[....] Starting enhanced syslogd: rsyslogd[ 11.894256] audit: type=1400 audit(1514885975.393:4): avc: denied { syslog } for pid=3160 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 '10.128.0.35' (ECDSA) to the list of known hosts. 2018/01/02 09:39:47 parsed 1 programs 2018/01/02 09:39:47 executed programs: 0 syzkaller login: [ 23.830354] audit: type=1400 audit(1514885987.333:5): avc: denied { sys_admin } for pid=3333 comm="syz-executor4" 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 [ 23.847855] IPVS: Creating netns size=2536 id=1 [ 23.864374] IPVS: Creating netns size=2536 id=2 [ 23.874932] IPVS: Creating netns size=2536 id=3 [ 23.895703] IPVS: Creating netns size=2536 id=4 [ 23.909798] audit: type=1400 audit(1514885987.413:6): avc: denied { sys_chroot } for pid=3336 comm="syz-executor4" 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 [ 23.914563] ------------[ cut here ]----- [ 23.938776] WARNING: CPU: 0 PID: 3362 at lib/vsprintf.c:1941 set_precision+0x144/0x170 [ 23.938776] WARNING: CPU: 0 PID: 3362 at lib precision 65272 too large precision 65272 too large[ 24.124028] Kernel panic - not sy[n 24 . 1 27 1 1 9] O pt i o n ' [ 24 .1 87 8 5 2] CP U : 0 P ID : 3 3 6 2 C o m m : s yz - e x ec ut or 2 N o t t a i nt ed 4. 9. 73 -g f 3f 3 4 57 # 1 [ 24.225830] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.235159] ffff8801c2dff728 ffffffff81d922b9 ffffffff83a46d00 ffffffff8888001c21dc2fdfff880000tion ' [ 24.330348] ffffffff83c0f800 ffffffff81db35b4 0000000000000009 ffff8801c2dff7f0 [ 24.338313] ffffffff8142d741 0000000041b58ab3 ffffffff84189000 ffffffff8142d585[ 24.345360] Option ' [ 2 4 . 3 5 0 10 9] O p t i o n ' [ 24.521384] Call Trace: [ 24.523950] [] dump_stack+0xc1/0x128 [ 24.529282] [] ? set_precision+0x144/0x170 [ 24.535137] [<[io n ' 2 4 .5 3 6 5 8 9 ] O pt i o n ' [ 2 4 .5 8 38 9 5] [ < f f f f f f ff 81 42 d 58 5 >] ? p e r c p u_ u p _ re a d_ p re e mp t _e na b l e. c o n st p r o p. 5 3+ 0 x d 7/ 0x d 7 [ 24.635563] [] ? vprintk_emit+0x3ad/0x750 [ 24.641335] [] ? __warn+0x1a9/0x1e0 [ 24.646583] [] ? set_preci[ 24 . 6 5 06 5 4 ] O ption ' [ 2 4. 7 06 7 96 ] [< ff ff ff f f 8 1 12 f 4 04 > ] _ _w a rn + 0 x1 c 4 /0 x 1e 0 [ 24.744624] [] warn_slowpath_fmt+0xc4/0x110 [ 24.750568] [] ? __warn+0x1e0/0x1e0 [ 24.755820] [] ? avc_has[ 2 4 . 7 59 6 8 0 ] O pt i on ' [ 2 4. 8 1 65 3 9] [ ] ? no op _c o u n t+ 0 x 40 / 0 x4 0 [ 24.854128] [] ? check_usage_backwards+0x171/0x300 [ 24.860679] [] set_precision+0x144/0x170 [ 24.866368] [ 24 . 8 6 92 9 3 ] Op t io n ' [ 24 . 92 7 26 5 ] [ < f f ff f ff f8 1d bc a 8 0> ] ? p o in t e r +0 x a 9 0/ 0 x a 9 0 [ 24.964231] [] ? mark_lock+0x99b/0xfd0 [ 24.969739] [] vscnprintf+0x2d/0x60 [ 24.974998] [] vprintk_emit+0xf1/0x750 [ 24.980514] [] vprintk+0x28/0x30 [ 24.985501] [] vprintk_default+0x1d/0x30 [ 24.991192] [] printk+0xb7/0xe2 [ 24.996090] [] ? load_image_and_restore+0xf9/0xf9 [ 25.002551] [] dns_resolver_preparse+0x743/0x810 [ 25.008923] [] ? dns_resolver_free_preparse+0x40/0x40 [ 25.015730] [] ? dns_resolver_free_preparse+0x40/0x40 [ 25.022537] [] key_create_or_update+0x35e/0xa60 [ 25.028821] [] ? key_type_lookup+0xd0/0xd0 [ 25.034683] [] ? lookup_user_key+0x113/0xd10 [ 25.040717] [] ? __check_object_size+0x174/0x3a9 [ 25.047090] [] ? 0xffffffff810002b8 [ 25.052332] [] SyS_add_key+0x1b1/0x390 [ 25.057837] [] ? key_get_type_from_user.constprop.10+0xe0/0xe0 [ 25.065427] [] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 25.071973] [] entry_SYSCALL_64_fastpath+0x23/0xc6 [ 25.078567] Dumping ftrace buffer: [ 25.082073] (ftrace buffer empty) [ 25.085750] Kernel Offset: disabled [ 25.089343] Rebooting in 86400 seconds..