------------[ cut here ]------------ kernel BUG at net/ipv6/route.c:1296! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 14159 Comm: syz-executor.4 Not tainted 5.1.0+ #8 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rt6_make_pcpu_route net/ipv6/route.c:1296 [inline] RIP: 0010:ip6_pol_route+0x81b/0xfa0 net/ipv6/route.c:1939 Code: 48 03 1c c5 60 70 6f 88 be 08 00 00 00 48 89 df e8 0a 87 87 fb 31 c0 f0 4c 0f b1 2b 48 85 c0 0f 84 30 fb ff ff e8 f5 38 4f fb <0f> 0b e8 ee 38 4f fb e8 99 43 3d fb 31 ff 41 89 c7 89 c6 e8 1d 3a RSP: 0018:ffff888089566af8 EFLAGS: 00010216 RAX: 0000000000040000 RBX: ffffe8ffffc6d010 RCX: ffffc9000a20b000 RDX: 00000000000020d2 RSI: ffffffff8621a0eb RDI: ffffe8ffffc6d010 RBP: ffff888089566c20 R08: 1ffffd1ffff8da02 R09: fffff91ffff8da03 R10: fffff91ffff8da02 R11: ffffe8ffffc6d017 R12: 0000000000000001 R13: ffff88808d544940 R14: ffff888089566b48 R15: ffff88808d544980 FS: 00007f360bbc6700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32f22000 CR3: 000000005a02a000 CR4: 00000000001406f0 Call Trace: ip6_pol_route_output+0x54/0x70 net/ipv6/route.c:2112 fib6_rule_lookup+0x27f/0x5a0 net/ipv6/fib6_rules.c:120 ip6_route_output_flags+0x2c4/0x350 net/ipv6/route.c:2141 ip6_dst_lookup_tail+0x1124/0x1b30 net/ipv6/ip6_output.c:993 ip6_dst_lookup_flow+0xa8/0x220 net/ipv6/ip6_output.c:1094 tcp_v6_send_response+0xde9/0x1f80 net/ipv6/tcp_ipv6.c:903 tcp_v6_send_reset+0x77a/0xf90 net/ipv6/tcp_ipv6.c:984 tcp_v6_rcv+0x1e8f/0x3580 net/ipv6/tcp_ipv6.c:1596 ip6_protocol_deliver_rcu+0x315/0x1720 net/ipv6/ip6_input.c:401 ip6_input_finish+0x84/0x170 net/ipv6/ip6_input.c:442 NF_HOOK include/linux/netfilter.h:305 [inline] NF_HOOK include/linux/netfilter.h:299 [inline] ip6_input+0xe4/0x3f0 net/ipv6/ip6_input.c:451 dst_input include/net/dst.h:439 [inline] ip6_rcv_finish+0x1e7/0x320 net/ipv6/ip6_input.c:80 NF_HOOK include/linux/netfilter.h:305 [inline] NF_HOOK include/linux/netfilter.h:299 [inline] ipv6_rcv+0x10e/0x420 net/ipv6/ip6_input.c:276 __netif_receive_skb_one_core+0x12a/0x1f0 net/core/dev.c:4990 __netif_receive_skb+0x2c/0x1d0 net/core/dev.c:5104 netif_receive_skb_internal+0x117/0x5c0 net/core/dev.c:5207 napi_frags_finish net/core/dev.c:5774 [inline] napi_gro_frags+0xade/0xd10 net/core/dev.c:5848 tun_get_user+0x2f3f/0x3ff0 drivers/net/tun.c:1991 tun_chr_write_iter+0xbd/0x156 drivers/net/tun.c:2037 call_write_iter include/linux/fs.h:1872 [inline] do_iter_readv_writev+0x5fd/0x900 fs/read_write.c:693 do_iter_write fs/read_write.c:970 [inline] do_iter_write+0x184/0x610 fs/read_write.c:951 vfs_writev+0x1b3/0x2f0 fs/read_write.c:1015 do_writev+0x15b/0x330 fs/read_write.c:1058 __do_sys_writev fs/read_write.c:1131 [inline] __se_sys_writev fs/read_write.c:1128 [inline] __x64_sys_writev+0x75/0xb0 fs/read_write.c:1128 do_syscall_64+0x103/0x670 arch/x86/entry/common.c:298 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458c61 Code: 75 14 b8 14 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 e4 b9 fb ff c3 48 83 ec 08 e8 1a 2d 00 00 48 89 04 24 b8 14 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 63 2d 00 00 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007f360bbc5ba0 EFLAGS: 00000293 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 000000000000004a RCX: 0000000000458c61 RDX: 0000000000000001 RSI: 00007f360bbc5c00 RDI: 00000000000000f0 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f360bbc66d4 R13: 00000000004c77d2 R14: 00000000004dd9d0 R15: 00000000ffffffff Modules linked in: ---[ end trace 7bcae0c7d6674c8e ]--- RIP: 0010:rt6_make_pcpu_route net/ipv6/route.c:1296 [inline] RIP: 0010:ip6_pol_route+0x81b/0xfa0 net/ipv6/route.c:1939 Code: 48 03 1c c5 60 70 6f 88 be 08 00 00 00 48 89 df e8 0a 87 87 fb 31 c0 f0 4c 0f b1 2b 48 85 c0 0f 84 30 fb ff ff e8 f5 38 4f fb <0f> 0b e8 ee 38 4f fb e8 99 43 3d fb 31 ff 41 89 c7 89 c6 e8 1d 3a RSP: 0018:ffff888089566af8 EFLAGS: 00010216 RAX: 0000000000040000 RBX: ffffe8ffffc6d010 RCX: ffffc9000a20b000 RDX: 00000000000020d2 RSI: ffffffff8621a0eb RDI: ffffe8ffffc6d010 RBP: ffff888089566c20 R08: 1ffffd1ffff8da02 R09: fffff91ffff8da03 R10: fffff91ffff8da02 R11: ffffe8ffffc6d017 R12: 0000000000000001 R13: ffff88808d544940 R14: ffff888089566b48 R15: ffff88808d544980 FS: 00007f360bbc6700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32f22000 CR3: 000000005a02a000 CR4: 00000000001406f0