kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000)
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 10003 Comm: syz-executor.2 Not tainted 4.14.305-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
task: ffff88808c50e380 task.stack: ffff88808def0000
RIP: 0010:__read_once_size include/linux/compiler.h:185 [inline]
RIP: 0010:sk_dst_get include/net/sock.h:1772 [inline]
RIP: 0010:pppol2tp_session_init+0x1ca/0x4d0 net/l2tp/l2tp_ppp.c:607
RSP: 0018:ffff88808def7c50 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff88809fd55240 RCX: 1ffffffff11999ac
dccp_close: ABORT with 3 bytes unread
RDX: 0000000000000045 RSI: ffffffff87cd1740 RDI: 0000000000000228
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000020011
R10: ffff88808c50ec30 R11: ffff88808c50e380 R12: 0000000000002713
R13: 0000000000000002 R14: ffff88809e260212 R15: ffff88809e260230
FS: 00007ff90454f700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9c76a8b718 CR3: 000000009e9b6000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
pppol2tp_connect+0xd5c/0x13d0 net/l2tp/l2tp_ppp.c:781
SYSC_connect net/socket.c:1655 [inline]
SyS_connect+0x1f4/0x240 net/socket.c:1636
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7ff905fdd0f9
RSP: 002b:00007ff90454f168 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 00007ff9060fcf80 RCX: 00007ff905fdd0f9
RDX: 000000000000002e RSI: 0000000020000000 RDI: 0000000000000007
RBP: 00007ff906038ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffe857109f R14: 00007ff90454f300 R15: 0000000000022000
Code: fa 80 3d 16 77 6c 03 00 0f 84 25 02 00 00 e8 3e 5e ce fa 48 8d bd 28 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 db 02 00 00 48 8b ad 28 02 00 00 e8 40 3b bf
RIP: __read_once_size include/linux/compiler.h:185 [inline] RSP: ffff88808def7c50
RIP: sk_dst_get include/net/sock.h:1772 [inline] RSP: ffff88808def7c50
RIP: pppol2tp_session_init+0x1ca/0x4d0 net/l2tp/l2tp_ppp.c:607 RSP: ffff88808def7c50
======================================================
WARNING: the mand mount option is being deprecated and
will be removed in v5.15!
======================================================
---[ end trace 568af3bc02636d75 ]---
----------------
Code disassembly (best guess):
0: fa cli
1: 80 3d 16 77 6c 03 00 cmpb $0x0,0x36c7716(%rip) # 0x36c771e
8: 0f 84 25 02 00 00 je 0x233
e: e8 3e 5e ce fa callq 0xface5e51
13: 48 8d bd 28 02 00 00 lea 0x228(%rbp),%rdi
1a: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
21: fc ff df
24: 48 89 fa mov %rdi,%rdx
27: 48 c1 ea 03 shr $0x3,%rdx
* 2b: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction
2f: 0f 85 db 02 00 00 jne 0x310
35: 48 8b ad 28 02 00 00 mov 0x228(%rbp),%rbp
3c: e8 .byte 0xe8
3d: 40 rex
3e: 3b .byte 0x3b
3f: bf .byte 0xbf