[....] Starting enhanced syslogd: rsyslogd[   17.012136] audit: type=1400 audit(1553690901.987:4): avc:  denied  { syslog } for  pid=1933 comm="rsyslogd" capability=34  scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1
[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
Starting mcstransd: 
[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added '10.128.0.22' (ECDSA) to the list of known hosts.
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
syzkaller login: [   48.094676] ------------[ cut here ]------------
[   48.099495] WARNING: CPU: 0 PID: 2273 at ./arch/x86/include/asm/thread_info.h:273 sigsuspend+0x18d/0x1f0()
[   48.112493] Kernel panic - not syncing: panic_on_warn set ...
[   48.112493] 
[   48.119883] CPU: 0 PID: 2273 Comm: syz-executor923 Not tainted 4.4.174+ #4
[   48.128619]  0000000000000000 368e7cdbe52a363d ffff8800b2bafd60 ffffffff81aad1a1
[   48.136720]  0000000000000000 ffffffff82835ee0 ffffffff8283c0e0 0000000000000111
[   48.144971]  ffffffff811027fd ffff8800b2bafe40 ffffffff813a48c2 0000000041b58ab3
[   48.153134] Call Trace:
[   48.155724]  [<ffffffff81aad1a1>] dump_stack+0xc1/0x120
[   48.161088]  [<ffffffff811027fd>] ? sigsuspend+0x18d/0x1f0
[   48.166713]  [<ffffffff813a48c2>] panic+0x1b9/0x37b
[   48.171903]  [<ffffffff813a4709>] ? add_taint.cold+0x16/0x16
[   48.177786]  [<ffffffff827081f3>] ? __schedule+0x7a3/0x1ee0
[   48.183501]  [<ffffffff82708233>] ? __schedule+0x7e3/0x1ee0
[   48.189233]  [<ffffffff813a4a9e>] ? warn_slowpath_common.cold+0x5/0x20
[   48.195901]  [<ffffffff813a4ab9>] warn_slowpath_common.cold+0x20/0x20
[   48.202566]  [<ffffffff810d3aaa>] warn_slowpath_null+0x2a/0x30
[   48.208540]  [<ffffffff811027fd>] sigsuspend+0x18d/0x1f0
[   48.213986]  [<ffffffff81106d91>] SyS_rt_sigsuspend+0xa1/0xf0
[   48.219867]  [<ffffffff81106cf0>] ? sys_pause+0x180/0x180
[   48.225400]  [<ffffffff810021a4>] ? lockdep_sys_exit_thunk+0x12/0x14
[   48.231895]  [<ffffffff82718ba1>] entry_SYSCALL_64_fastpath+0x1e/0x9a
[   48.239258] Kernel Offset: disabled
[   48.242969] Rebooting in 86400 seconds..