Starting Permit User Sessions...
[  OK  ] Started Daily apt download activities.
[  OK  ] Started Daily apt upgrade and clean activities.
[  OK  ] Reached target Timers.
[   46.513427][ T6535] sshd (6535) used greatest stack depth: 23248 bytes left
[  OK  ] Started System Logging Service.
[  OK  ] Started Permit User Sessions.
[  OK  ] Found device /dev/ttyS0.
[  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 tty2.
[  OK  ] Started Getty on tty1.
[  OK  ] Started Serial Getty on ttyS0.
[  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 '10.128.10.13' (ECDSA) to the list of known hosts.
2020/09/27 21:17:43 fuzzer started
2020/09/27 21:17:43 dialing manager at 10.128.0.26:36169
2020/09/27 21:17:44 syscalls: 3374
2020/09/27 21:17:44 code coverage: enabled
2020/09/27 21:17:44 comparison tracing: enabled
2020/09/27 21:17:44 extra coverage: enabled
2020/09/27 21:17:44 setuid sandbox: enabled
2020/09/27 21:17:44 namespace sandbox: enabled
2020/09/27 21:17:44 Android sandbox: enabled
2020/09/27 21:17:44 fault injection: enabled
2020/09/27 21:17:44 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/09/27 21:17:44 net packet injection: enabled
2020/09/27 21:17:44 net device setup: enabled
2020/09/27 21:17:44 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist
2020/09/27 21:17:44 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/09/27 21:17:44 USB emulation: enabled
2020/09/27 21:17:44 hci packet injection: enabled
2020/09/27 21:17:44 wifi device emulation: enabled
syzkaller login: [  199.920898][    C0] WARNING: can't access registers at asm_sysvec_call_function_single+0x12/0x20