INIT: Entering runlevel: 2 [[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] 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. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-android-49-kasan-gce-2,10.128.0.11' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 42.337969] ------------[ cut here ]------------ [ 42.338759] WARNING: CPU: 1 PID: 3292 at mm/page_alloc.c:3557 __alloc_pages_slowpath+0x1136/0x1d90 [ 42.339969] Kernel panic - not syncing: panic_on_warn set ... [ 42.339969] [ 42.340936] CPU: 1 PID: 3292 Comm: syzkaller492900 Not tainted 4.9.66-gb763480 #103 [ 42.341953] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.343188] ffff8801ccb47428 ffffffff81d90749 ffffffff83a46d00 ffff8801ccb47500 [ 42.344338] ffffffff83aa3e00 ffffffff8144fc76 0000000000000009 ffff8801ccb474f0 [ 42.345468] ffffffff8142c411 0000000041b58ab3 ffffffff84186e58 ffffffff8142c255 [ 42.346595] Call Trace: [ 42.346951] [] dump_stack+0xc1/0x128 [ 42.347661] [] ? __alloc_pages_slowpath+0x1136/0x1d90 [ 42.348560] [] panic+0x1bc/0x3a8 [ 42.349240] [] ? percpu_up_read_preempt_enable.constprop.54+0xd7/0xd7 [ 42.350315] [] ? load_image_and_restore+0xf9/0xf9 [ 42.351182] [] ? __alloc_pages_slowpath+0x1136/0x1d90 [ 42.352079] [] __warn+0x1c4/0x1e0 [ 42.352769] [] warn_slowpath_null+0x2c/0x40 [ 42.353553] [] __alloc_pages_slowpath+0x1136/0x1d90 [ 42.354433] [] ? _raw_spin_unlock_irqrestore+0x5a/0x70 [ 42.355345] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 42.356242] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 42.357149] [] ? gfp_pfmemalloc_allowed+0x110/0x110 [ 42.358023] [] ? get_page_from_freelist+0xcff/0x19f0 [ 42.364300] [] ? __might_sleep+0x95/0x1a0 [ 42.370062] [] __alloc_pages_nodemask+0x33b/0x6b0 [ 42.376520] [] ? __alloc_pages_slowpath+0x1d90/0x1d90 [ 42.383328] [] kmalloc_order+0x2a/0x70 [ 42.388829] [] kmalloc_order_trace+0x1f/0x190 [ 42.394938] [] __kmalloc+0x19d/0x310 [ 42.400276] [] relay_open_buf.part.15+0xc8/0xa20 [ 42.406648] [] ? _find_next_bit.part.0+0xe0/0x120 [ 42.413107] [] ? memcpy+0x45/0x50 [ 42.418175] [] relay_open+0x4da/0x860 [ 42.423590] [] do_blk_trace_setup+0x3e9/0x950 [ 42.429704] [] blk_trace_setup+0xe0/0x1a0 [ 42.435463] [] ? do_blk_trace_setup+0x950/0x950 [ 42.441745] [] ? disk_name+0x98/0x100 [ 42.447157] [] blk_trace_ioctl+0x1de/0x300 [ 42.453003] [] ? compat_blk_trace_setup+0x250/0x250 [ 42.459633] [] ? avc_has_extended_perms+0x3fc/0xf10 [ 42.466261] [] ? __lock_is_held+0xa1/0xf0 [ 42.472020] [] blkdev_ioctl+0xb00/0x1a60 [ 42.477698] [] ? blkpg_ioctl+0x930/0x930 [ 42.483377] [] ? __lru_cache_add+0x187/0x250 [ 42.489397] [] ? lru_cache_add+0xd9/0x1e0 [ 42.495159] [] ? handle_mm_fault+0xb12/0x2530 [ 42.501267] [] block_ioctl+0xde/0x120 [ 42.506682] [] ? blkdev_fallocate+0x440/0x440 [ 42.512790] [] do_vfs_ioctl+0x1aa/0x1140 [ 42.518472] [] ? ioctl_preallocate+0x220/0x220 [ 42.524666] [] ? selinux_file_ioctl+0x355/0x530 [ 42.530956] [] ? selinux_capable+0x40/0x40 [ 42.536803] [] ? up_read+0x1a/0x40 [ 42.541958] [] ? __do_page_fault+0x3bd/0xd40 [ 42.547992] [] ? security_file_ioctl+0x89/0xb0 [ 42.554186] [] SyS_ioctl+0x8f/0xc0 [ 42.559342] [] entry_SYSCALL_64_fastpath+0x23/0xc6 [ 42.566363] Dumping ftrace buffer: [ 42.569907] (ftrace buffer empty) [ 42.573582] Kernel Offset: disabled [ 42.577187] Rebooting in 86400 seconds..