[....] Starting enhanced syslogd: rsyslogd[ 13.000767] audit: type=1400 audit(1536386839.099:4): avc: denied { syslog } for pid=1921 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 mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] 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 '10.128.15.194' (ECDSA) to the list of known hosts. 2018/09/08 06:07:30 parsed 1 programs 2018/09/08 06:07:33 executed programs: 0 2018/09/08 06:07:38 executed programs: 210 syzkaller login: [ 36.903529] ------------[ cut here ]------------ [ 36.909146] WARNING: CPU: 1 PID: 4599 at mm/gup.c:385 __get_user_pages+0xa04/0xea0() [ 36.917132] Kernel panic - not syncing: panic_on_warn set ... [ 36.917132] [ 36.924488] CPU: 1 PID: 4599 Comm: syz-executor0 Not tainted 4.4.154+ #33 [ 36.931400] 0000000000000000 05d369c53d090b80 ffff8800b387f830 ffffffff81a54fed [ 36.939439] ffffffff82835440 ffff8801d0972f80 ffffffff82892620 0000000000000009 [ 36.947483] 0000000000000181 ffff8800b387f8f0 ffffffff8138a884 0000000041b58ab3 [ 36.955519] Call Trace: [ 36.958093] [] dump_stack+0xc1/0x124 [ 36.963439] [] panic+0x19e/0x359 [ 36.968451] [] ? add_taint.cold.4+0x16/0x16 [ 36.974409] [] ? warn_slowpath_common.cold.6+0x5/0x20 [ 36.981238] [] warn_slowpath_common.cold.6+0x20/0x20 [ 36.987972] [] ? __get_user_pages+0xa04/0xea0 [ 36.994103] [] warn_slowpath_null+0x29/0x30 [ 37.000050] [] __get_user_pages+0xa04/0xea0 [ 37.006004] [] ? follow_page_mask+0x10b0/0x10b0 [ 37.012309] [] get_user_pages+0x8e/0xa0 [ 37.017913] [] __access_remote_vm+0x1e4/0x3c0 [ 37.024040] [] ? do_page_mkwrite+0x350/0x350 [ 37.030076] [] ? get_task_mm+0x20/0xc0 [ 37.035597] [] ? get_task_mm+0x9c/0xc0 [ 37.041120] [] ? _raw_spin_unlock+0x2c/0x50 [ 37.047078] [] access_process_vm+0x58/0x80 [ 37.052951] [] compat_ptrace_request+0x20a/0x430 [ 37.059680] [] ? generic_ptrace_pokedata+0xc0/0xc0 [ 37.066241] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 37.072972] [] ? check_preemption_disabled+0x3b/0x170 [ 37.079797] [] ? _raw_spin_unlock_irqrestore+0x5a/0x70 [ 37.086717] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 37.093549] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 37.100453] [] ? wait_task_inactive+0x34c/0x870 [ 37.106756] [] ? migrate_swap+0x590/0x590 [ 37.112532] [] compat_arch_ptrace+0x443/0x620 [ 37.118665] [] ? arch_ptrace+0x990/0x990 [ 37.124359] [] compat_SyS_ptrace+0x114/0x140 [ 37.130402] [] ? compat_ptrace_request+0x430/0x430 [ 37.136969] [] do_fast_syscall_32+0x31e/0x8b0 [ 37.143097] [] sysenter_flags_fixed+0xd/0x1a [ 37.149470] Dumping ftrace buffer: [ 37.153073] (ftrace buffer empty) [ 37.156758] Kernel Offset: disabled [ 37.160399] Rebooting in 86400 seconds..