[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 10.000170] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 22.825212] random: sshd: uninitialized urandom read (32 bytes read) [ 22.963980] random: crng init done Warning: Permanently added '10.128.0.35' (ECDSA) to the list of known hosts. executing program [ 36.018499] ------------[ cut here ]------------ [ 36.023673] WARNING: CPU: 0 PID: 2062 at mm/page_alloc.c:3556 __alloc_pages_nodemask+0x13a0/0x1bd0 [ 36.032785] Kernel panic - not syncing: panic_on_warn set ... [ 36.032785] [ 36.040128] CPU: 0 PID: 2062 Comm: syz-executor490 Not tainted 4.9.143+ #75 [ 36.047283] ffff8801ce027708 ffffffff81b43899 ffffffff82a39060 00000000ffffffff [ 36.055297] ffffffff82a96a00 0000000000000000 0000000000000009 ffff8801ce0277c8 [ 36.063288] ffffffff813f7285 0000000041b58ab3 ffffffff82e2e83b ffffffff813f70c6 [ 36.071585] Call Trace: [ 36.074153] [] dump_stack+0xc1/0x128 [ 36.079492] [] panic+0x1bf/0x39f [ 36.084642] [] ? add_taint.cold.5+0x16/0x16 [ 36.090586] [] ? __warn.cold.8+0x14/0x2f [ 36.096473] [] ? __alloc_pages_nodemask+0x13a0/0x1bd0 [ 36.103295] [] __warn.cold.8+0x2f/0x2f [ 36.108809] [] warn_slowpath_null+0x2c/0x40 [ 36.114764] [] __alloc_pages_nodemask+0x13a0/0x1bd0 [ 36.121531] [] ? mark_held_locks+0xc7/0x130 [ 36.127489] [] ? gfp_pfmemalloc_allowed+0x110/0x110 [ 36.134129] [] ? trace_hardirqs_on+0x10/0x10 [ 36.140163] [] ? uinput_write+0x7a9/0xce0 [ 36.145964] [] ? __vfs_write+0x115/0x580 [ 36.151653] [] ? mark_held_locks+0xc7/0x130 [ 36.157615] [] ? mutex_lock_interruptible_nested+0x7f3/0x9c0 [ 36.165035] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 36.171866] [] kmalloc_order+0x2a/0x70 [ 36.177411] [] kmalloc_order_trace+0x1f/0x190 [ 36.183532] [] __kmalloc+0x1ae/0x310 [ 36.188876] [] ? avc_has_extended_perms+0x56a/0xd90 [ 36.195524] [] ? avc_has_extended_perms+0xde/0xd90 [ 36.202088] [] input_mt_init_slots+0xcb/0x400 [ 36.208351] [] uinput_ioctl_handler.isra.4+0x161d/0x1980 [ 36.215476] [] ? avc_ss_reset+0x110/0x110 [ 36.221249] [] ? uinput_ff_upload_from_user+0x350/0x350 [ 36.228353] [] ? uinput_write+0x88/0xce0 [ 36.234040] [] ? uinput_ioctl+0x60/0x60 [ 36.239637] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 36.246452] [] uinput_ioctl+0x4c/0x60 [ 36.251892] [] ? uinput_compat_ioctl+0x80/0x80 [ 36.258108] [] do_vfs_ioctl+0x1ac/0x11a0 [ 36.263802] [] ? ioctl_preallocate+0x220/0x220 [ 36.270018] [] ? selinux_parse_skb.constprop.42+0x1a90/0x1a90 [ 36.277639] [] ? rw_verify_area+0xe5/0x2a0 [ 36.283536] [] ? vfs_write+0x324/0x520 [ 36.289126] [] ? security_file_ioctl+0x8f/0xc0 [ 36.295339] [] SyS_ioctl+0x8f/0xc0 [ 36.300521] [] ? do_vfs_ioctl+0x11a0/0x11a0 [ 36.306470] [] do_syscall_64+0x19f/0x550 [ 36.312157] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 36.319383] Kernel Offset: disabled [ 36.323000] Rebooting in 86400 seconds..