veth1_vlan: left promiscuous mode
veth0_vlan: left promiscuous mode
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000012: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000090-0x0000000000000097]
CPU: 2 UID: 0 PID: 1110 Comm: kworker/u32:9 Not tainted 6.12.0-rc3-syzkaller-00319-gb04ae0f45168 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: netns cleanup_net
RIP: 0010:__fib6_drop_pcpu_from.part.0+0x199/0x510 net/ipv6/ip6_fib.c:987
Code: 48 c1 ea 03 42 80 3c 32 00 0f 85 5e 03 00 00 4c 8b 28 4d 85 ed 74 2e e8 d5 99 c0 f7 49 8d bd 90 00 00 00 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 0f 85 24 03 00 00 49 8b 85 90 00 00 00 4c 39 e0 0f
RSP: 0018:ffffc90005cef000 EFLAGS: 00010206
RAX: 0000000000000012 RBX: 0000000000000001 RCX: 1ffffffff1b4c571
RDX: ffff888026dbc880 RSI: ffffffff89cce98b RDI: 0000000000000091
RBP: ffff88804a08b8b8 R08: 0000000000000005 R09: 0000000000000007
R10: 0000000000000001 R11: 0000000000000000 R12: ffff88804a08b800
R13: 0000000000000001 R14: dffffc0000000000 R15: ffffed1009411722
FS:  0000000000000000(0000) GS:ffff88806a800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fabb7bbdd58 CR3: 000000002fd14000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __fib6_drop_pcpu_from net/ipv6/ip6_fib.c:1030 [inline]
 fib6_drop_pcpu_from net/ipv6/ip6_fib.c:1031 [inline]
 fib6_purge_rt+0x80c/0x9e0 net/ipv6/ip6_fib.c:1042
 fib6_del_route net/ipv6/ip6_fib.c:2002 [inline]
 fib6_del+0xa70/0x1790 net/ipv6/ip6_fib.c:2047
 fib6_clean_node+0x426/0x5b0 net/ipv6/ip6_fib.c:2209
 fib6_walk_continue+0x44f/0x8d0 net/ipv6/ip6_fib.c:2131
 fib6_walk+0x182/0x370 net/ipv6/ip6_fib.c:2179
 fib6_clean_tree+0xd7/0x120 net/ipv6/ip6_fib.c:2259
 __fib6_clean_all+0x100/0x2d0 net/ipv6/ip6_fib.c:2275
 rt6_sync_down_dev net/ipv6/route.c:4908 [inline]
 rt6_disable_ip+0x2ef/0x940 net/ipv6/route.c:4913
 addrconf_ifdown.isra.0+0x126/0x1af0 net/ipv6/addrconf.c:3858
 addrconf_notify+0x220/0x19c0 net/ipv6/addrconf.c:3781
 notifier_call_chain+0xb9/0x410 kernel/notifier.c:93
 call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:1996
 call_netdevice_notifiers_extack net/core/dev.c:2034 [inline]
 call_netdevice_notifiers net/core/dev.c:2048 [inline]
 dev_close_many+0x333/0x6a0 net/core/dev.c:1589
 unregister_netdevice_many_notify+0x489/0x1e50 net/core/dev.c:11377
 unregister_netdevice_many net/core/dev.c:11465 [inline]
 default_device_exit_batch+0x861/0xae0 net/core/dev.c:11948
 ops_exit_list+0x128/0x180 net/core/net_namespace.c:178
 cleanup_net+0x5b7/0xb40 net/core/net_namespace.c:626
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__fib6_drop_pcpu_from.part.0+0x199/0x510 net/ipv6/ip6_fib.c:987
Code: 48 c1 ea 03 42 80 3c 32 00 0f 85 5e 03 00 00 4c 8b 28 4d 85 ed 74 2e e8 d5 99 c0 f7 49 8d bd 90 00 00 00 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 0f 85 24 03 00 00 49 8b 85 90 00 00 00 4c 39 e0 0f
RSP: 0018:ffffc90005cef000 EFLAGS: 00010206
RAX: 0000000000000012 RBX: 0000000000000001 RCX: 1ffffffff1b4c571
RDX: ffff888026dbc880 RSI: ffffffff89cce98b RDI: 0000000000000091
RBP: ffff88804a08b8b8 R08: 0000000000000005 R09: 0000000000000007
R10: 0000000000000001 R11: 0000000000000000 R12: ffff88804a08b800
R13: 0000000000000001 R14: dffffc0000000000 R15: ffffed1009411722
FS:  0000000000000000(0000) GS:ffff88806a800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fabb7bbdd58 CR3: 000000002fd14000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	48 c1 ea 03          	shr    $0x3,%rdx
   4:	42 80 3c 32 00       	cmpb   $0x0,(%rdx,%r14,1)
   9:	0f 85 5e 03 00 00    	jne    0x36d
   f:	4c 8b 28             	mov    (%rax),%r13
  12:	4d 85 ed             	test   %r13,%r13
  15:	74 2e                	je     0x45
  17:	e8 d5 99 c0 f7       	call   0xf7c099f1
  1c:	49 8d bd 90 00 00 00 	lea    0x90(%r13),%rdi
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 30 00       	cmpb   $0x0,(%rax,%r14,1) <-- trapping instruction
  2f:	0f 85 24 03 00 00    	jne    0x359
  35:	49 8b 85 90 00 00 00 	mov    0x90(%r13),%rax
  3c:	4c 39 e0             	cmp    %r12,%rax
  3f:	0f                   	.byte 0xf