[....] Starting enhanced syslogd: rsyslogd[ 12.491257] audit: type=1400 audit(1516306193.258:4): avc: denied { syslog } for pid=3180 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 '10.128.0.53' (ECDSA) to the list of known hosts. 2018/01/18 20:10:05 parsed 1 programs 2018/01/18 20:10:05 executed programs: 0 syzkaller login: [ 25.189688] IPVS: Creating netns size=2536 id=1 [ 25.199519] audit: type=1400 audit(1516306205.968:5): avc: denied { sys_admin } for pid=3342 comm="syz-executor3" 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 [ 25.234414] IPVS: Creating netns size=2536 id=2 [ 25.255951] IPVS: Creating netns size=2536 id=3 [ 25.261074] audit: type=1400 audit(1516306206.028:6): avc: denied { sys_chroot } for pid=3356 comm="syz-executor3" 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 [ 25.288063] ------------[ cut here ]------------ [ 25.290999] Option ' [ 25.294458] Option ' [ 25.298199] Option ' [ 25.300837] Option ' [ 25.303413] Option ' [ 25.306371] Option ' [ 25.309355] Option ' [ 25.312422] Option ' [ 25.315039] Option ' [ 26.081804] WARNING: CPU: 1 PID: 3364 at lib/vsprintf.c:1941 set_precision+0x144/0x170 [ 26.089827] precision 63950 too large[ 26.093423] Kernel panic - not syncing: panic_on_warn set ... [ 26.093423] [ 26.100771] CPU: 1 PID: 3364 Comm: syz-executor3 Not tainted 4.9.77-g8788313 #25 [ 26.108273] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.117599] ffff8801c816f6c0 ffffffff81d941c9 ffffffff83a47bc0 ffff8801c816f798 [ 26.125581] ffffffff83c10600 ffffffff81db54c4 0000000000000009 ffff8801c816f788 [ 26.133553] ffffffff8142f3c1 0000000041b58ab3 ffffffff8418ab70 ffffffff8142f205 [ 26.141520] Call Trace: [ 26.144080] [] dump_stack+0xc1/0x128 [ 26.149413] [] ? set_precision+0x144/0x170 [ 26.155284] [] panic+0x1bc/0x3a8 [ 26.160273] [] ? percpu_up_read_preempt_enable.constprop.53+0xd7/0xd7 [ 26.168469] [] ? vprintk_emit+0x3ad/0x750 [ 26.174237] [] ? __warn+0x1a9/0x1e0 [ 26.179484] [] ? set_precision+0x144/0x170 [ 26.185336] [] __warn+0x1c4/0x1e0 [ 26.190411] [] warn_slowpath_fmt+0xc4/0x110 [ 26.196351] [] ? __warn+0x1e0/0x1e0 [ 26.201599] [] ? avc_has_perm+0x378/0x4f0 [ 26.207367] [] set_precision+0x144/0x170 [ 26.213056] [] vsnprintf+0x8ae/0x16d0 [ 26.218476] [] ? pointer+0xa90/0xa90 [ 26.223813] [] ? mark_lock+0x99b/0xfd0 [ 26.229323] [] ? print_shortest_lock_dependencies+0x350/0x350 [ 26.236825] [] vscnprintf+0x2d/0x60 [ 26.242070] [] vprintk_emit+0xf1/0x750 [ 26.247575] [] vprintk+0x28/0x30 [ 26.252559] [] vprintk_default+0x1d/0x30 [ 26.258239] [] printk+0xb7/0xe2 [ 26.263142] [] ? load_image_and_restore+0xf9/0xf9 [ 26.269606] [] dns_resolver_preparse+0x743/0x810 [ 26.275983] [] ? dns_resolver_free_preparse+0x40/0x40 [ 26.282791] [] ? dns_resolver_free_preparse+0x40/0x40 [ 26.289603] [] key_create_or_update+0x35e/0xa60 [ 26.295892] [] ? key_type_lookup+0xd0/0xd0 [ 26.301750] [] ? lookup_user_key+0x113/0xd10 [ 26.307870] [] ? __check_object_size+0x174/0x3a9 [ 26.314245] [] ? 0xffffffff810002b8 [ 26.319581] [] SyS_add_key+0x1b1/0x390 [ 26.325089] [] ? key_get_type_from_user.constprop.10+0xe0/0xe0 [ 26.332681] [] ? find_mergeable_anon_vma+0xd0/0xd0 [ 26.339232] [] ? do_fast_syscall_32+0xcf/0x890 [ 26.345433] [] ? key_get_type_from_user.constprop.10+0xe0/0xe0 [ 26.353025] [] do_fast_syscall_32+0x2f7/0x890 [ 26.359144] [] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.365792] [] entry_SYSENTER_compat+0x74/0x83 [ 26.372562] Dumping ftrace buffer: [ 26.376077] (ftrace buffer empty) [ 26.379756] Kernel Offset: disabled [ 26.383360] Rebooting in 86400 seconds..