general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 PID: 18718 Comm: kworker/u4:0 Not tainted 5.18.0-rc7-syzkaller-00121-g3d7285a335ed #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: tipc_rcv tipc_topsrv_accept
RIP: 0010:kernel_accept+0x1e5/0x410 net/socket.c:3418
Code: 48 8b 18 48 83 c3 20 48 89 d8 48 c1 e8 03 80 3c 28 00 74 08 48 89 df e8 39 90 b9 f9 48 8b 1b 48 83 c3 08 48 89 d8 48 c1 e8 03 <80> 3c 28 00 74 08 48 89 df e8 1d 90 b9 f9 48 8b 3b e8 c5 f2 5c f9
RSP: 0018:ffffc90003ccfb18 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff888023aa5880
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff881d6c6f R09: fffffbfff1f6442b
R10: fffffbfff1f6442b R11: 1ffffffff1f6442a R12: 0000000000000000
R13: 1ffff110060f1184 R14: 0000000000000000 R15: 1ffff92000799f78
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055eef3721000 CR3: 0000000044618000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 00000000fffffffa DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
tipc_topsrv_accept+0xd4/0x2c0 net/tipc/topsrv.c:460
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:kernel_accept+0x1e5/0x410 net/socket.c:3418
Code: 48 8b 18 48 83 c3 20 48 89 d8 48 c1 e8 03 80 3c 28 00 74 08 48 89 df e8 39 90 b9 f9 48 8b 1b 48 83 c3 08 48 89 d8 48 c1 e8 03 <80> 3c 28 00 74 08 48 89 df e8 1d 90 b9 f9 48 8b 3b e8 c5 f2 5c f9
RSP: 0018:ffffc90003ccfb18 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff888023aa5880
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff881d6c6f R09: fffffbfff1f6442b
R10: fffffbfff1f6442b R11: 1ffffffff1f6442a R12: 0000000000000000
R13: 1ffff110060f1184 R14: 0000000000000000 R15: 1ffff92000799f78
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f34f936b998 CR3: 000000002494d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 00000000fffffffa DR6: 00000000ffff0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 48 8b 18 mov (%rax),%rbx
3: 48 83 c3 20 add $0x20,%rbx
7: 48 89 d8 mov %rbx,%rax
a: 48 c1 e8 03 shr $0x3,%rax
e: 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1)
12: 74 08 je 0x1c
14: 48 89 df mov %rbx,%rdi
17: e8 39 90 b9 f9 callq 0xf9b99055
1c: 48 8b 1b mov (%rbx),%rbx
1f: 48 83 c3 08 add $0x8,%rbx
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1) <-- trapping instruction
2e: 74 08 je 0x38
30: 48 89 df mov %rbx,%rdi
33: e8 1d 90 b9 f9 callq 0xf9b99055
38: 48 8b 3b mov (%rbx),%rdi
3b: e8 c5 f2 5c f9 callq 0xf95cf305