[....] Starting enhanced syslogd: rsyslogd[ 15.575945] audit: type=1400 audit(1518105881.258:4): avc: denied { syslog } for pid=3654 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 '10.128.15.203' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 40.926967] ------------[ cut here ]------------ [ 40.931782] WARNING: CPU: 1 PID: 3819 at mm/page_alloc.c:3544 __alloc_pages_slowpath+0x1136/0x1d90 [ 40.940878] Kernel panic - not syncing: panic_on_warn set ... [ 40.940878] [ 40.948226] CPU: 1 PID: 3819 Comm: syzkaller657379 Not tainted 4.9.80-g20c8a00 #30 [ 40.955908] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.965240] ffff8801d7ee7428 ffffffff81d94b69 ffffffff83a47c40 ffff8801d7ee7500 [ 40.973213] ffffffff83aa4e00 ffffffff81452f16 0000000000000009 ffff8801d7ee74f0 [ 40.981181] ffffffff8142f541 0000000041b58ab3 ffffffff8418ab20 ffffffff8142f385 [ 40.989161] Call Trace: [ 40.991722] [] dump_stack+0xc1/0x128 [ 40.997059] [] ? __alloc_pages_slowpath+0x1136/0x1d90 [ 41.003883] [] panic+0x1bc/0x3a8 [ 41.008870] [] ? percpu_up_read_preempt_enable.constprop.53+0xd7/0xd7 [ 41.017077] [] ? load_image_and_restore+0xf9/0xf9 [ 41.023548] [] ? __warn+0x1a9/0x1e0 [ 41.028795] [] ? __alloc_pages_slowpath+0x1136/0x1d90 [ 41.035603] [] __warn+0x1c4/0x1e0 [ 41.040673] [] warn_slowpath_null+0x2c/0x40 [ 41.046612] [] __alloc_pages_slowpath+0x1136/0x1d90 [ 41.053247] [] ? _raw_spin_unlock_irqrestore+0x5a/0x70 [ 41.060158] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 41.066968] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 41.073866] [] ? gfp_pfmemalloc_allowed+0x110/0x110 [ 41.080512] [] ? get_page_from_freelist+0xcff/0x19f0 [ 41.087236] [] ? __might_sleep+0x95/0x1a0 [ 41.093005] [] __alloc_pages_nodemask+0x33b/0x6b0 [ 41.099466] [] ? __alloc_pages_slowpath+0x1d90/0x1d90 [ 41.106274] [] kmalloc_order+0x2a/0x70 [ 41.111781] [] kmalloc_order_trace+0x1f/0x190 [ 41.117899] [] __kmalloc+0x19d/0x310 [ 41.123234] [] relay_open_buf.part.15+0xc8/0xa20 [ 41.129609] [] ? _find_next_bit.part.0+0xe0/0x120 [ 41.136070] [] ? memcpy+0x45/0x50 [ 41.141146] [] relay_open+0x4da/0x860 [ 41.146564] [] do_blk_trace_setup+0x3e9/0x950 [ 41.152680] [] blk_trace_setup+0xe0/0x1a0 [ 41.158447] [] ? do_blk_trace_setup+0x950/0x950 [ 41.164733] [] ? disk_name+0x98/0x100 [ 41.170150] [] blk_trace_ioctl+0x1de/0x300 [ 41.176004] [] ? compat_blk_trace_setup+0x250/0x250 [ 41.182638] [] ? avc_has_extended_perms+0x3fc/0xf10 [ 41.189273] [] blkdev_ioctl+0xb00/0x1a60 [ 41.194954] [] ? blkpg_ioctl+0x930/0x930 [ 41.200642] [] ? do_huge_pmd_anonymous_page+0xb05/0x10d0 [ 41.207711] [] ? _raw_spin_unlock+0x2c/0x50 [ 41.213653] [] ? do_huge_pmd_anonymous_page+0x2d4/0x10d0 [ 41.220725] [] block_ioctl+0xde/0x120 [ 41.226144] [] ? blkdev_fallocate+0x440/0x440 [ 41.232258] [] do_vfs_ioctl+0x1aa/0x1140 [ 41.237935] [] ? ioctl_preallocate+0x220/0x220 [ 41.244134] [] ? selinux_file_ioctl+0x355/0x530 [ 41.250419] [] ? selinux_capable+0x40/0x40 [ 41.256273] [] ? up_read+0x1a/0x40 [ 41.261437] [] ? __do_page_fault+0x3bd/0xd40 [ 41.267920] [] ? security_file_ioctl+0x89/0xb0 [ 41.274123] [] SyS_ioctl+0x8f/0xc0 [ 41.279283] [] entry_SYSCALL_64_fastpath+0x29/0xe8 [ 41.286416] Dumping ftrace buffer: [ 41.289954] (ftrace buffer empty) [ 41.293635] Kernel Offset: disabled [ 41.297247] Rebooting in 86400 seconds..