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 '10.128.0.42' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 20.196287] ------------[ cut here ]------------ [ 20.201080] WARNING: CPU: 1 PID: 3761 at mm/page_alloc.c:3544 __alloc_pages_slowpath+0x1389/0x1e30 [ 20.210195] Kernel panic - not syncing: panic_on_warn set ... [ 20.210195] [ 20.217552] CPU: 1 PID: 3761 Comm: syzkaller750322 Not tainted 4.9.93-gf6bec4e #4 [ 20.225161] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 20.234519] ffff8801b46a73c0 ffffffff81d9c299 ffffffff83a48420 00000000ffffffff [ 20.242558] 0000000000000000 0000000000000001 0000000000000dd8 ffff8801b46a7480 [ 20.250577] ffffffff8141f825 0000000041b58ab3 ffffffff8419bdb0 ffffffff8141f666 [ 20.258575] Call Trace: [ 20.261148] [] dump_stack+0xc1/0x128 [ 20.266491] [] panic+0x1bf/0x3bc [ 20.271482] [] ? add_taint.cold.6+0x16/0x16 [ 20.277447] [] ? __warn.cold.9+0xa6/0x17f [ 20.283243] [] ? __alloc_pages_slowpath+0x1389/0x1e30 [ 20.290063] [] __warn.cold.9+0xc1/0x17f [ 20.295667] [] warn_slowpath_null+0x2c/0x40 [ 20.301615] [] __alloc_pages_slowpath+0x1389/0x1e30 [ 20.308257] [] ? _raw_spin_unlock_irqrestore+0x5a/0x70 [ 20.315158] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 20.321975] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 20.328881] [] ? depot_save_stack+0x25d/0x460 [ 20.335008] [] ? gfp_pfmemalloc_allowed+0x110/0x110 [ 20.341647] [] ? get_page_from_freelist+0xce3/0x19f0 [ 20.348376] [] __alloc_pages_nodemask+0x354/0x700 [ 20.354845] [] ? __alloc_pages_slowpath+0x1e30/0x1e30 [ 20.361669] [] kmalloc_order+0x2a/0x70 [ 20.367187] [] kmalloc_order_trace+0x1f/0x190 [ 20.373308] [] __kmalloc+0x194/0x300 [ 20.378650] [] ? relay_open_buf.part.15+0x88/0xa30 [ 20.385202] [] relay_open_buf.part.15+0xcb/0xa30 [ 20.391586] [] ? _find_next_bit.part.0+0xe0/0x120 [ 20.398053] [] ? memcpy+0x45/0x50 [ 20.403134] [] relay_open+0x4df/0x860 [ 20.408566] [] do_blk_trace_setup+0x3df/0x960 [ 20.414687] [] blk_trace_setup+0xe0/0x1a0 [ 20.420462] [] ? do_blk_trace_setup+0x960/0x960 [ 20.426757] [] ? disk_name+0x98/0x100 [ 20.432182] [] blk_trace_ioctl+0x168/0x2b0 [ 20.438042] [] ? compat_blk_trace_setup+0x200/0x200 [ 20.444690] [] ? save_stack+0xa9/0xd0 [ 20.450115] [] blkdev_ioctl+0x6c5/0x1a70 [ 20.455800] [] ? blkpg_ioctl+0x920/0x920 [ 20.461491] [] ? _raw_spin_unlock_irqrestore+0x5a/0x70 [ 20.468396] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 20.475211] [] block_ioctl+0xde/0x120 [ 20.480637] [] ? blkdev_fallocate+0x440/0x440 [ 20.486765] [] do_vfs_ioctl+0x1ac/0x1150 [ 20.492451] [] ? ioctl_preallocate+0x220/0x220 [ 20.498661] [] ? kmem_cache_free+0x294/0x310 [ 20.504707] [] ? selinux_capable+0x40/0x40 [ 20.510571] [] ? do_sys_open+0x21c/0x5c0 [ 20.516259] [] ? filp_open+0x70/0x70 [ 20.521611] [] ? security_file_ioctl+0x8f/0xc0 [ 20.527822] [] SyS_ioctl+0x8f/0xc0 [ 20.532988] [] ? do_vfs_ioctl+0x1150/0x1150 [ 20.538939] [] do_syscall_64+0x1a6/0x490 [ 20.544640] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 20.552201] Dumping ftrace buffer: [ 20.555778] (ftrace buffer empty) [ 20.559466] Kernel Offset: disabled [ 20.563094] Rebooting in 86400 seconds..