R13: 0000000000000404 R14: 00000000006f9100 R15: 000000000000003b
list_del corruption. prev->next should be ffff8801a839a810, but was ffff880183192c80
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:53!
invalid opcode: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 15198 Comm: syz-executor7 Not tainted 4.17.0-rc1+ #9
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__list_del_entry_valid.cold.1+0x48/0x58 lib/list_debug.c:51
RSP: 0018:ffff880188edf720 EFLAGS: 00010286
RAX: 0000000000000054 RBX: ffff8801a839a810 RCX: 0000000000000000
RDX: 0000000000000054 RSI: ffffffff8160f4e1 RDI: ffffed00311dbeda
RBP: ffff880188edf738 R08: ffff8801d330a540 R09: ffffed003b5e4f90
R10: ffffed003b5e4f90 R11: ffff8801daf27c87 R12: ffff880183192c80
R13: ffff8801b269db10 R14: ffff880188edf810 R15: dffffc0000000000
FS:  00007fa45b9a1700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020600000 CR3: 00000001b3afa000 CR4: 00000000001406e0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 __list_del_entry include/linux/list.h:117 [inline]
 dentry_unlist fs/dcache.c:511 [inline]
 __dentry_kill+0x29e/0x770 fs/dcache.c:564
 dentry_kill+0xc9/0x5a0 fs/dcache.c:686
 dput.part.27+0x648/0x7b0 fs/dcache.c:850
 dput+0x1f/0x30 fs/dcache.c:830
 rpc_gssd_dummy_depopulate net/sunrpc/rpc_pipe.c:1381 [inline]
 rpc_fill_super+0x882/0xbb0 net/sunrpc/rpc_pipe.c:1426
 mount_ns+0x12a/0x1d0 fs/super.c:1082
 rpc_mount+0x9e/0xd0 net/sunrpc/rpc_pipe.c:1451
 mount_fs+0xae/0x328 fs/super.c:1268
 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:2517 [inline]
 do_mount+0x564/0x3070 fs/namespace.c:2847
 ksys_mount+0x12d/0x140 fs/namespace.c:3063
 __do_sys_mount fs/namespace.c:3077 [inline]
 __se_sys_mount fs/namespace.c:3074 [inline]
 __x64_sys_mount+0xbe/0x150 fs/namespace.c:3074
 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455379
RSP: 002b:00007fa45b9a0c68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fa45b9a16d4 RCX: 0000000000455379
RDX: 00000000200002c0 RSI: 0000000020000140 RDI: 0000000020000300
RBP: 000000000072bea0 R08: 0000000020001280 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000015
R13: 0000000000000404 R14: 00000000006f9100 R15: 000000000000003b
Code: 60 0b fa 87 e8 56 64 0c fe 0f 0b 48 89 de 48 c7 c7 80 0c fa 87 e8 45 64 0c fe 0f 0b 48 89 de 48 c7 c7 20 0c fa 87 e8 34 64 0c fe <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 41 
RIP: __list_del_entry_valid.cold.1+0x48/0x58 lib/list_debug.c:51 RSP: ffff880188edf720
---[ end trace 893754f7e5e40b14 ]---