[....] Starting enhanced syslogd: rsyslogd[ 9.891406] audit: type=1400 audit(1513704834.574:4): avc: denied { syslog } for pid=3175 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 periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-android-49-kasan-gce-4,10.128.15.192' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 17.869132] ------------[ cut here ]------------ [ 17.869905] WARNING: CPU: 1 PID: 3323 at mm/page_alloc.c:3550 __alloc_pages_slowpath+0x1136/0x1d90 [ 17.871101] Kernel panic - not syncing: panic_on_warn set ... [ 17.871101] [ 17.872090] CPU: 1 PID: 3323 Comm: syzkaller844554 Not tainted 4.9.70-gc14c7b3 #110 [ 17.873106] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 17.874324] ffff8801c9577428 ffffffff81d90c49 ffffffff83a46d00 ffff8801c9577500 [ 17.875472] ffffffff83aa3e00 ffffffff8144fe36 0000000000000009 ffff8801c95774f0 [ 17.876633] ffffffff8142c481 0000000041b58ab3 ffffffff84187288 ffffffff8142c2c5 [ 17.877758] Call Trace: [ 17.878117] [] dump_stack+0xc1/0x128 [ 17.878846] [] ? __alloc_pages_slowpath+0x1136/0x1d90 [ 17.879746] [] panic+0x1bc/0x3a8 [ 17.880410] [] ? percpu_up_read_preempt_enable.constprop.54+0xd7/0xd7 [ 17.881485] [] ? load_image_and_restore+0xf9/0xf9 [ 17.882376] [] ? __warn+0x1a9/0x1e0 [ 17.883098] [] ? __alloc_pages_slowpath+0x1136/0x1d90 [ 17.883996] [] __warn+0x1c4/0x1e0 [ 17.884686] [] warn_slowpath_null+0x2c/0x40 [ 17.885482] [] __alloc_pages_slowpath+0x1136/0x1d90 [ 17.886408] [] ? _raw_spin_unlock_irqrestore+0x5a/0x70 [ 17.887327] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 17.888224] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 17.889154] [] ? gfp_pfmemalloc_allowed+0x110/0x110 [ 17.890031] [] ? get_page_from_freelist+0xcff/0x19f0 [ 17.896750] [] ? __might_sleep+0x95/0x1a0 [ 17.902511] [] __alloc_pages_nodemask+0x33b/0x6b0 [ 17.908966] [] ? __alloc_pages_slowpath+0x1d90/0x1d90 [ 17.915768] [] kmalloc_order+0x2a/0x70 [ 17.921267] [] kmalloc_order_trace+0x1f/0x190 [ 17.927379] [] __kmalloc+0x19d/0x310 [ 17.932709] [] relay_open_buf.part.15+0xc8/0xa20 [ 17.939080] [] ? _find_next_bit.part.0+0xe0/0x120 [ 17.945535] [] ? memcpy+0x45/0x50 [ 17.950600] [] relay_open+0x4da/0x860 [ 17.956017] [] do_blk_trace_setup+0x3e9/0x950 [ 17.962125] [] blk_trace_setup+0xe0/0x1a0 [ 17.967891] [] ? do_blk_trace_setup+0x950/0x950 [ 17.974174] [] ? disk_name+0x98/0x100 [ 17.979589] [] blk_trace_ioctl+0x1de/0x300 [ 17.985436] [] ? compat_blk_trace_setup+0x250/0x250 [ 17.992073] [] ? avc_has_extended_perms+0x3fc/0xf10 [ 17.998702] [] ? __lock_is_held+0xa1/0xf0 [ 18.004464] [] blkdev_ioctl+0xb00/0x1a60 [ 18.010137] [] ? blkpg_ioctl+0x930/0x930 [ 18.015811] [] ? __lru_cache_add+0x187/0x250 [ 18.021831] [] ? lru_cache_add+0xd9/0x1e0 [ 18.027594] [] ? handle_mm_fault+0xb12/0x2530 [ 18.033709] [] block_ioctl+0xde/0x120 [ 18.039131] [] ? blkdev_fallocate+0x440/0x440 [ 18.045251] [] do_vfs_ioctl+0x1aa/0x1140 [ 18.050926] [] ? ioctl_preallocate+0x220/0x220 [ 18.057126] [] ? selinux_file_ioctl+0x355/0x530 [ 18.063407] [] ? selinux_capable+0x40/0x40 [ 18.069257] [] ? up_read+0x1a/0x40 [ 18.074413] [] ? __do_page_fault+0x3bd/0xd40 [ 18.080436] [] ? security_file_ioctl+0x89/0xb0 [ 18.086631] [] SyS_ioctl+0x8f/0xc0 [ 18.091790] [] entry_SYSCALL_64_fastpath+0x23/0xc6 [ 18.098857] Dumping ftrace buffer: [ 18.102401] (ftrace buffer empty) [ 18.106074] Kernel Offset: disabled [ 18.109678] Rebooting in 86400 seconds..