[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Starting mcstransd: [ 10.796523] random: sshd: uninitialized urandom read (32 bytes read) [....] 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. [ 11.426900] random: crng init done Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.34' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 21.493919] ------------[ cut here ]------------ [ 21.495062] WARNING: CPU: 1 PID: 2037 at mm/page_alloc.c:3556 __alloc_pages_nodemask+0x13a0/0x1bd0 [ 21.496414] Kernel panic - not syncing: panic_on_warn set ... [ 21.496414] [ 21.497576] CPU: 1 PID: 2037 Comm: syz-executor983 Not tainted 4.9.141+ #1 [ 21.498683] ffff8801c61d7708 ffffffff81b42e79 ffffffff82a38ce0 00000000ffffffff [ 21.499902] ffffffff82a96600 0000000000000001 0000000000000009 ffff8801c61d77c8 [ 21.501283] ffffffff813f7125 0000000041b58ab3 ffffffff82e2b62b ffffffff813f6f66 [ 21.502799] Call Trace: [ 21.503270] [] dump_stack+0xc1/0x128 [ 21.504086] [] panic+0x1bf/0x39f [ 21.505048] [] ? add_taint.cold.5+0x16/0x16 [ 21.505899] [] ? __warn.cold.8+0x14/0x2f [ 21.506838] [] ? __alloc_pages_nodemask+0x13a0/0x1bd0 [ 21.507810] [] __warn.cold.8+0x2f/0x2f [ 21.508702] [] warn_slowpath_null+0x2c/0x40 [ 21.509697] [] __alloc_pages_nodemask+0x13a0/0x1bd0 [ 21.510829] [] ? mark_held_locks+0xc7/0x130 [ 21.511644] [] ? gfp_pfmemalloc_allowed+0x110/0x110 [ 21.512546] [] ? trace_hardirqs_on+0x10/0x10 [ 21.513371] [] ? uinput_write+0x7a9/0xce0 [ 21.515040] [] ? __vfs_write+0x115/0x580 [ 21.520729] [] ? mark_held_locks+0xc7/0x130 [ 21.526690] [] ? mutex_lock_interruptible_nested+0x7f3/0x9c0 [ 21.534155] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 21.541025] [] kmalloc_order+0x2a/0x70 [ 21.546543] [] kmalloc_order_trace+0x1f/0x190 [ 21.552662] [] __kmalloc+0x1ae/0x310 [ 21.558005] [] ? avc_has_extended_perms+0x56a/0xd90 [ 21.564648] [] ? avc_has_extended_perms+0xde/0xd90 [ 21.571203] [] input_mt_init_slots+0xcb/0x400 [ 21.577325] [] uinput_ioctl_handler.isra.4+0x161d/0x1980 [ 21.585592] [] ? avc_ss_reset+0x110/0x110 [ 21.591842] [] ? uinput_ff_upload_from_user+0x350/0x350 [ 21.598839] [] ? uinput_write+0x88/0xce0 [ 21.604545] [] ? uinput_ioctl+0x60/0x60 [ 21.610171] [] uinput_ioctl+0x4c/0x60 [ 21.615607] [] ? uinput_compat_ioctl+0x80/0x80 [ 21.621839] [] do_vfs_ioctl+0x1ac/0x11a0 [ 21.627817] [] ? ioctl_preallocate+0x220/0x220 [ 21.634180] [] ? __fsnotify_update_child_dentry_flags.part.0+0x300/0x300 [ 21.642673] [] ? selinux_parse_skb.constprop.42+0x1a90/0x1a90 [ 21.650187] [] ? rw_verify_area+0xe5/0x2a0 [ 21.656046] [] ? vfs_write+0x324/0x520 [ 21.661680] [] ? security_file_ioctl+0x8f/0xc0 [ 21.668043] [] SyS_ioctl+0x8f/0xc0 [ 21.673214] [] ? do_vfs_ioctl+0x11a0/0x11a0 [ 21.679168] [] do_syscall_64+0x19f/0x550 [ 21.685184] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 21.692905] Kernel Offset: disabled [ 21.696545] Rebooting in 86400 seconds..