netdevsim netdevsim1 netdevsim1 (unregistering): unset [1, 1] type 2 family 0 port 48522 - 0
netdevsim netdevsim1 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim1 netdevsim0 (unregistering): unset [1, 1] type 2 family 0 port 48522 - 0
general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 PID: 12517 Comm: kworker/u4:13 Not tainted 5.16.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:vlan_group_set_device net/8021q/vlan.h:90 [inline]
RIP: 0010:unregister_vlan_dev+0x278/0x550 net/8021q/vlan.c:111
Code: d0 02 00 00 48 8d 44 d0 02 41 81 e5 ff 01 00 00 48 8b 44 c5 10 4e 8d 2c e8 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 be 02 00 00 49 c7 45 00 00 00 00 00 e8 21 40 1d
RSP: 0018:ffffc90003eafad0 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff88807b530000 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 1ffff110051b2a44 RDI: ffff888028d95220
RBP: ffff888028d95200 R08: ffffffff8ac91880 R09: ffffffff885a5899
R10: 0000000000000002 R11: 0000000000000081 R12: ffff8880253b0000
R13: 0000000000000000 R14: ffff888028d95208 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff5cb52a77 CR3: 0000000018891000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
default_device_exit_batch+0x229/0x3c0 net/core/dev.c:11602
ops_exit_list+0x10d/0x160 net/core/net_namespace.c:171
cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:593
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
</TASK>
Modules linked in:
---[ end trace 4637053460a95901 ]---
RIP: 0010:vlan_group_set_device net/8021q/vlan.h:90 [inline]
RIP: 0010:unregister_vlan_dev+0x278/0x550 net/8021q/vlan.c:111
Code: d0 02 00 00 48 8d 44 d0 02 41 81 e5 ff 01 00 00 48 8b 44 c5 10 4e 8d 2c e8 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 be 02 00 00 49 c7 45 00 00 00 00 00 e8 21 40 1d
RSP: 0018:ffffc90003eafad0 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff88807b530000 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 1ffff110051b2a44 RDI: ffff888028d95220
RBP: ffff888028d95200 R08: ffffffff8ac91880 R09: ffffffff885a5899
R10: 0000000000000002 R11: 0000000000000081 R12: ffff8880253b0000
R13: 0000000000000000 R14: ffff888028d95208 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4b1159d740 CR3: 00000000198c0000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: d0 02 rolb (%rdx)
2: 00 00 add %al,(%rax)
4: 48 8d 44 d0 02 lea 0x2(%rax,%rdx,8),%rax
9: 41 81 e5 ff 01 00 00 and $0x1ff,%r13d
10: 48 8b 44 c5 10 mov 0x10(%rbp,%rax,8),%rax
15: 4e 8d 2c e8 lea (%rax,%r13,8),%r13
19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
20: fc ff df
23: 4c 89 ea mov %r13,%rdx
26: 48 c1 ea 03 shr $0x3,%rdx
* 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction
2e: 0f 85 be 02 00 00 jne 0x2f2
34: 49 c7 45 00 00 00 00 movq $0x0,0x0(%r13)
3b: 00
3c: e8 .byte 0xe8
3d: 21 40 1d and %eax,0x1d(%rax)