kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 15667 Comm: kworker/u4:6 Not tainted 4.19.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:tipc_conn_close+0x48/0x140 net/tipc/topsrv.c:165
Code: fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 eb 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5d 08 48 8d 7b 20 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 be 00 00 00 4c 8b 6b 20 4d 8d a5 60 03 00 00 4c
RSP: 0018:ffff888226167bb0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff11003149d4f
RDX: 0000000000000004 RSI: ffffffff87b9c774 RDI: 0000000000000020
RBP: ffff888025f1f280 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880aaf48a50
R13: ffffed10155e9151 R14: ffff888025f1f288 R15: ffff888025f1f280
FS:  0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f069d672210 CR3: 000000009e63f000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 tipc_topsrv_stop net/tipc/topsrv.c:701 [inline]
 tipc_topsrv_exit_net+0x27b/0x5c0 net/tipc/topsrv.c:722
 ops_exit_list+0xa5/0x150 net/core/net_namespace.c:153
 cleanup_net+0x3b4/0x8b0 net/core/net_namespace.c:553
 process_one_work+0x864/0x1570 kernel/workqueue.c:2152
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2295
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Modules linked in:
---[ end trace 407c8dd3fc5c2eb5 ]---
RIP: 0010:tipc_conn_close+0x48/0x140 net/tipc/topsrv.c:165
Code: fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 eb 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5d 08 48 8d 7b 20 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 be 00 00 00 4c 8b 6b 20 4d 8d a5 60 03 00 00 4c
RSP: 0018:ffff888226167bb0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff11003149d4f
RDX: 0000000000000004 RSI: ffffffff87b9c774 RDI: 0000000000000020
RBP: ffff888025f1f280 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880aaf48a50
R13: ffffed10155e9151 R14: ffff888025f1f288 R15: ffff888025f1f280
FS:  0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000546f98 CR3: 00000000b2ccc000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400