general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]
CPU: 1 PID: 13082 Comm: kworker/u4:12 Not tainted 5.15.0-rc7-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+0x48/0x1c0 net/tipc/topsrv.c:157
Code: fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 63 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5d 08 48 8d 7b 18 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 4d 01 00 00 4c 8b 6b 18 4d 8d a5 b0 03 00 00 4c
RSP: 0018:ffffc9000320fbb8 EFLAGS: 00010216
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000003 RSI: ffffffff88ae9f44 RDI: 0000000000000018
RBP: ffff8880889bb000 R08: 0000000000000001 R09: ffffffff8fcff9ef
R10: 0000000000000001 R11: 0000000000000000 R12: ffff88807abb9858
R13: ffffed100f577313 R14: ffff8880889bb008 R15: ffff8880889bb000
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f382226638b CR3: 000000007eb67000 CR4: 0000000000350ee0
Call Trace:
 tipc_topsrv_stop net/tipc/topsrv.c:694 [inline]
 tipc_topsrv_exit_net+0x227/0x5d0 net/tipc/topsrv.c:715
 ops_exit_list+0xb0/0x160 net/core/net_namespace.c:168
 cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:591
 process_one_work+0x9bf/0x16b0 kernel/workqueue.c:2297
 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444
 kthread+0x3e5/0x4d0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Modules linked in:
---[ end trace aa2c433a8de4cf23 ]---
RIP: 0010:tipc_conn_close+0x48/0x1c0 net/tipc/topsrv.c:157
Code: fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 63 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5d 08 48 8d 7b 18 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 4d 01 00 00 4c 8b 6b 18 4d 8d a5 b0 03 00 00 4c
RSP: 0018:ffffc9000320fbb8 EFLAGS: 00010216
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000003 RSI: ffffffff88ae9f44 RDI: 0000000000000018
RBP: ffff8880889bb000 R08: 0000000000000001 R09: ffffffff8fcff9ef
R10: 0000000000000001 R11: 0000000000000000 R12: ffff88807abb9858
R13: ffffed100f577313 R14: ffff8880889bb008 R15: ffff8880889bb000
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffdfde7fbc0 CR3: 000000001ecaf000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess), 3 bytes skipped:
   0:	48 c1 ea 03          	shr    $0x3,%rdx
   4:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   8:	0f 85 63 01 00 00    	jne    0x171
   e:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  15:	fc ff df
  18:	48 8b 5d 08          	mov    0x8(%rbp),%rbx
  1c:	48 8d 7b 18          	lea    0x18(%rbx),%rdi
  20:	48 89 fa             	mov    %rdi,%rdx
  23:	48 c1 ea 03          	shr    $0x3,%rdx
* 27:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2b:	0f 85 4d 01 00 00    	jne    0x17e
  31:	4c 8b 6b 18          	mov    0x18(%rbx),%r13
  35:	4d 8d a5 b0 03 00 00 	lea    0x3b0(%r13),%r12
  3c:	4c                   	rex.WR