list_del corruption. prev->next should be 00000000c51526a6, but was 0000000004bc8a89
------------[ 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: 3011 Comm: syz-executor0 Not tainted 4.16.0-rc7+ #372
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__list_del_entry_valid+0xef/0x150 lib/list_debug.c:51
RSP: 0018:ffff8801bd607378 EFLAGS: 00010286
RAX: 0000000000000054 RBX: ffffffff87be6500 RCX: 0000000000000000
RDX: 0000000000000054 RSI: ffffc90001ec8000 RDI: ffffed0037ac0e63
RBP: ffff8801bd607390 R08: 1ffff10037ac0dbb R09: 0000000000000000
R10: ffff8801bd607258 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8801bd607530 R14: ffff8801ae43a560 R15: ffff8801bc50d600
FS:  00007f688e5b6700(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b9bc25000 CR3: 00000001ba4c2003 CR4: 00000000001626e0
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_init include/linux/list.h:159 [inline]
 tipc_nametbl_unsubscribe+0x318/0x990 net/tipc/name_table.c:848
 tipc_subscrb_subscrp_delete+0x1e9/0x460 net/tipc/subscr.c:212
 tipc_subscrb_delete net/tipc/subscr.c:242 [inline]
 tipc_subscrb_release_cb+0x17/0x30 net/tipc/subscr.c:321
 tipc_topsrv_kern_unsubscr+0x2c3/0x430 net/tipc/server.c:535
 tipc_group_delete+0x2c0/0x3d0 net/tipc/group.c:231
 tipc_sk_leave+0x10b/0x200 net/tipc/socket.c:2795
 tipc_release+0x154/0xff0 net/tipc/socket.c:577
 sock_release+0x8d/0x1e0 net/socket.c:595
 sock_close+0x16/0x20 net/socket.c:1149
 __fput+0x327/0x7e0 fs/file_table.c:209
 ____fput+0x15/0x20 fs/file_table.c:243
 task_work_run+0x199/0x270 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 exit_to_usermode_loop+0x275/0x2f0 arch/x86/entry/common.c:166
 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:265 [inline]
 do_syscall_64+0x6ec/0x940 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x454e79
RSP: 002b:00007f688e5b5c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 00007f688e5b66d4 RCX: 0000000000454e79
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000017
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000052 R14: 00000000006f2850 R15: 0000000000000000
Code: 4c 89 e2 48 c7 c7 40 b9 75 87 e8 55 12 48 fe 0f 0b 48 c7 c7 a0 b9 75 87 e8 47 12 48 fe 0f 0b 48 c7 c7 00 ba 75 87 e8 39 12 48 fe <0f> 0b 48 c7 c7 60 ba 75 87 e8 2b 12 48 fe 0f 0b 48 89 df 48 89 
RIP: __list_del_entry_valid+0xef/0x150 lib/list_debug.c:51 RSP: ffff8801bd607378
---[ end trace 1b73da3578c5df35 ]---