kstrdup+0x3a/0x70 mm/util.c:56
 kstrdup_const+0x48/0x60 mm/util.c:77
 alloc_vfsmnt+0xe5/0x7d0 fs/namespace.c:214
------------[ cut here ]------------
 vfs_kern_mount.part.0+0x2a/0x3d0 fs/namespace.c:1039
WARNING: CPU: 1 PID: 11182 at fs/super.c:1163 kill_block_super+0xc9/0xf0 fs/super.c:1163
 vfs_kern_mount fs/namespace.c:1036 [inline]
 do_new_mount fs/namespace.c:2549 [inline]
 do_mount+0x417/0x27d0 fs/namespace.c:2879
Kernel panic - not syncing: panic_on_warn set ...

 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: 0033:0x45c21a
RSP: 002b:00007fcdab3cba88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fcdab3cbb40 RCX: 000000000045c21a
RDX: 00007fcdab3cbae0 RSI: 0000000020000840 RDI: 00007fcdab3cbb00
RBP: 0000000000000000 R08: 00007fcdab3cbb40 R09: 00007fcdab3cbae0
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000004
R13: 00000000004c8772 R14: 00000000004df368 R15: 0000000000000003
CPU: 1 PID: 11182 Comm: syz-executor.3 Not tainted 4.14.132 #26
kobject: 'loop1' (ffff8880a4983620): kobject_uevent_env
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+0x138/0x19c lib/dump_stack.c:53
 panic+0x1f2/0x426 kernel/panic.c:182
kobject: 'loop1' (ffff8880a4983620): fill_kobj_path: path = '/devices/virtual/block/loop1'
 __warn.cold+0x2f/0x36 kernel/panic.c:546
kobject: 'loop5' (ffff8880a4aa4f60): kobject_uevent_env
 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
kobject: 'loop5' (ffff8880a4aa4f60): fill_kobj_path: path = '/devices/virtual/block/loop5'
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:960
RIP: 0010:kill_block_super+0xc9/0xf0 fs/super.c:1163
RSP: 0018:ffff88805dc17a48 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc9000605e000
RDX: 0000000000040000 RSI: ffffffff818d9da9 RDI: ffff8880a77ce560
RBP: ffff88805dc17a60 R08: ffff88805e0c6380 R09: 0000000000000001
R10: 0000000000000000 R11: ffff88805e0c6380 R12: ffff88805dd36d40
R13: ffff8880a77ce1c0 R14: ffff88805dd36d40 R15: dffffc0000000000
kobject: 'loop5' (ffff8880a4aa4f60): kobject_uevent_env
kobject: 'loop5' (ffff8880a4aa4f60): fill_kobj_path: path = '/devices/virtual/block/loop5'
 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
kobject: 'loop0' (ffff88808e5a15a0): kobject_uevent_env
 sget+0xd6/0x120 fs/super.c:572
 gfs2_mount+0x13e/0x556 fs/gfs2/ops_fstype.c:1278
kobject: 'loop0' (ffff88808e5a15a0): fill_kobj_path: path = '/devices/virtual/block/loop0'
 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: 0033:0x45c21a
RSP: 002b:00007f97dd667a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f97dd667b40 RCX: 000000000045c21a
RDX: 00007f97dd667ae0 RSI: 0000000020000840 RDI: 00007f97dd667b00
RBP: 0000000000000000 R08: 00007f97dd667b40 R09: 00007f97dd667ae0
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000004
R13: 00000000004c8772 R14: 00000000004df368 R15: 0000000000000003
Kernel Offset: disabled
Rebooting in 86400 seconds..