syzkaller0: entered promiscuous mode
syzkaller0: entered allmulticast mode
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in net/ipv6/route.c:1095:9
index 212 is out of range for type 'const int[12]'
CPU: 0 UID: 0 PID: 8020 Comm: syz.4.641 Not tainted 6.15.0-rc4-syzkaller-00736-gcb9d6b2c2a60 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 ubsan_epilogue+0xa/0x40 lib/ubsan.c:231
 __ubsan_handle_out_of_bounds+0xe9/0xf0 lib/ubsan.c:453
 ip6_rt_type_to_error net/ipv6/route.c:1095 [inline]
 ip6_rt_init_dst_reject net/ipv6/route.c:1112 [inline]
 ip6_rt_init_dst net/ipv6/route.c:1137 [inline]
 ip6_rt_copy_init+0x8e7/0x970 net/ipv6/route.c:1175
 ip6_rt_pcpu_alloc net/ipv6/route.c:1424 [inline]
 rt6_make_pcpu_route net/ipv6/route.c:1467 [inline]
 ip6_pol_route+0xbac/0x1180 net/ipv6/route.c:2302
 pol_lookup_func include/net/ip6_fib.h:617 [inline]
 fib6_rule_lookup+0x55e/0x6f0 net/ipv6/fib6_rules.c:125
 ip6_route_input_lookup net/ipv6/route.c:2335 [inline]
 ip6_route_input+0x6ce/0xa50 net/ipv6/route.c:2638
 ip6_rcv_finish+0x141/0x2d0 net/ipv6/ip6_input.c:77
 NF_HOOK+0x309/0x3a0 include/linux/netfilter.h:314
 __netif_receive_skb_one_core net/core/dev.c:5941 [inline]
 __netif_receive_skb+0xd3/0x380 net/core/dev.c:6054
 netif_receive_skb_internal net/core/dev.c:6140 [inline]
 netif_receive_skb+0x1cb/0x790 net/core/dev.c:6199
 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
 tun_get_user+0x2879/0x3c20 drivers/net/tun.c:1938
 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1984
 new_sync_write fs/read_write.c:591 [inline]
 vfs_write+0x548/0xa90 fs/read_write.c:684
 ksys_write+0x145/0x250 fs/read_write.c:736
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7effe738e969
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007effe51f6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007effe75b5fa0 RCX: 00007effe738e969
RDX: 000000000000ffdd RSI: 00002000000000c0 RDI: 0000000000000008
RBP: 00007effe7410ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007effe75b5fa0 R15: 00007ffee8845118
 </TASK>
---[ end trace ]---