mip6: mip6_rthdr_init_state: spi is not 0: 3523477504 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 21758 Comm: syz-executor7 Not tainted 4.16.0-rc4+ #260 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ip6_xmit+0xc1f/0x2260 net/ipv6/ip6_output.c:264 RSP: 0018:ffff8801cb4b75a8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff8801d7dc5440 RCX: ffffffff84ef5056 RDX: 000000002000c0c8 RSI: ffffc90001982000 RDI: 0000000100060643 RBP: ffff8801cb4b7818 R08: 1ffff1003afb8a01 R09: ffff8801cb4b7768 R10: ffff8801cb4b75a8 R11: ffffed0039696ef4 R12: 0000000100060373 R13: ffffed0039696eed R14: 0000000000000040 R15: ffff8801a6f7a2e4 FS: 00007fb59d5c9700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1bbfe11db8 CR3: 00000001bd891006 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: inet6_csk_xmit+0x2fc/0x580 net/ipv6/inet6_connection_sock.c:139 l2tp_xmit_core net/l2tp/l2tp_core.c:1053 [inline] l2tp_xmit_skb+0x105f/0x1410 net/l2tp/l2tp_core.c:1148 pppol2tp_sendmsg+0x470/0x670 net/l2tp/l2tp_ppp.c:341 sock_sendmsg_nosec net/socket.c:629 [inline] sock_sendmsg+0xca/0x110 net/socket.c:639 SYSC_sendto+0x361/0x5c0 net/socket.c:1748 SyS_sendto+0x40/0x50 net/socket.c:1716 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x453e69 RSP: 002b:00007fb59d5c8c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fb59d5c96d4 RCX: 0000000000453e69 RDX: 000000000000100b RSI: 0000000020001180 RDI: 0000000000000014 RBP: 000000000072bf58 R08: 00000000200021c0 R09: 0000000000000080 R10: 0000000000040001 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000004ca R14: 00000000006f7390 R15: 0000000000000001 Code: 4d 8b a4 24 18 01 00 00 4d 85 e4 74 67 e8 8a b9 81 fc 49 8d bc 24 d0 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 52 13 00 00 48 8b 95 e0 fd ff ff 48 b8 00 00 RIP: ip6_xmit+0xc1f/0x2260 net/ipv6/ip6_output.c:264 RSP: ffff8801cb4b75a8 ---[ end trace 2f427480ca3bfa11 ]--- Kernel panic - not syncing: Fatal exception in interrupt Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..