list_del corruption, 000000004cf705b3->next is LIST_POISON1 (0000000040a7881f)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:47!
invalid opcode: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 8672 Comm: syz-executor6 Not tainted 4.16.0-rc7+ #282
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__list_del_entry_valid+0xd3/0x150 lib/list_debug.c:45
RSP: 0018:ffff8801c9916a98 EFLAGS: 00010282
RAX: 000000000000004e RBX: dead000000000200 RCX: 0000000000000000
RDX: 000000000000004e RSI: 1ffff10039322d08 RDI: ffffed0039322d47
RBP: ffff8801c9916ab0 R08: 1ffff10039322c9f R09: 0000000000000000
R10: ffff8801c9916978 R11: 0000000000000000 R12: dead000000000100
R13: ffff8801c9916c50 R14: ffff8801c8b21c60 R15: ffff8801d8aab180
FS:  0000000000000000(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000002251fd0 CR3: 000000000846a001 CR4: 00000000001606e0
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
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0x9bb/0x1ad0 kernel/exit.c:865
 do_group_exit+0x149/0x400 kernel/exit.c:968
 get_signal+0x73a/0x16d0 kernel/signal.c:2469
 do_signal+0x90/0x1e90 arch/x86/kernel/signal.c:809
 exit_to_usermode_loop+0x258/0x2f0 arch/x86/entry/common.c:162
 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:265 [inline]
 do_syscall_32_irqs_on arch/x86/entry/common.c:336 [inline]
 do_fast_syscall_32+0xbe6/0xf9f arch/x86/entry/common.c:392
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7f3fc99
RSP: 002b:00000000f5f3b0ac EFLAGS: 00000282 ORIG_RAX: 0000000000000172
RAX: fffffffffffffe00 RBX: 0000000000000014 RCX: 0000000020fc0fc8
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Code: 8f 00 00 00 49 8b 54 24 08 48 39 f2 75 3b 48 83 c4 08 b8 01 00 00 00 5b 41 5c 5d c3 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 
RIP: __list_del_entry_valid+0xd3/0x150 lib/list_debug.c:45 RSP: ffff8801c9916a98
---[ end trace 6eaf18d04fc95a60 ]---