IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 6670 Comm: syz-executor4 Not tainted 4.4.150-g5541782 #19
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801cb206000 task.stack: ffff8800afe20000
RIP: 0010:[<ffffffff835acf33>]  [<ffffffff835acf33>] __read_once_size include/linux/compiler.h:218 [inline]
RIP: 0010:[<ffffffff835acf33>]  [<ffffffff835acf33>] sk_dst_get include/net/sock.h:1740 [inline]
RIP: 0010:[<ffffffff835acf33>]  [<ffffffff835acf33>] pppol2tp_connect+0x873/0x1910 net/l2tp/l2tp_ppp.c:762
RSP: 0018:ffff8800afe27b50  EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8801d4b40880 RCX: 1ffffffff0942cd1
RDX: 000000000000003b RSI: ffffffff835acf1b RDI: 00000000000001d8
RBP: ffff8800afe27d00 R08: ffff8801cb206928 R09: 0000000000000000
R10: 0000000000000001 R11: ffff8801cb206000 R12: ffff8801cc062280
R13: ffff8801d4b408b0 R14: 0000000000000000 R15: ffff8801cc062500
FS:  0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f772eb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00007f3cae1f4270 CR3: 00000001cb091000 CR4: 00000000001606f0
Stack:
 ffffffff835acebb 0000000300000005 ffff8800afe27c58 ffff880000000000
 ffff8801d4b40c50 ffff8801d4b40892 1ffff10015fc4f73 ffff8801cc062418
 ffff8801cc062680 0000000041b58ab3 ffffffff8424e708 ffffffff835ac6c0
Call Trace:
 [<ffffffff82f266a8>] SYSC_connect+0x1b8/0x300 net/socket.c:1558
 [<ffffffff82f28fe4>] SyS_connect+0x24/0x30 net/socket.c:1539
 [<ffffffff81006d94>] do_syscall_32_irqs_on arch/x86/entry/common.c:393 [inline]
 [<ffffffff81006d94>] do_fast_syscall_32+0x324/0x8b0 arch/x86/entry/common.c:460
 [<ffffffff838cca03>] sysenter_flags_fixed+0xd/0x1a
Code: fd 80 3d e0 85 45 01 00 0f 84 44 09 00 00 e8 c5 75 da fd 49 8d be d8 01 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 60 0d 00 00 4d 8b be d8 01 00 00 e8 b7 d4 cc 
RIP  [<ffffffff835acf33>] __read_once_size include/linux/compiler.h:218 [inline]
RIP  [<ffffffff835acf33>] sk_dst_get include/net/sock.h:1740 [inline]
RIP  [<ffffffff835acf33>] pppol2tp_connect+0x873/0x1910 net/l2tp/l2tp_ppp.c:762
 RSP <ffff8800afe27b50>
---[ end trace 90fbf3352fd799e1 ]---