[....] Starting enhanced syslogd: rsyslogd[ 15.809823] audit: type=1400 audit(1553692082.696:4): avc: denied { syslog } for pid=1939 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 '10.128.0.242' (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 syzkaller login: [ 39.829967] ------------[ cut here ]------------ [ 39.834920] WARNING: CPU: 1 PID: 2157 at ./arch/x86/include/asm/thread_info.h:273 sigsuspend+0x18d/0x1f0() executing program [ 39.895044] Kernel panic - not syncing: panic_on_warn set ... [ 39.895044] [ 39.902637] CPU: 1 PID: 2157 Comm: syz-executor726 Not tainted 4.4.174+ #17 [ 39.909743] 0000000000000000 e009200272b078b2 ffff8801d4ae7ce8 ffffffff81aad1a1 [ 39.917792] 0000000000000000 ffffffff82835ee0 ffffffff8283c0e0 0000000000000111 [ 39.925850] ffffffff811027fd ffff8801d4ae7dc8 ffffffff813a48c2 0000000041b58ab3 [ 39.934000] Call Trace: [ 39.936585] [] dump_stack+0xc1/0x120 [ 39.941952] [] ? sigsuspend+0x18d/0x1f0 [ 39.947582] [] panic+0x1b9/0x37b [ 39.952601] [] ? add_taint.cold+0x16/0x16 [ 39.958413] [] ? __schedule+0x7a3/0x1ee0 [ 39.964133] [] ? __schedule+0x7e3/0x1ee0 [ 39.969855] [] ? warn_slowpath_common.cold+0x5/0x20 [ 39.976534] [] warn_slowpath_common.cold+0x20/0x20 [ 39.976567] ------------[ cut here ]------------ [ 39.976581] WARNING: CPU: 0 PID: 2165 at ./arch/x86/include/asm/thread_info.h:273 sigsuspend+0x18d/0x1f0() [ 39.976585] Modules linked in: [ 40.001012] [] warn_slowpath_null+0x2a/0x30 [ 40.007173] [] sigsuspend+0x18d/0x1f0 [ 40.012634] [] SyS_rt_sigsuspend+0xa1/0xf0 [ 40.018582] [] ? sys_pause+0x180/0x180 [ 40.024134] [] ? do_fast_syscall_32+0xd6/0xa90 [ 40.030426] [] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 40.037354] [] ? sys_pause+0x180/0x180 [ 40.042908] [] do_fast_syscall_32+0x32d/0xa90 [ 40.049117] [] sysenter_flags_fixed+0xd/0x1a [ 40.055485] Kernel Offset: disabled [ 40.059223] Rebooting in 86400 seconds..