Oops: general protection fault, probably for non-canonical address 0xdffffc000000014a: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000a50-0x0000000000000a57]
CPU: 0 UID: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 6.16.0-rc7-syzkaller-00127-g302f88ff3584 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:ip6_ignore_linkdown include/net/addrconf.h:448 [inline]
RIP: 0010:find_match+0x12c/0xc90 net/ipv6/route.c:781
Code: c2 01 00 00 e8 c5 1c 99 f7 49 bc 00 00 00 00 00 fc ff df 48 85 db 0f 84 05 0a 00 00 48 81 c3 54 06 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 32 0a 00 00 8b 1b 31 ff 89 de e8 cc 20
RSP: 0018:ffffc9000041ee20 EFLAGS: 00010203
RAX: 000000000000014a RBX: 0000000000000a54 RCX: ffff88801af0c880
RDX: 0000000000000100 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 1ffff1100aee4819 R08: ffffc9000041f120 R09: ffffc9000041f130
R10: ffffc9000041ef80 R11: fffff52000083df2 R12: dffffc0000000000
R13: 0000000000000003 R14: 1ffff1100aee481b R15: ffff8880577240df
FS:  0000000000000000(0000) GS:ffff88808d218000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563045661008 CR3: 0000000056507000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __find_rr_leaf+0x23a/0x6d0 net/ipv6/route.c:869
 find_rr_leaf net/ipv6/route.c:890 [inline]
 rt6_select net/ipv6/route.c:934 [inline]
 fib6_table_lookup+0x39f/0xa80 net/ipv6/route.c:2232
 ip6_pol_route+0x222/0x1180 net/ipv6/route.c:2268
 pol_lookup_func include/net/ip6_fib.h:617 [inline]
 fib6_rule_lookup+0x52f/0x6f0 net/ipv6/fib6_rules.c:120
 ip6_route_input_lookup net/ipv6/route.c:2337 [inline]
 ip6_route_input+0x6ce/0xa50 net/ipv6/route.c:2640
 ip6_rcv_finish+0x141/0x2d0 net/ipv6/ip6_input.c:77
 NF_HOOK+0x30c/0x3a0 include/linux/netfilter.h:317
 __netif_receive_skb_one_core net/core/dev.c:5977 [inline]
 __netif_receive_skb+0xd3/0x380 net/core/dev.c:6090
 process_backlog+0x60e/0x14f0 net/core/dev.c:6442
 __napi_poll+0xc4/0x480 net/core/dev.c:7414
 napi_poll net/core/dev.c:7478 [inline]
 net_rx_action+0x707/0xe30 net/core/dev.c:7605
 handle_softirqs+0x286/0x870 kernel/softirq.c:579
 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:968
 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:164
 kthread+0x711/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ip6_ignore_linkdown include/net/addrconf.h:448 [inline]
RIP: 0010:find_match+0x12c/0xc90 net/ipv6/route.c:781
Code: c2 01 00 00 e8 c5 1c 99 f7 49 bc 00 00 00 00 00 fc ff df 48 85 db 0f 84 05 0a 00 00 48 81 c3 54 06 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 32 0a 00 00 8b 1b 31 ff 89 de e8 cc 20
RSP: 0018:ffffc9000041ee20 EFLAGS: 00010203
RAX: 000000000000014a RBX: 0000000000000a54 RCX: ffff88801af0c880
RDX: 0000000000000100 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 1ffff1100aee4819 R08: ffffc9000041f120 R09: ffffc9000041f130
R10: ffffc9000041ef80 R11: fffff52000083df2 R12: dffffc0000000000
R13: 0000000000000003 R14: 1ffff1100aee481b R15: ffff8880577240df
FS:  0000000000000000(0000) GS:ffff88808d218000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563045661008 CR3: 0000000056507000 CR4: 0000000000352ef0
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	00 00                	add    %al,(%rax)
   2:	e8 c5 1c 99 f7       	call   0xf7991ccc
   7:	49 bc 00 00 00 00 00 	movabs $0xdffffc0000000000,%r12
   e:	fc ff df
  11:	48 85 db             	test   %rbx,%rbx
  14:	0f 84 05 0a 00 00    	je     0xa1f
  1a:	48 81 c3 54 06 00 00 	add    $0x654,%rbx
  21:	48 89 d8             	mov    %rbx,%rax
  24:	48 c1 e8 03          	shr    $0x3,%rax
* 28:	42 0f b6 04 20       	movzbl (%rax,%r12,1),%eax <-- trapping instruction
  2d:	84 c0                	test   %al,%al
  2f:	0f 85 32 0a 00 00    	jne    0xa67
  35:	8b 1b                	mov    (%rbx),%ebx
  37:	31 ff                	xor    %edi,%edi
  39:	89 de                	mov    %ebx,%esi
  3b:	e8                   	.byte 0xe8
  3c:	cc                   	int3
  3d:	20                   	.byte 0x20