Warning: Permanently added '10.128.0.21' (ECDSA) to the list of known hosts.
syzkaller login: [   28.872477] IPVS: ftp: loaded support on port[0] = 21
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[   28.901540] IPVS: ftp: loaded support on port[0] = 21
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[   28.948146] IPVS: ftp: loaded support on port[0] = 21
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[   29.001934] IPVS: ftp: loaded support on port[0] = 21
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[   29.065355] IPVS: ftp: loaded support on port[0] = 21
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[   29.175194] IPVS: ftp: loaded support on port[0] = 21
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[   29.207293] kasan: CONFIG_KASAN_INLINE enabled
[   29.221879] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   29.229927] general protection fault: 0000 [#1] PREEMPT SMP KASAN
[   29.236150] Modules linked in:
[   29.239336] CPU: 1 PID: 8186 Comm: syz-executor171 Not tainted 4.14.300-syzkaller #0
[   29.247200] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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[   29.256547] task: ffff8880b1b12340 task.stack: ffff8880b2ed0000
[   29.262604] RIP: 0010:pppol2tp_session_init+0x1ca/0x4d0
[   29.267957] RSP: 0018:ffff8880b2ed7c50 EFLAGS: 00010202
[   29.273306] RAX: dffffc0000000000 RBX: ffff8880b1a34000 RCX: 1ffffffff11995ad
[   29.280551] RDX: 0000000000000045 RSI: ffffffff87cd1180 RDI: 0000000000000228
[   29.287794] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000020011
[   29.295037] R10: ffff8880b1b12bf0 R11: ffff8880b1b12340 R12: 0000000000001ffa
[   29.302282] R13: 0000000000000002 R14: ffff888095784892 R15: ffff8880957848b0
[   29.309523] FS:  00005555571bf300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
[   29.317724] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   29.323581] CR2: 00007ffc7e421048 CR3: 000000009ddb6000 CR4: 00000000003406e0
[   29.330837] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   29.338079] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   29.345326] Call Trace:
[   29.347897]  pppol2tp_connect+0xd5c/0x13d0
[   29.352106]  ? pppol2tp_recv_payload_hook+0x1a0/0x1a0
[   29.357272]  ? lock_acquire+0x170/0x3f0
[   29.361225]  ? lock_downgrade+0x740/0x740
[   29.365347]  ? security_socket_connect+0x83/0xb0
[   29.370076]  ? pppol2tp_recv_payload_hook+0x1a0/0x1a0
[   29.375239]  SyS_connect+0x1f4/0x240
[   29.378928]  ? SyS_accept+0x30/0x30
[   29.382528]  ? up_read+0x17/0x30
[   29.385869]  ? __do_page_fault+0x159/0xad0
[   29.390077]  ? do_syscall_64+0x4c/0x640
[   29.394022]  ? SyS_accept+0x30/0x30
[   29.397624]  do_syscall_64+0x1d5/0x640
[   29.401494]  entry_SYSCALL_64_after_hwframe+0x5e/0xd3
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[   29.406658] Code: fa 80 3d 65 9d 6c 03 00 0f 84 25 02 00 00 e8 1e 94 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 c0 6d bf 
[   29.425716] RIP: pppol2tp_session_init+0x1ca/0x4d0 RSP: ffff8880b2ed7c50
[   29.442725] ---[ end trace 28459f004e63b65c ]---
[   29.447604] Kernel panic - not syncing: Fatal exception
[   29.453142] Kernel Offset: disabled
[   29.456748] Rebooting in 86400 seconds..