RBP: 00007f65809c91d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd824f399f R14: 00007f65809c9300 R15: 0000000000022000
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 28784 Comm: syz-executor.2 Not tainted 4.14.218-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88802e462300 task.stack: ffff888054e80000
RIP: 0010:__list_del_entry_valid+0x81/0xf0 syzkaller/managers/linux-4-14/kernel/lib/list_debug.c:51
RSP: 0018:ffff888054e87b48 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 00000000fffffff4 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8880964d8ba0
RBP: ffff8880964d8b98 R08: 0000000000000000 R09: 0000000000040057
R10: ffff88802e462bb0 R11: ffff88802e462300 R12: 0000000000000000
R13: 0000000000000000 R14: ffff8880964d8ba0 R15: dffffc0000000000
FS:  00007f65809c9700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020a00000 CR3: 00000000599da000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __list_del_entry syzkaller/managers/linux-4-14/kernel/./include/linux/list.h:117 [inline]
 list_del syzkaller/managers/linux-4-14/kernel/./include/linux/list.h:125 [inline]
 kernfs_kill_sb+0x5b/0x1b0 syzkaller/managers/linux-4-14/kernel/fs/kernfs/mount.c:365
 sysfs_kill_sb+0x1e/0x30 syzkaller/managers/linux-4-14/kernel/fs/sysfs/mount.c:53
 deactivate_locked_super+0x6c/0xd0 syzkaller/managers/linux-4-14/kernel/fs/super.c:319
 sget_userns+0x9c4/0xc10 syzkaller/managers/linux-4-14/kernel/fs/super.c:537
 kernfs_mount_ns+0xd5/0x7c0 syzkaller/managers/linux-4-14/kernel/fs/kernfs/mount.c:324
 sysfs_mount+0xa1/0x160 syzkaller/managers/linux-4-14/kernel/fs/sysfs/mount.c:39
 mount_fs+0x92/0x2a0 syzkaller/managers/linux-4-14/kernel/fs/super.c:1237
 vfs_kern_mount.part.0+0x5b/0x470 syzkaller/managers/linux-4-14/kernel/fs/namespace.c:1046
 vfs_kern_mount syzkaller/managers/linux-4-14/kernel/fs/namespace.c:1036 [inline]
 do_new_mount syzkaller/managers/linux-4-14/kernel/fs/namespace.c:2549 [inline]
 do_mount+0xe53/0x2a00 syzkaller/managers/linux-4-14/kernel/fs/namespace.c:2879
 SYSC_mount syzkaller/managers/linux-4-14/kernel/fs/namespace.c:3095 [inline]
 SyS_mount+0xa8/0x120 syzkaller/managers/linux-4-14/kernel/fs/namespace.c:3072
 do_syscall_64+0x1d5/0x640 syzkaller/managers/linux-4-14/kernel/arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x465b09
RSP: 002b:00007f65809c9188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 000000000056c0b0 RCX: 0000000000465b09
RDX: 0000000020000500 RSI: 0000000020000480 RDI: 0000000000000000
RBP: 00007f65809c91d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd824f399f R14: 00007f65809c9300 R15: 0000000000022000
Code: c5 0f 84 db 35 ef 03 48 b8 00 02 00 00 00 00 ad de 49 39 c4 0f 84 dc 35 ef 03 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 51 49 8b 14 24 48 39 ea 0f 85 93 35 ef 03 49 8d 
RIP: __list_del_entry_valid+0x81/0xf0 syzkaller/managers/linux-4-14/kernel/lib/list_debug.c:51 RSP: ffff888054e87b48
---[ end trace 8c3492039b64b05f ]---