l2tp_ppp: sess 59/32096: set debug=f55d40e
l2tp_ppp: sess 59/32096: get L2TP stats
------------[ cut here ]------------
kernel BUG at net/l2tp/l2tp_ppp.c:176!
invalid opcode: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 23856 Comm: syz-executor3 Not tainted 4.15.0-rc9+ #207
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:pppol2tp_sock_to_session net/l2tp/l2tp_ppp.c:176 [inline]
RIP: 0010:pppol2tp_sendmsg+0x512/0x670 net/l2tp/l2tp_ppp.c:304
RSP: 0018:ffff8801bbc57be8 EFLAGS: 00010216
RAX: 0000000000010000 RBX: ffff8801d86193c0 RCX: ffffffff8506e9f2
RDX: 0000000000000089 RSI: ffffc9000321a000 RDI: ffff8801d86197a0
RBP: ffff8801bbc57c58 R08: 0000000000000000 R09: 1ffff1003778af0d
R10: 0000000000000003 R11: 0000000000000000 R12: ffff8801c39d89c0
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801cf4cfc80
FS:  00007fdf4eb66700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020f48fb8 CR3: 00000001bd0d7001 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 sock_sendmsg_nosec net/socket.c:630 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:640
 SYSC_sendto+0x361/0x5c0 net/socket.c:1721
 SyS_sendto+0x40/0x50 net/socket.c:1689
 entry_SYSCALL_64_fastpath+0x29/0xa0
RIP: 0033:0x452f19
RSP: 002b:00007fdf4eb65c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452f19
RDX: 0000000000000000 RSI: 0000000020d18ff5 RDI: 0000000000000013
RBP: 0000000000000052 R08: 00000000205efff0 R09: 0000000000000010
R10: 0000000020008047 R11: 0000000000000212 R12: 00000000006ef850
R13: 00000000ffffffff R14: 00007fdf4eb666d4 R15: 0000000000000000
Code: 15 4a 69 fc 48 8b 7d d0 e8 0c db 54 fd 84 c0 74 0d e8 03 4a 69 fc 48 89 df e8 1b 4c 2b ff 41 bd f7 ff ff ff eb 86 e8 ee 49 69 fc <0f> 0b 41 bd 95 ff ff ff e9 74 ff ff ff e8 7c 4c a1 fc e9 77 fb 
RIP: pppol2tp_sock_to_session net/l2tp/l2tp_ppp.c:176 [inline] RSP: ffff8801bbc57be8
RIP: pppol2tp_sendmsg+0x512/0x670 net/l2tp/l2tp_ppp.c:304 RSP: ffff8801bbc57be8
---[ end trace 7cd98c1968ab9cc7 ]---
------------[ cut here ]------------
kernel BUG at net/l2tp/l2tp_ppp.c:176!
invalid opcode: 0000 [#2] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 23859 Comm: syz-executor3 Tainted: G      D          4.15.0-rc9+ #207
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:pppol2tp_sock_to_session net/l2tp/l2tp_ppp.c:176 [inline]
RIP: 0010:pppol2tp_sendmsg+0x512/0x670 net/l2tp/l2tp_ppp.c:304
RSP: 0018:ffff8801d16f7be8 EFLAGS: 00010216
RAX: 0000000000010000 RBX: ffff8801d86193c0 RCX: ffffffff8506e9f2
RDX: 000000000000007f RSI: ffffc9000331c000 RDI: ffff8801d86197a0
RBP: ffff8801d16f7c58 R08: 0000000000000000 R09: 1ffff1003a2def0d
R10: 0000000000000003 R11: ffffed003a2def47 R12: ffff8801c39d89c0
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801cf4cfc80
FS:  00007fdf4eb45700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000071c000 CR3: 00000001bd0d7002 CR4: 00000000001606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 sock_sendmsg_nosec net/socket.c:630 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:640
 SYSC_sendto+0x361/0x5c0 net/socket.c:1721
 SyS_sendto+0x40/0x50 net/socket.c:1689
 entry_SYSCALL_64_fastpath+0x29/0xa0
RIP: 0033:0x452f19
RSP: 002b:00007fdf4eb44c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f19
RDX: 0000000000000000 RSI: 0000000020b86000 RDI: 0000000000000013
RBP: 00000000000000fa R08: 0000000020ba9ff0 R09: 0000000000000010
R10: 0000000000004000 R11: 0000000000000212 R12: 00000000006f0810
R13: 00000000ffffffff R14: 00007fdf4eb456d4 R15: 000000000000000f
Code: 15 4a 69 fc 48 8b 7d d0 e8 0c db 54 fd 84 c0 74 0d e8 03 4a 69 fc 48 89 df e8 1b 4c 2b ff 41 bd f7 ff ff ff eb 86 e8 ee 49 69 fc <0f> 0b 41 bd 95 ff ff ff e9 74 ff ff ff e8 7c 4c a1 fc e9 77 fb 
RIP: pppol2tp_sock_to_session net/l2tp/l2tp_ppp.c:176 [inline] RSP: ffff8801d16f7be8
RIP: pppol2tp_sendmsg+0x512/0x670 net/l2tp/l2tp_ppp.c:304 RSP: ffff8801d16f7be8
---[ end trace 7cd98c1968ab9cc8 ]---