------------[ cut here ]------------ kernel BUG at net/ipv6/route.c:1268! invalid opcode: 0000 [#1] SMP KASAN CPU: 1 PID: 18927 Comm: syz-executor7 Not tainted 4.18.0-rc7+ #41 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rt6_make_pcpu_route net/ipv6/route.c:1268 [inline] RIP: 0010:ip6_pol_route+0x9e3/0x1250 net/ipv6/route.c:1925 Code: 31 e4 e8 10 de 04 fc 4c 89 e0 f0 4c 0f b1 33 31 ff 49 89 c4 48 89 c6 e8 fb 12 c7 fb 4d 85 e4 0f 84 0d fa ff ff e8 bd 11 c7 fb <0f> 0b e8 b6 11 c7 fb e8 81 7d b1 fb 31 ff 89 c6 88 85 e0 fd ff ff RSP: 0018:ffff88019676ed48 EFLAGS: 00010246 netlink: 8 bytes leftover after parsing attributes in process `syz-executor4'. RAX: 0000000000040000 RBX: ffffe8ffffd6bba8 RCX: ffffc90004427000 RDX: 0000000000040000 RSI: ffffffff85b50673 RDI: 0000000000000007 RBP: ffff88019676ef78 R08: ffff88019beae240 R09: fffff91ffffad775 R10: fffff91ffffad775 R11: ffffe8ffffd6bbaf R12: ffff8801ade9a3c0 R13: 0000000000000001 R14: ffff8801ade9a280 R15: 0000000000000001 FS: 00007fcee25ac700(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fba61dee198 CR3: 00000001a25fb000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ip6_pol_route_output+0x54/0x70 net/ipv6/route.c:2098 fib6_rule_lookup+0x26e/0x700 net/ipv6/fib6_rules.c:122 netlink: 8 bytes leftover after parsing attributes in process `syz-executor4'. ip6_route_output_flags+0x2c5/0x350 net/ipv6/route.c:2126 ip6_dst_lookup_tail+0x1278/0x1da0 net/ipv6/ip6_output.c:978 ip6_dst_lookup_flow+0xc8/0x270 net/ipv6/ip6_output.c:1079 inet6_csk_route_socket+0x8cb/0x1030 net/ipv6/inet6_connection_sock.c:110 inet6_csk_xmit+0x118/0x630 net/ipv6/inet6_connection_sock.c:125 l2tp_xmit_core net/l2tp/l2tp_core.c:1040 [inline] l2tp_xmit_skb+0x1406/0x17c0 net/l2tp/l2tp_core.c:1144 pppol2tp_sendmsg+0x4ae/0x6c0 net/l2tp/l2tp_ppp.c:341 sock_sendmsg_nosec net/socket.c:642 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:652 ___sys_sendmsg+0x51d/0x930 net/socket.c:2126 __sys_sendmmsg+0x240/0x6f0 net/socket.c:2221 __do_sys_sendmmsg net/socket.c:2250 [inline] __se_sys_sendmmsg net/socket.c:2247 [inline] __x64_sys_sendmmsg+0x9d/0x100 net/socket.c:2247 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x456b29 Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fcee25abc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007fcee25ac6d4 RCX: 0000000000456b29 RDX: 00000000000003e8 RSI: 0000000020005fc0 RDI: 0000000000000015 RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff netlink: 8 bytes leftover after parsing attributes in process `syz-executor3'. R13: 00000000004d3158 R14: 00000000004c7ec1 R15: 0000000000000000 Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) ---[ end trace 23aaf50e72080c31 ]--- RIP: 0010:rt6_make_pcpu_route net/ipv6/route.c:1268 [inline] RIP: 0010:ip6_pol_route+0x9e3/0x1250 net/ipv6/route.c:1925 Code: 31 e4 e8 10 de 04 fc 4c 89 e0 f0 4c 0f b1 33 31 ff 49 89 c4 48 89 c6 e8 fb 12 c7 fb 4d 85 e4 0f 84 0d fa ff ff e8 bd 11 c7 fb <0f> 0b e8 b6 11 c7 fb e8 81 7d b1 fb 31 ff 89 c6 88 85 e0 fd ff ff RSP: 0018:ffff88019676ed48 EFLAGS: 00010246 RAX: 0000000000040000 RBX: ffffe8ffffd6bba8 RCX: ffffc90004427000 RDX: 0000000000040000 RSI: ffffffff85b50673 RDI: 0000000000000007 RBP: ffff88019676ef78 R08: ffff88019beae240 R09: fffff91ffffad775 R10: fffff91ffffad775 R11: ffffe8ffffd6bbaf R12: ffff8801ade9a3c0 R13: 0000000000000001 R14: ffff8801ade9a280 R15: 0000000000000001 FS: 00007fcee25ac700(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fba61dee198 CR3: 00000001a25fb000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400