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: 7 Comm: kworker/u4:0 Not tainted 5.10.194-syzkaller-00508-ga27512601c2d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Workqueue: netns cleanup_net
RIP: 0010:tipc_conn_close+0x54/0x140 net/tipc/topsrv.c:157
Code: d8 48 c1 e8 03 48 89 45 c8 42 80 3c 38 00 74 08 48 89 df e8 9e b8 0e fd 48 89 5d d0 48 8b 1b 48 83 c3 18 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 7d b8 0e fd 4c 8b 2b 4d 8d b5 38
RSP: 0018:ffffc90000077bc0 EFLAGS: 00010206
RAX: 0000000000000003 RBX: 0000000000000018 RCX: ffff888100250000
RDX: 0000000000000000 RSI: ffffffff8507b060 RDI: ffff888112e44400
RBP: ffffc90000077bf8 R08: ffffffff827012d3 R09: 0000000000000003
R10: fffff5200000ef70 R11: dffffc0000000001 R12: ffff888112e44400
R13: ffff888112e44018 R14: ffff888112e4401c R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c02e00e000 CR3: 0000000117bd0000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 tipc_topsrv_stop net/tipc/topsrv.c:703 [inline]
 tipc_topsrv_exit_net+0x139/0x320 net/tipc/topsrv.c:725
 ops_exit_list net/core/net_namespace.c:182 [inline]
 cleanup_net+0x66c/0xcb0 net/core/net_namespace.c:606
 process_one_work+0x6dc/0xbd0 kernel/workqueue.c:2301
 worker_thread+0xaea/0x1510 kernel/workqueue.c:2447
 kthread+0x34b/0x3d0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:299
Modules linked in:
---[ end trace 7b4bdc04545ccf2e ]---
RIP: 0010:tipc_conn_close+0x54/0x140 net/tipc/topsrv.c:157
Code: d8 48 c1 e8 03 48 89 45 c8 42 80 3c 38 00 74 08 48 89 df e8 9e b8 0e fd 48 89 5d d0 48 8b 1b 48 83 c3 18 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 7d b8 0e fd 4c 8b 2b 4d 8d b5 38
RSP: 0018:ffffc90000077bc0 EFLAGS: 00010206
RAX: 0000000000000003 RBX: 0000000000000018 RCX: ffff888100250000
RDX: 0000000000000000 RSI: ffffffff8507b060 RDI: ffff888112e44400
RBP: ffffc90000077bf8 R08: ffffffff827012d3 R09: 0000000000000003
R10: fffff5200000ef70 R11: dffffc0000000001 R12: ffff888112e44400
R13: ffff888112e44018 R14: ffff888112e4401c R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd3bf9becf8 CR3: 0000000110082000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	d8 48 c1             	fmuls  -0x3f(%rax)
   3:	e8 03 48 89 45       	call   0x4589480b
   8:	c8 42 80 3c          	enter  $0x8042,$0x3c
   c:	38 00                	cmp    %al,(%rax)
   e:	74 08                	je     0x18
  10:	48 89 df             	mov    %rbx,%rdi
  13:	e8 9e b8 0e fd       	call   0xfd0eb8b6
  18:	48 89 5d d0          	mov    %rbx,-0x30(%rbp)
  1c:	48 8b 1b             	mov    (%rbx),%rbx
  1f:	48 83 c3 18          	add    $0x18,%rbx
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 38 00       	cmpb   $0x0,(%rax,%r15,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 df             	mov    %rbx,%rdi
  34:	e8 7d b8 0e fd       	call   0xfd0eb8b6
  39:	4c 8b 2b             	mov    (%rbx),%r13
  3c:	4d                   	rex.WRB
  3d:	8d                   	.byte 0x8d
  3e:	b5 38                	mov    $0x38,%ch