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: 32755 Comm: kworker/u4:0 Tainted: G W 5.10.159-syzkaller-01303-g32e45c58a05f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: netns cleanup_net
RIP: 0010:tipc_conn_close+0x4d/0x130 net/tipc/topsrv.c:157
Code: 24 08 49 89 de 49 c1 ee 03 43 80 3c 3e 00 74 08 48 89 df e8 c5 1c 25 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 a4 1c 25 fd 48 8b 1b 4c 8d bb 38
RSP: 0018:ffffc90000eafba8 EFLAGS: 00010206
RAX: 0000000000000003 RBX: 0000000000000018 RCX: ffff88812dc48000
RDX: 0000000000000000 RSI: ffffffff84e8d640 RDI: ffff88812c308400
RBP: ffffc90000eafbd8 R08: ffffffff826cfb6e R09: 0000000000000003
R10: fffff520001d5f6d R11: 1ffff920001d5f6c R12: ffff88812c308400
R13: ffff8881454d2d18 R14: 1ffff11025861081 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbdc797c058 CR3: 000000012d903000 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+0x149/0x340 net/tipc/topsrv.c:725
ops_exit_list net/core/net_namespace.c:194 [inline]
cleanup_net+0x6e4/0xd70 net/core/net_namespace.c:615
process_one_work+0x726/0xc10 kernel/workqueue.c:2296
worker_thread+0xb27/0x1550 kernel/workqueue.c:2442
kthread+0x349/0x3d0 kernel/kthread.c:313
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:299
Modules linked in:
---[ end trace 132ff5916ec4563b ]---
RIP: 0010:tipc_conn_close+0x4d/0x130 net/tipc/topsrv.c:157
Code: 24 08 49 89 de 49 c1 ee 03 43 80 3c 3e 00 74 08 48 89 df e8 c5 1c 25 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 a4 1c 25 fd 48 8b 1b 4c 8d bb 38
RSP: 0018:ffffc90000eafba8 EFLAGS: 00010206
RAX: 0000000000000003 RBX: 0000000000000018 RCX: ffff88812dc48000
RDX: 0000000000000000 RSI: ffffffff84e8d640 RDI: ffff88812c308400
RBP: ffffc90000eafbd8 R08: ffffffff826cfb6e R09: 0000000000000003
R10: fffff520001d5f6d R11: 1ffff920001d5f6c R12: ffff88812c308400
R13: ffff8881454d2d18 R14: 1ffff11025861081 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcbc9bccb27 CR3: 00000001446c5000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 24 08 and $0x8,%al
2: 49 89 de mov %rbx,%r14
5: 49 c1 ee 03 shr $0x3,%r14
9: 43 80 3c 3e 00 cmpb $0x0,(%r14,%r15,1)
e: 74 08 je 0x18
10: 48 89 df mov %rbx,%rdi
13: e8 c5 1c 25 fd callq 0xfd251cdd
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 a4 1c 25 fd callq 0xfd251cdd
39: 48 8b 1b mov (%rbx),%rbx
3c: 4c rex.WR
3d: 8d .byte 0x8d
3e: bb .byte 0xbb
3f: 38 .byte 0x38