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: 7784 Comm: syz-executor2 Not tainted 4.4.148-gf057ff9 #17
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801cd0e9800 task.stack: ffff8800a5390000
RIP: 0010:[<ffffffff835ac513>]  [<ffffffff835ac513>] __read_once_size include/linux/compiler.h:218 [inline]
RIP: 0010:[<ffffffff835ac513>]  [<ffffffff835ac513>] sk_dst_get include/net/sock.h:1740 [inline]
RIP: 0010:[<ffffffff835ac513>]  [<ffffffff835ac513>] pppol2tp_connect+0x873/0x1910 net/l2tp/l2tp_ppp.c:762
RSP: 0018:ffff8800a5397b50  EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8800a4f81980 RCX: ffffc9000106e000
RDX: 000000000000003b RSI: ffffffff835ac4fb RDI: 00000000000001d8
RBP: ffff8800a5397d00 R08: ffff8801cd0ea128 R09: 0000000000000000
R10: 0000000000000001 R11: ffff8801cd0e9800 R12: ffff8801d1bba280
R13: ffff8800a4f819b0 R14: 0000000000000000 R15: ffff8801ce9e2c80
FS:  0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f5734b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00007ffd59399fd8 CR3: 00000001ceb56000 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff835ac49b 0000000200000005 ffff8800a5397c58 ffff880000000000
 ffff8800a4f81d50 ffff8800a4f81992 1ffff10014a72f73 ffff8801d1bba418
 ffff8801ce9e2e00 0000000041b58ab3 ffffffff8424e6d8 ffffffff835abca0
Call Trace:
 [<ffffffff82f25cd8>] SYSC_connect+0x1b8/0x300 net/socket.c:1558
 [<ffffffff82f28614>] 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
 [<ffffffff838cc003>] sysenter_flags_fixed+0xd/0x1a
Code: fd 80 3d 00 90 45 01 00 0f 84 44 09 00 00 e8 45 7a 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 37 d9 cc 
RIP  [<ffffffff835ac513>] __read_once_size include/linux/compiler.h:218 [inline]
RIP  [<ffffffff835ac513>] sk_dst_get include/net/sock.h:1740 [inline]
RIP  [<ffffffff835ac513>] pppol2tp_connect+0x873/0x1910 net/l2tp/l2tp_ppp.c:762
 RSP <ffff8800a5397b50>
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready
---[ end trace 6d64610222321a2e ]---
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready
netlink: 8 bytes leftover after parsing attributes in process `syz-executor4'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor4'.