RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014
R13: 0000000000000440 R14: 00000000006fa6a0 R15: 0000000000000021
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 7603 Comm: syz-executor4 Not tainted 4.17.0-rc2+ #22
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__list_del_entry_valid+0x84/0xf3 lib/list_debug.c:51
RSP: 0018:ffff880197617860 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff8801ab87ff98 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801ab87ffa0
RBP: ffff880197617878 R08: fffffbfff11cc50d R09: fffffbfff11cc50c
R10: ffff880197617878 R11: ffffffff88e62867 R12: 0000000000000000
R13: 0000000000000000 R14: ffff880197617908 R15: ffff8801ab87ff98
FS:  00007f9dec06a700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004d9fc4 CR3: 00000001c1b9c000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __list_del_entry include/linux/list.h:117 [inline]
 list_del include/linux/list.h:125 [inline]
 kernfs_kill_sb+0xa0/0x350 fs/kernfs/mount.c:361
 sysfs_kill_sb+0x22/0x40 fs/sysfs/mount.c:50
 deactivate_locked_super+0x97/0x100 fs/super.c:316
 kernfs_mount_ns+0x753/0x8e0 fs/kernfs/mount.c:335
 sysfs_mount+0xdf/0x200 fs/sysfs/mount.c:36
 mount_fs+0xae/0x328 fs/super.c:1267
 vfs_kern_mount.part.34+0xd4/0x4d0 fs/namespace.c:1037
 vfs_kern_mount fs/namespace.c:1027 [inline]
 do_new_mount fs/namespace.c:2518 [inline]
 do_mount+0x564/0x3070 fs/namespace.c:2848
 ksys_mount+0x12d/0x140 fs/namespace.c:3064
 __do_sys_mount fs/namespace.c:3078 [inline]
 __se_sys_mount fs/namespace.c:3075 [inline]
 __x64_sys_mount+0xbe/0x150 fs/namespace.c:3075
 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455979
RSP: 002b:00007f9dec069c68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f9dec06a6d4 RCX: 0000000000455979
RDX: 00000000200003c0 RSI: 00000000200001c0 RDI: 00000000200000c0
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014
R13: 0000000000000440 R14: 00000000006fa6a0 R15: 0000000000000021
Code: c5 0f 84 cc 00 00 00 48 b8 00 02 00 00 00 00 ad de 49 39 c4 0f 84 a5 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 5f 49 8b 14 24 48 39 da 0f 85 ba 00 00 00 48 b8 
RIP: __list_del_entry_valid+0x84/0xf3 lib/list_debug.c:51 RSP: ffff880197617860
---[ end trace 1a78c5d7c36d84f2 ]---