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: 464 Comm: kworker/u4:4 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: netns cleanup_net
RIP: 0010:tipc_conn_close+0x4c/0x130 net/tipc/topsrv.c:157
Code: 7b 08 4d 89 fe 49 c1 ee 03 43 80 3c 26 00 74 08 4c 89 ff e8 16 6a 17 fd 4c 89 7d d0 4d 8b 3f 49 83 c7 18 4c 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 ff e8 f5 69 17 fd 4d 8b 27 4d 8d bc 24
RSP: 0018:ffffc90000ce7bc0 EFLAGS: 00010206
RAX: 0000000000000003 RBX: ffff88810d0b5e00 RCX: ffff8881170313c0
RDX: 0000000000000000 RSI: ffffffff850827a0 RDI: ffff88810d0b5e00
RBP: ffffc90000ce7bf0 R08: dffffc0000000000 R09: ffffed1021a16bc1
R10: ffffed1021a16bc1 R11: 1ffff11021a16bc0 R12: dffffc0000000000
R13: 1ffff11022d22a83 R14: 1ffff11021a16bc1 R15: 0000000000000018
FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe3cc1d1fc6 CR3: 0000000131a06000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
tipc_topsrv_stop net/tipc/topsrv.c:704 [inline]
tipc_topsrv_exit_net+0x182/0x390 net/tipc/topsrv.c:727
ops_exit_list net/core/net_namespace.c:172 [inline]
cleanup_net+0x58b/0xad0 net/core/net_namespace.c:599
process_one_work+0x6be/0xba0 kernel/workqueue.c:2325
worker_thread+0xa59/0x1200 kernel/workqueue.c:2472
kthread+0x411/0x500 kernel/kthread.c:337
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
</TASK>
Modules linked in:
---[ end trace f1499df35a3082e6 ]---
RIP: 0010:tipc_conn_close+0x4c/0x130 net/tipc/topsrv.c:157
Code: 7b 08 4d 89 fe 49 c1 ee 03 43 80 3c 26 00 74 08 4c 89 ff e8 16 6a 17 fd 4c 89 7d d0 4d 8b 3f 49 83 c7 18 4c 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 ff e8 f5 69 17 fd 4d 8b 27 4d 8d bc 24
RSP: 0018:ffffc90000ce7bc0 EFLAGS: 00010206
RAX: 0000000000000003 RBX: ffff88810d0b5e00 RCX: ffff8881170313c0
RDX: 0000000000000000 RSI: ffffffff850827a0 RDI: ffff88810d0b5e00
RBP: ffffc90000ce7bf0 R08: dffffc0000000000 R09: ffffed1021a16bc1
R10: ffffed1021a16bc1 R11: 1ffff11021a16bc0 R12: dffffc0000000000
R13: 1ffff11022d22a83 R14: 1ffff11021a16bc1 R15: 0000000000000018
FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efe88676000 CR3: 00000001283f0000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 7b 08 jnp 0xa
2: 4d 89 fe mov %r15,%r14
5: 49 c1 ee 03 shr $0x3,%r14
9: 43 80 3c 26 00 cmpb $0x0,(%r14,%r12,1)
e: 74 08 je 0x18
10: 4c 89 ff mov %r15,%rdi
13: e8 16 6a 17 fd call 0xfd176a2e
18: 4c 89 7d d0 mov %r15,-0x30(%rbp)
1c: 4d 8b 3f mov (%r15),%r15
1f: 49 83 c7 18 add $0x18,%r15
23: 4c 89 f8 mov %r15,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 4c 89 ff mov %r15,%rdi
34: e8 f5 69 17 fd call 0xfd176a2e
39: 4d 8b 27 mov (%r15),%r12
3c: 4d rex.WRB
3d: 8d .byte 0x8d
3e: bc .byte 0xbc
3f: 24 .byte 0x24