Warning: Permanently added '10.128.0.71' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [ 45.453534][ T6778] IPVS: ftp: loaded support on port[0] = 21
[ 45.580549][ C1] ------------[ cut here ]------------
[ 45.586085][ C1] kernel BUG at net/l2tp/l2tp_core.c:1572!
[ 45.592273][ C1] invalid opcode: 0000 [#1] PREEMPT SMP KASAN
[ 45.598386][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-syzkaller #0
[ 45.605907][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 45.615995][ C1] RIP: 0010:l2tp_session_free+0x1ee/0x1f0
[ 45.621684][ C1] Code: 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c b8 fe ff ff 4c 89 e7 e8 03 64 37 fa e9 ab fe ff ff e8 d9 7f f8 f9 0f 0b e8 d2 7f f8 f9 <0f> 0b 55 41 57 41 56 41 55 41 54 53 49 89 fe 48 bd 00 00 00 00 00
[ 45.641261][ C1] RSP: 0018:ffffc90000da8da8 EFLAGS: 00010246
[ 45.647342][ C1] RAX: ffffffff877c235e RBX: 0000000000000000 RCX: ffff8880a99f4340
[ 45.655290][ C1] RDX: 0000000080000101 RSI: 0000000000000000 RDI: 0000000042114dda
[ 45.663280][ C1] RBP: ffff8880a7958238 R08: ffffffff877c220d R09: ffffed1014f2b01a
[ 45.671221][ C1] R10: ffffed1014f2b01a R11: 0000000000000000 R12: ffff8880a6f77800
[ 45.679164][ C1] R13: dffffc0000000000 R14: ffff8880a7958000 R15: dffffc0000000000
[ 45.687109][ C1] FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
[ 45.696007][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 45.702580][ C1] CR2: 000000000049f410 CR3: 0000000009279000 CR4: 00000000001406e0
[ 45.710573][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 45.718556][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 45.726784][ C1] Call Trace:
[ 45.730064][ C1]
[ 45.732904][ C1] ? pppol2tp_backlog_recv+0x50/0x50
[ 45.738173][ C1] __sk_destruct+0x50/0x740
[ 45.742652][ C1] ? pppol2tp_recvmsg+0x2e0/0x2e0
[ 45.747648][ C1] rcu_core+0x90c/0x1200
[ 45.751872][ C1] __do_softirq+0x268/0x80c
[ 45.756348][ C1] ? irq_exit+0x223/0x230
[ 45.760650][ C1] irq_exit+0x223/0x230
[ 45.764778][ C1] smp_apic_timer_interrupt+0x113/0x280
[ 45.770297][ C1] apic_timer_interrupt+0xf/0x20
[ 45.775203][ C1]
[ 45.778149][ C1] RIP: 0010:native_safe_halt+0xe/0x10
[ 45.783509][ C1] Code: 80 e1 07 80 c1 03 38 c1 7c bc 48 89 df e8 9a 17 9b f9 eb b2 cc cc cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d 56 46 4a 00 fb f4 90 e9 07 00 00 00 0f 00 2d 46 46 4a 00 f4 c3 cc cc 41 56 53 65
[ 45.803085][ C1] RSP: 0018:ffffc90000d3fd60 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 45.811481][ C1] RAX: 1ffffffff12577b9 RBX: 0000000000000000 RCX: ffffffffffffffff
[ 45.819441][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880a99f4ba4
[ 45.827399][ C1] RBP: 1ffff1104351244e R08: ffffffff817a4660 R09: ffffed101533e869
[ 45.835344][ C1] R10: ffffed101533e869 R11: 0000000000000000 R12: 0000000000000001
[ 45.843293][ C1] R13: dffffc0000000000 R14: dffffc0000000000 R15: ffff88821a892270
[ 45.851246][ C1] ? trace_hardirqs_on+0x30/0x80
[ 45.856181][ C1] acpi_safe_halt+0x87/0xe0
[ 45.860656][ C1] acpi_idle_enter+0x3f4/0xac0
[ 45.865392][ C1] cpuidle_enter_state+0x2d7/0x7b0
[ 45.870476][ C1] cpuidle_enter+0x59/0x90
[ 45.874882][ C1] do_idle+0x49c/0x650
[ 45.878939][ C1] cpu_startup_entry+0x15/0x20
[ 45.883694][ C1] start_secondary+0x213/0x240
[ 45.888436][ C1] secondary_startup_64+0xa4/0xb0
[ 45.893430][ C1] Modules linked in:
[ 45.897376][ C1] ---[ end trace 1d65b89c4fe927df ]---
[ 45.902873][ C1] RIP: 0010:l2tp_session_free+0x1ee/0x1f0
[ 45.908578][ C1] Code: 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c b8 fe ff ff 4c 89 e7 e8 03 64 37 fa e9 ab fe ff ff e8 d9 7f f8 f9 0f 0b e8 d2 7f f8 f9 <0f> 0b 55 41 57 41 56 41 55 41 54 53 49 89 fe 48 bd 00 00 00 00 00
[ 45.928194][ C1] RSP: 0018:ffffc90000da8da8 EFLAGS: 00010246
[ 45.934280][ C1] RAX: ffffffff877c235e RBX: 0000000000000000 RCX: ffff8880a99f4340
[ 45.942308][ C1] RDX: 0000000080000101 RSI: 0000000000000000 RDI: 0000000042114dda
[ 45.950410][ C1] RBP: ffff8880a7958238 R08: ffffffff877c220d R09: ffffed1014f2b01a
[ 45.958398][ C1] R10: ffffed1014f2b01a R11: 0000000000000000 R12: ffff8880a6f77800
[ 45.966406][ C1] R13: dffffc0000000000 R14: ffff8880a7958000 R15: dffffc0000000000
[ 45.974433][ C1] FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
[ 45.983404][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 45.990042][ C1] CR2: 000000000049f410 CR3: 0000000009279000 CR4: 00000000001406e0
[ 45.998018][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 46.006007][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 46.013996][ C1] Kernel panic - not syncing: Fatal exception in interrupt
[ 46.022319][ C1] Kernel Offset: disabled
[ 46.026632][ C1] Rebooting in 86400 seconds..