[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 9.977052] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 16.485305] random: crng init done Warning: Permanently added '10.128.10.6' (ECDSA) to the list of known hosts. executing program [ 55.547051] ------------[ cut here ]------------ [ 55.551958] WARNING: CPU: 0 PID: 2063 at mm/page_alloc.c:3556 __alloc_pages_nodemask+0x13a0/0x1bd0 [ 55.561065] Kernel panic - not syncing: panic_on_warn set ... [ 55.561065] [ 55.568467] CPU: 0 PID: 2063 Comm: syz-executor005 Not tainted 4.9.125+ #41 [ 55.575606] ffff8801cd82f6e8 ffffffff81af0ae9 ffffffff82838ba0 00000000ffffffff [ 55.583627] 0000000000000000 0000000000000000 0000000000000de4 ffff8801cd82f7a8 [ 55.591634] ffffffff813df095 0000000041b58ab3 ffffffff82c28773 ffffffff813deed6 [ 55.599655] Call Trace: [ 55.602240] [] dump_stack+0xc1/0x128 [ 55.607584] [] panic+0x1bf/0x39f [ 55.612591] [] ? add_taint.cold.6+0x16/0x16 [ 55.618552] [] ? get_page_from_freelist+0x702/0x18e0 [ 55.625283] [] ? __warn.cold.9+0xa6/0x17f [ 55.631122] [] ? __alloc_pages_nodemask+0x13a0/0x1bd0 [ 55.637947] [] __warn.cold.9+0xc1/0x17f [ 55.643597] [] warn_slowpath_null+0x2c/0x40 [ 55.649660] [] __alloc_pages_nodemask+0x13a0/0x1bd0 [ 55.656307] [] ? trace_hardirqs_on+0x10/0x10 [ 55.662403] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 55.669226] [] ? gfp_pfmemalloc_allowed+0x110/0x110 [ 55.675919] [] ? trace_hardirqs_on+0x10/0x10 [ 55.681962] [] ? __lock_acquire+0x654/0x4a10 [ 55.688000] [] kmalloc_order+0x2a/0x70 [ 55.693513] [] kmalloc_order_trace+0x1f/0x190 [ 55.699644] [] __kmalloc+0x1ae/0x310 [ 55.704987] [] vga_arb_write+0xd8/0xcc0 [ 55.710601] [] ? kasan_slab_free+0x119/0x190 [ 55.716651] [] ? vga_str_to_iostate.isra.3+0x130/0x130 [ 55.723559] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 55.730292] [] ? check_preemption_disabled+0x3b/0x170 [ 55.737111] [] ? check_preemption_disabled+0x3b/0x170 [ 55.743931] [] ? __fd_install+0x20f/0x5d0 [ 55.749722] [] ? __fd_install+0x24a/0x5d0 [ 55.755499] [] ? get_unused_fd_flags+0xd0/0xd0 [ 55.761721] [] __vfs_write+0x115/0x580 [ 55.767239] [] ? vga_str_to_iostate.isra.3+0x130/0x130 [ 55.774147] [] ? __vfs_read+0x560/0x560 [ 55.779780] [] ? __might_sleep+0x95/0x1a0 [ 55.785615] [] ? __inode_security_revalidate+0xd9/0x130 [ 55.792614] [] ? avc_policy_seqno+0x9/0x20 [ 55.798504] [] ? selinux_file_permission+0x82/0x470 [ 55.805252] [] ? security_file_permission+0x8f/0x1e0 [ 55.811982] [] ? rw_verify_area+0xe5/0x2a0 [ 55.817839] [] vfs_write+0x187/0x520 [ 55.823183] [] SyS_write+0xd9/0x1c0 [ 55.828455] [] ? SyS_read+0x1c0/0x1c0 [ 55.833885] [] ? do_fast_syscall_32+0xcf/0x860 [ 55.840098] [] ? SyS_read+0x1c0/0x1c0 [ 55.845580] [] do_fast_syscall_32+0x2f1/0x860 [ 55.851707] [] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 55.858367] [] entry_SYSENTER_compat+0x90/0xa2 [ 55.864941] Dumping ftrace buffer: [ 55.868523] (ftrace buffer empty) [ 55.872216] Kernel Offset: disabled [ 55.875954] Rebooting in 86400 seconds..