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: 8587 Comm: kworker/u4:1 Not tainted 5.15.94-syzkaller-03204-g5448b2fda85f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
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 fe 4a 0f 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 dd 4a 0f fd 4c 8b 2b 4d 8d b5 40
RSP: 0018:ffffc900000a7ba0 EFLAGS: 00010206
RAX: 0000000000000003 RBX: 0000000000000018 RCX: ffff888181e30000
RDX: 0000000000000000 RSI: ffffffff85082200 RDI: ffff888122620e00
RBP: ffffc900000a7bd8 R08: ffffffff827ee1a2 R09: 0000000000000003
R10: fffff52000014f6c R11: dffffc0000000001 R12: ffff888122620e00
R13: ffff88812258bc18 R14: ffff88812258bc1c R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001000 CR3: 00000001277e2000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
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:169 [inline]
cleanup_net+0x64b/0xc00 net/core/net_namespace.c:596
process_one_work+0x6bb/0xc10 kernel/workqueue.c:2313
worker_thread+0xad5/0x12a0 kernel/workqueue.c:2460
kthread+0x421/0x510 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 <unknown>:298
</TASK>
Modules linked in:
---[ end trace c2da207297a4e04d ]---
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 fe 4a 0f 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 dd 4a 0f fd 4c 8b 2b 4d 8d b5 40
RSP: 0018:ffffc900000a7ba0 EFLAGS: 00010206
RAX: 0000000000000003 RBX: 0000000000000018 RCX: ffff888181e30000
RDX: 0000000000000000 RSI: ffffffff85082200 RDI: ffff888122620e00
RBP: ffffc900000a7bd8 R08: ffffffff827ee1a2 R09: 0000000000000003
R10: fffff52000014f6c R11: dffffc0000000001 R12: ffff888122620e00
R13: ffff88812258bc18 R14: ffff88812258bc1c R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020404030 CR3: 00000001277e2000 CR4: 00000000003506b0
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 callq 0x4589480b
8: c8 42 80 3c enterq $0x8042,$0x3c
c: 38 00 cmp %al,(%rax)
e: 74 08 je 0x18
10: 48 89 df mov %rbx,%rdi
13: e8 fe 4a 0f fd callq 0xfd0f4b16
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 dd 4a 0f fd callq 0xfd0f4b16
39: 4c 8b 2b mov (%rbx),%r13
3c: 4d rex.WRB
3d: 8d .byte 0x8d
3e: b5 40 mov $0x40,%ch