[....] Starting enhanced syslogd: rsyslogd[ 11.081765] audit: type=1400 audit(1514788432.861:4): avc: denied { syslog } for pid=3174 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 '10.128.0.27' (ECDSA) to the list of known hosts. 2018/01/01 06:34:07 parsed 1 programs 2018/01/01 06:34:07 executed programs: 0 syzkaller login: [ 25.346884] audit: type=1400 audit(1514788447.121:5): avc: denied { sys_admin } for pid=3336 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 [ 25.368273] IPVS: Creating netns size=2536 id=1 [ 25.389434] IPVS: Creating netns size=2536 id=2 [ 25.400288] IPVS: Creating netns size=2536 id=3 [ 25.405870] audit: type=1400 audit(1514788447.181:6): avc: denied { sys_chroot } for pid=3339 comm="syz-executor0" 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 [ 25.433469] ------------[ cut here ]------------ [ 25.434097] Option ' [ 25.438024] Option ' [ 25.441836] Option ' [ 25.445409] Option ' [ 25.448982] Option ' [ 25.451276] Option ' [ 25.453798] Option ' [ 25.456280] Option ' [ 25.458815] Option ' [ 26.225316] WARNING: CPU: 1 PID: 3363 at lib/vsprintf.c:1941 set_precision+0x144/0x170 [ 26.233340] precision 65562 too large[ 26.236941] Kernel panic - not syncing: panic_on_warn set ... [ 26.236941] [ 26.244282] CPU: 1 PID: 3363 Comm: syz-executor0 Not tainted 4.9.73-gf3f3457 #1 [ 26.251692] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.261013] ffff8801c879f728 ffffffff81d922b9 ffffffff83a46d00 ffff8801c879f800 [ 26.268980] ffffffff83c0f800 ffffffff81db35b4 0000000000000009 ffff8801c879f7f0 [ 26.276936] ffffffff8142d741 0000000041b58ab3 ffffffff84189000 ffffffff8142d585 [ 26.284887] Call Trace: [ 26.287442] [] dump_stack+0xc1/0x128 [ 26.292788] [] ? set_precision+0x144/0x170 [ 26.298648] [] panic+0x1bc/0x3a8 [ 26.303635] [] ? percpu_up_read_preempt_enable.constprop.53+0xd7/0xd7 [ 26.311832] [] ? vprintk_emit+0x3ad/0x750 [ 26.317609] [] ? __warn+0x1a9/0x1e0 [ 26.322853] [] ? set_precision+0x144/0x170 [ 26.328710] [] __warn+0x1c4/0x1e0 [ 26.333780] [] warn_slowpath_fmt+0xc4/0x110 [ 26.339729] [] ? __warn+0x1e0/0x1e0 [ 26.344974] [] ? avc_has_perm+0x378/0x4f0 [ 26.350738] [] ? noop_count+0x40/0x40 [ 26.356165] [] ? check_usage_backwards+0x171/0x300 [ 26.362712] [] set_precision+0x144/0x170 [ 26.368396] [] vsnprintf+0x8ae/0x16d0 [ 26.373820] [] ? pointer+0xa90/0xa90 [ 26.379162] [] ? mark_lock+0x99b/0xfd0 [ 26.384671] [] vscnprintf+0x2d/0x60 [ 26.389916] [] vprintk_emit+0xf1/0x750 [ 26.395418] [] vprintk+0x28/0x30 [ 26.400405] [] vprintk_default+0x1d/0x30 [ 26.406102] [] printk+0xb7/0xe2 [ 26.411002] [] ? load_image_and_restore+0xf9/0xf9 [ 26.417461] [] dns_resolver_preparse+0x743/0x810 [ 26.423833] [] ? dns_resolver_free_preparse+0x40/0x40 [ 26.430639] [] ? dns_resolver_free_preparse+0x40/0x40 [ 26.437446] [] key_create_or_update+0x35e/0xa60 [ 26.443738] [] ? key_type_lookup+0xd0/0xd0 [ 26.449589] [] ? lookup_user_key+0x113/0xd10 [ 26.455617] [] ? __check_object_size+0x174/0x3a9 [ 26.461986] [] ? 0xffffffff810002b8 [ 26.467229] [] SyS_add_key+0x1b1/0x390 [ 26.472732] [] ? key_get_type_from_user.constprop.10+0xe0/0xe0 [ 26.480320] [] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 26.486868] [] entry_SYSCALL_64_fastpath+0x23/0xc6 [ 26.493457] Dumping ftrace buffer: [ 26.496965] (ftrace buffer empty) [ 26.500639] Kernel Offset: disabled [ 26.504230] Rebooting in 86400 seconds..