[....] Starting enhanced syslogd: rsyslogd[ 12.251747] audit: type=1400 audit(1514891500.488:4): avc: denied { syslog } for pid=3158 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 '10.128.15.231' (ECDSA) to the list of known hosts. 2018/01/02 11:11:52 parsed 1 programs 2018/01/02 11:11:52 executed programs: 0 syzkaller login: [ 23.796209] audit: type=1400 audit(1514891512.028:5): avc: denied { sys_admin } for pid=3323 comm="syz-executor0" capability=21 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 [ 23.823928] IPVS: Creating netns size=2536 id=1 [ 23.856427] IPVS: Creating netns size=2536 id=2 [ 23.861670] audit: type=1400 audit(1514891512.108:6): avc: denied { sys_chroot } for pid=3326 comm="syz-executor1" capability=18 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 [ 23.888839] ------------[ cut here ]------------ [ 23.893591] WARNING: CPU: 1 PID: 3348 at lib/vsprintf.c:1941 set_precision+0x144/0x170 [ 23.901613] precision 65177 too large[ 23.902183] Option ' [ 23.905766] Option ' [ 23.909681] Option ' [ 23.913077] Option ' [ 23.917273] Option ' [ 24.342397] Kernel panic - not syncing: panic_on_warn set ... [ 24.342397] [ 24.349744] CPU: 1 PID: 3348 Comm: syz-executor1 Not tainted 4.9.73-gf3f3457 #1 [ 24.357154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.366472] ffff8801c8087728 ffffffff81d922b9 ffffffff83a46d00 ffff8801c8087800 [ 24.374421] ffffffff83c0f800 ffffffff81db35b4 0000000000000009 ffff8801c80877f0 [ 24.382375] ffffffff8142d741 0000000041b58ab3 ffffffff84189000 ffffffff8142d585 [ 24.390325] Call Trace: [ 24.392882] [] dump_stack+0xc1/0x128 [ 24.398212] [] ? set_precision+0x144/0x170 [ 24.404065] [] panic+0x1bc/0x3a8 [ 24.409049] [] ? percpu_up_read_preempt_enable.constprop.53+0xd7/0xd7 [ 24.417241] [] ? vprintk_emit+0x3ad/0x750 [ 24.423004] [] ? __warn+0x1a9/0x1e0 [ 24.428247] [] ? set_precision+0x144/0x170 [ 24.434099] [] __warn+0x1c4/0x1e0 [ 24.439167] [] warn_slowpath_fmt+0xc4/0x110 [ 24.445105] [] ? __warn+0x1e0/0x1e0 [ 24.450346] [] ? avc_has_perm+0x378/0x4f0 [ 24.456109] [] ? noop_count+0x40/0x40 [ 24.461523] [] ? check_usage_backwards+0x171/0x300 [ 24.468069] [] set_precision+0x144/0x170 [ 24.474207] [] vsnprintf+0x8ae/0x16d0 [ 24.479624] [] ? pointer+0xa90/0xa90 [ 24.484953] [] ? mark_lock+0x99b/0xfd0 [ 24.490453] [] vscnprintf+0x2d/0x60 [ 24.495694] [] vprintk_emit+0xf1/0x750 [ 24.501197] [] vprintk+0x28/0x30 [ 24.506178] [] vprintk_default+0x1d/0x30 [ 24.511853] [] printk+0xb7/0xe2 [ 24.516746] [] ? load_image_and_restore+0xf9/0xf9 [ 24.523205] [] dns_resolver_preparse+0x743/0x810 [ 24.529586] [] ? dns_resolver_free_preparse+0x40/0x40 [ 24.536390] [] ? dns_resolver_free_preparse+0x40/0x40 [ 24.543193] [] key_create_or_update+0x35e/0xa60 [ 24.549475] [] ? key_type_lookup+0xd0/0xd0 [ 24.555326] [] ? lookup_user_key+0x113/0xd10 [ 24.561348] [] ? __check_object_size+0x174/0x3a9 [ 24.567714] [] ? 0xffffffff810002b8 [ 24.572957] [] SyS_add_key+0x1b1/0x390 [ 24.578459] [] ? key_get_type_from_user.constprop.10+0xe0/0xe0 [ 24.586042] [] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 24.592586] [] entry_SYSCALL_64_fastpath+0x23/0xc6 [ 24.599527] Dumping ftrace buffer: [ 24.603034] (ftrace buffer empty) [ 24.606707] Kernel Offset: disabled [ 24.610297] Rebooting in 86400 seconds..