general protection fault, probably for non-canonical address 0xdffffc000000005c: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000002e0-0x00000000000002e7]
CPU: 0 PID: 12 Comm: ksoftirqd/0 Not tainted 5.10.239-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__in6_dev_get include/net/addrconf.h:343 [inline]
RIP: 0010:ip6_ignore_linkdown include/net/addrconf.h:434 [inline]
RIP: 0010:find_match+0xa7/0xd60 net/ipv6/route.c:739
Code: 41 80 7c 05 00 00 74 08 4c 89 f7 e8 53 fb a7 fd 41 bc e0 02 00 00 4d 03 26 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 e7 e8 2b fb a7 fd 4d 8b 24 24 4d 85 e4 0f
RSP: 0018:ffffc900000c71b0 EFLAGS: 00010206
RAX: 000000000000005c RBX: 0000000000000003 RCX: dffffc0000000000
RDX: ffff88810024e2c0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900000c7238 R08: ffffc900000c7560 R09: ffffc900000c7570
R10: fffff52000018ece R11: 1ffff92000018eca R12: 00000000000002e0
R13: 1ffff1102423c624 R14: ffff8881211e3120 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000c25030 CR3: 0000000125724000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 rt6_nh_find_match+0xd9/0x140 net/ipv6/route.c:779
 nexthop_for_each_fib6_nh+0xf6/0x1e0 net/ipv4/nexthop.c:602
 __find_rr_leaf+0x50f/0x900 net/ipv6/route.c:820
 find_rr_leaf net/ipv6/route.c:848 [inline]
 rt6_select net/ipv6/route.c:892 [inline]
 fib6_table_lookup+0x2f4/0x9f0 net/ipv6/route.c:2190
 ip6_pol_route+0x145/0x1110 net/ipv6/route.c:2226
 ip6_pol_route_input+0x56/0x80 net/ipv6/route.c:2284
 pol_lookup_func include/net/ip6_fib.h:594 [inline]
 fib6_rule_lookup+0x2ef/0x560 net/ipv6/fib6_rules.c:120
 ip6_route_input_lookup net/ipv6/route.c:2296 [inline]
 ip6_route_input+0x58b/0x780 net/ipv6/route.c:2465
 ip6_rcv_finish_core net/ipv6/ip6_input.c:67 [inline]
 ip6_rcv_finish+0x155/0x360 net/ipv6/ip6_input.c:78
 NF_HOOK include/linux/netfilter.h:299 [inline]
 ipv6_rcv+0xec/0x210 net/ipv6/ip6_input.c:301
 __netif_receive_skb_one_core net/core/dev.c:5402 [inline]
 __netif_receive_skb+0xc8/0x280 net/core/dev.c:5516
 process_backlog+0x368/0x600 net/core/dev.c:6423
 napi_poll net/core/dev.c:6874 [inline]
 net_rx_action+0x432/0xdd0 net/core/dev.c:6944
 __do_softirq+0x255/0x563 kernel/softirq.c:309
 run_ksoftirqd+0x23/0x30 kernel/softirq.c:670
 smpboot_thread_fn+0x474/0x850 kernel/smpboot.c:164
 kthread+0x346/0x3d0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
Modules linked in:
---[ end trace 6c50bb19124368b2 ]---
RIP: 0010:__in6_dev_get include/net/addrconf.h:343 [inline]
RIP: 0010:ip6_ignore_linkdown include/net/addrconf.h:434 [inline]
RIP: 0010:find_match+0xa7/0xd60 net/ipv6/route.c:739
Code: 41 80 7c 05 00 00 74 08 4c 89 f7 e8 53 fb a7 fd 41 bc e0 02 00 00 4d 03 26 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 e7 e8 2b fb a7 fd 4d 8b 24 24 4d 85 e4 0f
RSP: 0018:ffffc900000c71b0 EFLAGS: 00010206
RAX: 000000000000005c RBX: 0000000000000003 RCX: dffffc0000000000
RDX: ffff88810024e2c0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900000c7238 R08: ffffc900000c7560 R09: ffffc900000c7570
R10: fffff52000018ece R11: 1ffff92000018eca R12: 00000000000002e0
R13: 1ffff1102423c624 R14: ffff8881211e3120 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000c25030 CR3: 0000000125724000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Rebooting in 86400 seconds..
----------------
Code disassembly (best guess):
   0:	41 80 7c 05 00 00    	cmpb   $0x0,0x0(%r13,%rax,1)
   6:	74 08                	je     0x10
   8:	4c 89 f7             	mov    %r14,%rdi
   b:	e8 53 fb a7 fd       	call   0xfda7fb63
  10:	41 bc e0 02 00 00    	mov    $0x2e0,%r12d
  16:	4d 03 26             	add    (%r14),%r12
  19:	4c 89 e0             	mov    %r12,%rax
  1c:	48 c1 e8 03          	shr    $0x3,%rax
  20:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  27:	fc ff df
* 2a:	80 3c 08 00          	cmpb   $0x0,(%rax,%rcx,1) <-- trapping instruction
  2e:	74 08                	je     0x38
  30:	4c 89 e7             	mov    %r12,%rdi
  33:	e8 2b fb a7 fd       	call   0xfda7fb63
  38:	4d 8b 24 24          	mov    (%r12),%r12
  3c:	4d 85 e4             	test   %r12,%r12
  3f:	0f                   	.byte 0xf