[....] Starting enhanced syslogd: rsyslogd[ 13.578338] audit: type=1400 audit(1515711172.300:4): avc: denied { syslog } for pid=3176 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 '10.128.15.206' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 28.157564] ------------[ cut here ]------------ [ 28.162453] WARNING: CPU: 1 PID: 3332 at mm/util.c:522 __vm_enough_memory+0x38b/0x470 [ 28.170422] memory commitment underflow[ 28.174195] Kernel panic - not syncing: panic_on_warn set ... [ 28.174195] [ 28.181537] CPU: 1 PID: 3332 Comm: syzkaller142098 Not tainted 4.9.76-g9154940 #10 [ 28.189208] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.198534] ffff8801c8657a30 ffffffff81d93149 ffffffff83a47180 ffff8801c8657b08 [ 28.206484] ffffffff83aabd00 ffffffff81497abb 0000000000000009 ffff8801c8657af8 [ 28.214436] ffffffff8142e371 0000000041b58ab3 ffffffff84189678 ffffffff8142e1b5 [ 28.222381] Call Trace: [ 28.224940] [] dump_stack+0xc1/0x128 [ 28.230270] [] ? __vm_enough_memory+0x38b/0x470 [ 28.236553] [] panic+0x1bc/0x3a8 [ 28.241541] [] ? percpu_up_read_preempt_enable.constprop.53+0xd7/0xd7 [ 28.249733] [] ? vprintk_emit+0x3ad/0x750 [ 28.255497] [] ? __warn+0x1a9/0x1e0 [ 28.260761] [] ? __vm_enough_memory+0x38b/0x470 [ 28.267048] [] __warn+0x1c4/0x1e0 [ 28.272122] [] warn_slowpath_fmt+0xc4/0x110 [ 28.278057] [] ? __warn+0x1e0/0x1e0 [ 28.283301] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 28.290106] [] ? __vm_enough_memory+0x36c/0x470 [ 28.296398] [] __vm_enough_memory+0x38b/0x470 [ 28.302511] [] security_vm_enough_memory_mm+0x90/0xb0 [ 28.309313] [] mmap_region+0x93b/0xfd0 [ 28.314818] [] ? selinux_mmap_addr+0x1f/0xf0 [ 28.320843] [] do_mmap+0x57b/0xbe0 [ 28.326000] [] vm_mmap_pgoff+0x16b/0x1b0 [ 28.331678] [] ? vma_is_stack_for_current+0xa0/0xa0 [ 28.338311] [] ? rw_verify_area+0xe5/0x2b0 [ 28.344162] [] SyS_mmap_pgoff+0xd0/0x560 [ 28.349841] [] ? find_mergeable_anon_vma+0xd0/0xd0 [ 28.356397] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 28.363201] [] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 28.369745] [] SyS_mmap+0x16/0x20 [ 28.374819] [] entry_SYSCALL_64_fastpath+0x23/0xe2 [ 28.381507] Dumping ftrace buffer: [ 28.385063] (ftrace buffer empty) [ 28.388740] Kernel Offset: disabled [ 28.392356] Rebooting in 86400 seconds..