Starting OpenBSD Secure Shell server...
[  OK  ] Started Daily apt upgrade and clean activities.
         Starting System Logging Service...
         Starting Permit User Sessions...
[  OK  ] Started Daily Cleanup of Temporary Directories.
[  OK  ] Reached target Timers.
[  OK  ] Started System Logging Service.
[  OK  ] Started Permit User Sessions.
[  OK  ] Started OpenBSD Secure Shell server.
[  OK  ] Started getty on tty2-tty6 if dbus and logind are not available.
[  OK  ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch.
[  OK  ] Started Getty on tty6.
[  OK  ] Started Getty on tty5.
[  OK  ] Started Getty on tty4.
[  OK  ] Started Getty on tty3.
[  OK  ] Started Getty on tty1.
[  OK  ] Started Serial Getty on ttyS0.
[  OK  ] Started Getty on tty2.
[  OK  ] Reached target Login Prompts.
[  OK  ] Reached target Multi-User System.
[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
         Starting Load/Save RF Kill Switch Status...
[  OK  ] Started Update UTMP about System Runlevel Changes.
[  OK  ] Started Load/Save RF Kill Switch Status.


Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.116' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   64.537749][   T27] audit: type=1400 audit(1594181680.524:8): avc:  denied  { execmem } for  pid=6826 comm="syz-executor479" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
[   64.695592][    T0] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
[   64.695602][    T0] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
[   64.695615][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.8.0-rc3-syzkaller #0
[   64.695622][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   64.695643][    T0] RIP: 0010:__switch_to_asm+0x0/0x40
[   64.695656][    T0] Code: 00 00 00 00 00 00 00 00 00 00 48 c7 84 c4 48 01 00 00 00 00 00 00 8b 44 24 3c 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   64.695663][    T0] RSP: 0018:ffffc90000d3fd00 EFLAGS: 00010046
[   64.695673][    T0] RAX: dffffc0000000000 RBX: ffff8880ae735e18 RCX: 0000000000000000
[   64.695681][    T0] RDX: 1ffff11015ce6bc2 RSI: ffff88808ad92180 RDI: ffff8880a9638340
[   64.695689][    T0] RBP: ffffc90000d3fdd0 R08: 0000000000000001 R09: ffff8880a9638c08
[   64.695697][    T0] R10: fffffbfff155cb29 R11: 0000000000000000 R12: ffff8880ae735e00
[   64.695705][    T0] R13: ffff8880a9638340 R14: ffff88808ad92180 R15: ffff8880a9638770
[   64.695716][    T0] FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
[   64.695724][    T0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   64.695731][    T0] CR2: 00000000006cb090 CR3: 00000000a6596000 CR4: 00000000001406e0
[   64.695742][    T0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   64.695750][    T0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   64.695754][    T0] Call Trace:
[   64.695770][    T0]  __schedule+0x8e1/0x1eb0
[   64.695787][    T0]  ? io_schedule_timeout+0x140/0x140
[   64.695801][    T0]  ? lockdep_hardirqs_on_prepare+0x3a2/0x590
[   64.695814][    T0]  ? trace_hardirqs_on+0x5f/0x220
[   64.695828][    T0]  ? lockdep_hardirqs_on+0x6a/0xe0
[   64.695842][    T0]  schedule_idle+0x53/0x90
[   64.695856][    T0]  do_idle+0x323/0x6d0
[   64.695870][    T0]  ? arch_cpu_idle_exit+0x70/0x70
[   64.695883][    T0]  ? do_idle+0x358/0x6d0
[   64.695898][    T0]  cpu_startup_entry+0x14/0x20
[   64.695912][    T0]  start_secondary+0x2b3/0x370
[   64.695925][    T0]  ? set_cpu_sibling_map+0x1e80/0x1e80
[   64.695942][    T0]  secondary_startup_64+0xa4/0xb0
[   64.695951][    T0] Modules linked in:
[   64.695969][    T0] ---[ end trace a36c13ed0b338871 ]---
[   64.695983][    T0] RIP: 0010:__switch_to_asm+0x0/0x40
[   64.695994][    T0] Code: 00 00 00 00 00 00 00 00 00 00 48 c7 84 c4 48 01 00 00 00 00 00 00 8b 44 24 3c 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   64.696001][    T0] RSP: 0018:ffffc90000d3fd00 EFLAGS: 00010046
[   64.696022][    T0] RAX: dffffc0000000000 RBX: ffff8880ae735e18 RCX: 0000000000000000
[   64.696030][    T0] RDX: 1ffff11015ce6bc2 RSI: ffff88808ad92180 RDI: ffff8880a9638340
[   64.696038][    T0] RBP: ffffc90000d3fdd0 R08: 0000000000000001 R09: ffff8880a9638c08
[   64.696045][    T0] R10: fffffbfff155cb29 R11: 0000000000000000 R12: ffff8880ae735e00
[   64.696053][    T0] R13: ffff8880a9638340 R14: ffff88808ad92180 R15: ffff8880a9638770
[   64.696064][    T0] FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
[   64.696072][    T0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   64.696080][    T0] CR2: 00000000006cb090 CR3: 00000000a6596000 CR4: 00000000001406e0
[   64.696097][    T0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   64.696105][    T0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   64.696111][    T0] Kernel panic - not syncing: Fatal exception
[   64.696984][    T0] Kernel Offset: disabled
[   65.040976][    T0] Rebooting in 86400 seconds..