[....] Starting enhanced syslogd: rsyslogd[ 11.097835] audit: type=1400 audit(1513270089.981:4): avc: denied { syslog } for pid=3172 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 mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-android-49-kasan-gce-5,10.128.0.34' (ECDSA) to the list of known hosts. 2017/12/14 16:48:19 parsed 1 programs 2017/12/14 16:48:19 executed programs: 0 syzkaller login: [ 20.706006] IPVS: Creating netns size=2536 id=1 [ 20.720320] ------------[ cut here ]------------ [ 20.721068] WARNING: CPU: 1 PID: 3339 at mm/page_alloc.c:3550 __alloc_pages_slowpath+0x1136/0x1d90 [ 20.722285] Kernel panic - not syncing: panic_on_warn set ... [ 20.722285] [ 20.723269] CPU: 1 PID: 3339 Comm: syz-executor0 Not tainted 4.9.69-g3f1d77c #108 [ 20.724263] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 20.725497] ffff8801d8c2f580 ffffffff81d90a29 ffffffff83a46d00 ffff8801d8c2f658 [ 20.729597] ffffffff83aa3e00 ffffffff8144fe06 0000000000000009 ffff8801d8c2f648 [ 20.737549] ffffffff8142c451 0000000041b58ab3 ffffffff84186f18 ffffffff8142c295 [ 20.745497] Call Trace: [ 20.748050] [] dump_stack+0xc1/0x128 [ 20.753382] [] ? __alloc_pages_slowpath+0x1136/0x1d90 [ 20.760187] [] panic+0x1bc/0x3a8 [ 20.765166] [] ? percpu_up_read_preempt_enable.constprop.54+0xd7/0xd7 [ 20.773360] [] ? load_image_and_restore+0xf9/0xf9 [ 20.780165] [] ? __alloc_pages_slowpath+0x1136/0x1d90 [ 20.786969] [] __warn+0x1c4/0x1e0 [ 20.792036] [] warn_slowpath_null+0x2c/0x40 [ 20.797970] [] __alloc_pages_slowpath+0x1136/0x1d90 [ 20.804600] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 20.811580] [] ? check_preemption_disabled+0x3b/0x200 [ 20.818387] [] ? check_preemption_disabled+0x3b/0x200 [ 20.825200] [] ? gfp_pfmemalloc_allowed+0x110/0x110 [ 20.831833] [] ? get_page_from_freelist+0xcff/0x19f0 [ 20.838553] [] ? __might_sleep+0x95/0x1a0 [ 20.844316] [] __alloc_pages_nodemask+0x33b/0x6b0 [ 20.850773] [] ? __alloc_pages_slowpath+0x1d90/0x1d90 [ 20.857576] [] kmalloc_order+0x2a/0x70 [ 20.863076] [] kmalloc_order_trace+0x1f/0x190 [ 20.869185] [] __kmalloc+0x19d/0x310 [ 20.874517] [] vga_arb_write+0xda/0xda0 [ 20.880106] [] ? vga_get+0x3f0/0x3f0 [ 20.885440] [] ? __might_sleep+0x95/0x1a0 [ 20.891206] [] ? rw_copy_check_uvector+0x229/0x2c0 [ 20.897752] [] ? __inode_security_revalidate+0xd9/0x130 [ 20.904731] [] ? avc_policy_seqno+0x9/0x20 [ 20.910579] [] do_loop_readv_writev.part.17+0x141/0x1e0 [ 20.917557] [] ? security_file_permission+0x89/0x1e0 [ 20.924278] [] ? vga_get+0x3f0/0x3f0 [ 20.929604] [] ? vga_get+0x3f0/0x3f0 [ 20.934932] [] do_readv_writev+0x520/0x750 [ 20.940784] [] ? vfs_write+0x530/0x530 [ 20.946287] [] ? exit_robust_list+0x230/0x230 [ 20.952399] [] ? __fget+0x201/0x3a0 [ 20.957638] [] ? __fget+0x228/0x3a0 [ 20.962885] [] ? __fget+0x47/0x3a0 [ 20.968039] [] vfs_writev+0x87/0xc0 [ 20.973279] [] do_writev+0xe6/0x250 [ 20.978518] [] ? vfs_writev+0xc0/0xc0 [ 20.983934] [] ? entry_SYSCALL_64_fastpath+0x5/0xc6 [ 20.990566] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 20.997455] [] SyS_writev+0x27/0x30 [ 21.002695] [] entry_SYSCALL_64_fastpath+0x23/0xc6 [ 21.009756] Dumping ftrace buffer: [ 21.013285] (ftrace buffer empty) [ 21.016959] Kernel Offset: disabled [ 21.020551] Rebooting in 86400 seconds..