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: 17857 Comm: syz-executor3 Not tainted 4.16.0+ #1
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:ffff8801a0d7e8a0 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff8801b634e2d8 RCX: ffffffff815c8a61
RDX: 000000000000003f RSI: 0000000000000004 RDI: ffff8801b634e2e0
RBP: ffff8801a0d7e8b8 R08: ffffed0033e1dbb7 R09: ffffed0033e1dbb6
R10: ffffed0033e1dbb6 R11: ffff88019f0eddb3 R12: 00000000000001f8
R13: 0000000000400040 R14: ffff88019f0edd80 R15: ffff8801b634e2d8
FS:  00007ff911fd9700(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000ca8978 CR3: 00000001a762a000 CR4: 00000000001406e0
DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 __list_del_entry include/linux/list.h:117 [inline]
 list_del_init include/linux/list.h:159 [inline]
 tipc_nametbl_unsubscribe+0x3d3/0xaf0 net/tipc/name_table.c:708
 tipc_sub_unsubscribe+0x6d/0x305 net/tipc/subscr.c:164
 tipc_conn_delete_sub+0x32d/0x530 net/tipc/topsrv.c:245
 tipc_topsrv_kern_unsubscr+0x280/0x3f0 net/tipc/topsrv.c:598
 tipc_group_delete+0x2dd/0x3f0 net/tipc/group.c:231
 tipc_sk_leave+0x10e/0x210 net/tipc/socket.c:2800
 tipc_release+0x146/0x1290 net/tipc/socket.c:576
 sock_release+0x96/0x1b0 net/socket.c:594
 sock_close+0x16/0x20 net/socket.c:1149
 __fput+0x34d/0x890 fs/file_table.c:209
 ____fput+0x15/0x20 fs/file_table.c:243
 task_work_run+0x1e4/0x290 kernel/task_work.c:113
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0x1aee/0x2730 kernel/exit.c:865
 do_group_exit+0x16f/0x430 kernel/exit.c:968
 get_signal+0x886/0x1960 kernel/signal.c:2469
 do_signal+0x90/0x2020 arch/x86/kernel/signal.c:810
 exit_to_usermode_loop+0x28a/0x310 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_64+0x792/0x9d0 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x4552d9
RSP: 002b:00007ff911fd8c88 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 00000000004552d9
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 000000000072becc
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000034
R10: 0000000000000127 R11: 0000000000000246 R12: 0000000000000013
R13: 00000000000005ef R14: 00000000006fbf08 R15: 0000000000000003
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: ffff8801a0d7e8a0
---[ end trace 1d24730d0118269d ]---