xd6/0x120 fs/super.c:572
 gfs2_mount+0x13e/0x556 fs/gfs2/ops_fstype.c:1278
 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: 0033:0x45dd9a
RSP: 002b:00007fe44c11ea68 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fe44c11f6d4 RCX: 000000000045dd9a
RDX: 00007fe44c11eae0 RSI: 0000000020000100 RDI: 00007fe44c11eb00
RBP: 000000000075bf20 R08: 00007fe44c11eb40 R09: 00007fe44c11eae0
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
R13: 0000000000000ba0 R14: 00000000004cc734 R15: 000000000000003b
Kernel Offset: disabled
Rebooting in 86400 seconds..