[....] Starting enhanced syslogd: rsyslogd[ 12.343249] audit: type=1400 audit(1536388598.517:4): avc: denied { syslog } for pid=1922 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[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.37' (ECDSA) to the list of known hosts. 2018/09/08 06:36:52 parsed 1 programs 2018/09/08 06:36:54 executed programs: 0 syzkaller login: [ 30.189951] ------------[ cut here ]------------ [ 30.194768] WARNING: CPU: 1 PID: 2528 at mm/gup.c:385 __get_user_pages+0xa04/0xea0() [ 30.204045] Kernel panic - not syncing: panic_on_warn set ... [ 30.204045] [ 30.211400] CPU: 1 PID: 2528 Comm: syz-executor0 Not tainted 4.4.154+ #33 [ 30.218298] 0000000000000000 12232fdc1c43de33 ffff8800b44f7830 ffffffff81a54fed [ 30.226299] ffffffff82835440 ffff8801d187df00 ffffffff82892620 0000000000000009 [ 30.234311] 0000000000000181 ffff8800b44f78f0 ffffffff8138a884 0000000041b58ab3 [ 30.242311] Call Trace: [ 30.244876] [] dump_stack+0xc1/0x124 [ 30.250218] [] panic+0x19e/0x359 [ 30.255210] [] ? add_taint.cold.4+0x16/0x16 [ 30.261161] [] ? warn_slowpath_common.cold.6+0x5/0x20 [ 30.268067] [] warn_slowpath_common.cold.6+0x20/0x20 [ 30.274809] [] ? __get_user_pages+0xa04/0xea0 [ 30.280973] [] warn_slowpath_null+0x29/0x30 [ 30.286927] [] __get_user_pages+0xa04/0xea0 [ 30.292876] [] ? follow_page_mask+0x10b0/0x10b0 [ 30.299180] [] get_user_pages+0x8e/0xa0 [ 30.304790] [] __access_remote_vm+0x1e4/0x3c0 [ 30.310923] [] ? do_page_mkwrite+0x350/0x350 [ 30.316956] [] ? get_task_mm+0x20/0xc0 [ 30.322471] [] ? get_task_mm+0x9c/0xc0 [ 30.327986] [] ? _raw_spin_unlock+0x2c/0x50 [ 30.333952] [] access_process_vm+0x58/0x80 [ 30.339817] [] compat_ptrace_request+0x20a/0x430 [ 30.346205] [] ? generic_ptrace_pokedata+0xc0/0xc0 [ 30.352760] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 30.359508] [] ? check_preemption_disabled+0x3b/0x170 [ 30.366326] [] ? _raw_spin_unlock_irqrestore+0x5a/0x70 [ 30.373229] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 30.380048] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 30.386954] [] ? wait_task_inactive+0x34c/0x870 [ 30.393248] [] ? bit_wait_timeout+0x160/0x160 [ 30.399370] [] ? migrate_swap+0x590/0x590 [ 30.405161] [] compat_arch_ptrace+0x443/0x620 [ 30.411283] [] ? arch_ptrace+0x990/0x990 [ 30.416970] [] compat_SyS_ptrace+0x114/0x140 [ 30.423004] [] ? compat_ptrace_request+0x430/0x430 [ 30.429582] [] do_fast_syscall_32+0x31e/0x8b0 [ 30.435706] [] sysenter_flags_fixed+0xd/0x1a [ 30.442086] Dumping ftrace buffer: [ 30.445692] (ftrace buffer empty) [ 30.449379] Kernel Offset: disabled [ 30.453021] Rebooting in 86400 seconds..