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: 0 PID: 9438 Comm: syz-executor1 Not tainted 4.15.0-rc5+ #237
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__list_del_entry_valid+0x7e/0x150 lib/list_debug.c:51
RSP: 0018:ffff8801c4a76b10 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8801c1113460 RDI: ffff8801c1113468
RBP: ffff8801c4a76b28 R08: 1ffff1003894eca5 R09: 0000000000000004
R10: ffff8801c4a769f0 R11: 0000000000000002 R12: 0000000000000000
R13: ffff8801c4a76cc8 R14: ffff8801c1113460 R15: ffff8801d54616c0
FS:  00007f2f25486700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000920008 CR3: 0000000005e22003 CR4: 00000000001606f0
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:851
 tipc_subscrb_subscrp_delete+0x1e9/0x460 net/tipc/subscr.c:208
 tipc_subscrb_delete net/tipc/subscr.c:238 [inline]
 tipc_subscrb_release_cb+0x17/0x30 net/tipc/subscr.c:316
 tipc_close_conn+0x171/0x270 net/tipc/server.c:204
 tipc_topsrv_kern_unsubscr+0x213/0x340 net/tipc/server.c:532
 tipc_group_delete+0x2c0/0x3d0 net/tipc/group.c:205
 tipc_sk_leave+0x10b/0x200 net/tipc/socket.c:2780
 tipc_release+0x154/0xfe0 net/tipc/socket.c:575
 sock_release+0x8d/0x1e0 net/socket.c:600
 sock_close+0x16/0x20 net/socket.c:1129
 __fput+0x327/0x7e0 fs/file_table.c:210
 ____fput+0x15/0x20 fs/file_table.c:244
 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+0x73f/0x16c0 kernel/signal.c:2335
 do_signal+0x94/0x1ee0 arch/x86/kernel/signal.c:809
 exit_to_usermode_loop+0x214/0x310 arch/x86/entry/common.c:158
 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline]
 syscall_return_slowpath+0x490/0x550 arch/x86/entry/common.c:264
 entry_SYSCALL_64_fastpath+0x94/0x96
RIP: 0033:0x452ac9
RSP: 002b:00007f2f25485c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000036
RAX: 0000000000000000 RBX: 000000000071bea0 RCX: 0000000000452ac9
RDX: 0000000000000087 RSI: 000000000000010f RDI: 0000000000000014
RBP: 0000000000000539 R08: 0000000000000010 R09: 0000000000000000
R10: 0000000020265000 R11: 0000000000000212 R12: 00000000006f4df8
R13: 0000000000000015 R14: 00007f2f254866d4 R15: ffffffffffffffff
Code: 00 00 00 00 ad de 49 39 c4 74 66 48 b8 00 02 00 00 00 00 ad de 48 89 da 48 39 c3 74 65 48 c1 ea 03 48 b8 00 00 00 00 00 fc ff df <80> 3c 02 00 75 7b 48 8b 13 48 39 f2 75 57 49 8d 7c 24 08 48 b8 
RIP: __list_del_entry_valid+0x7e/0x150 lib/list_debug.c:51 RSP: ffff8801c4a76b10
---[ end trace 9051df9600d9789c ]---