[[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[ 11.013331] 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: [ 15.602616] random: sshd: uninitialized urandom read (32 bytes read) [ 15.754691] random: crng init done Warning: Permanently added '10.128.10.14' (ECDSA) to the list of known hosts. executing program [ 22.183241] ------------[ cut here ]------------ [ 22.188158] WARNING: CPU: 0 PID: 2225 at mm/page_alloc.c:3556 __alloc_pages_nodemask+0x1189/0x1b90 [ 22.197432] Kernel panic - not syncing: panic_on_warn set ... [ 22.197432] [ 22.204779] CPU: 0 PID: 2225 Comm: syz-executor518 Not tainted 4.9.124+ #32 [ 22.211850] ffff8801bee27700 ffffffff81af4529 ffffffff82838de0 00000000ffffffff [ 22.219841] 0000000000000000 0000000000000000 0000000000000de4 ffff8801bee277c0 [ 22.227944] ffffffff813f1b55 0000000041b58ab3 ffffffff82c2889b ffffffff813f1996 [ 22.236092] Call Trace: [ 22.238755] [] dump_stack+0xc1/0x128 [ 22.244113] [] panic+0x1bf/0x39f [ 22.249136] [] ? add_taint.cold.6+0x16/0x16 [ 22.255089] [] ? get_page_from_freelist+0x702/0x18e0 [ 22.261825] [] ? __warn.cold.9+0xa6/0x17f [ 22.267600] [] ? __alloc_pages_nodemask+0x1189/0x1b90 [ 22.274413] [] __warn.cold.9+0xc1/0x17f [ 22.280051] [] warn_slowpath_null+0x2c/0x40 [ 22.285993] [] __alloc_pages_nodemask+0x1189/0x1b90 [ 22.292639] [] ? trace_hardirqs_on+0x10/0x10 [ 22.298679] [] ? trace_hardirqs_on+0x10/0x10 [ 22.304723] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 22.311537] [] ? gfp_pfmemalloc_allowed+0x110/0x110 [ 22.318183] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 22.324917] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 22.331653] [] ? update_stack_state.constprop.2+0x7c/0x170 [ 22.338914] [] kmalloc_order+0x2a/0x70 [ 22.344430] [] kmalloc_order_trace+0x1f/0x190 [ 22.350566] [] __kmalloc+0x194/0x300 [ 22.355920] [] vga_arb_write+0xd8/0xcc0 [ 22.361522] [] ? kasan_slab_free+0x119/0x190 [ 22.367558] [] ? vga_str_to_iostate.isra.3+0x130/0x130 [ 22.374471] [] ? kasan_slab_free+0xac/0x190 [ 22.380419] [] ? kmem_cache_free+0xbe/0x310 [ 22.386371] [] ? putname+0xdb/0x110 [ 22.391627] [] ? do_sys_open+0x2da/0x5c0 [ 22.397329] [] ? SyS_openat+0x30/0x40 [ 22.402763] [] ? do_syscall_64+0x19f/0x480 [ 22.408630] [] ? entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 22.415713] [] ? _raw_spin_unlock_irqrestore+0x5a/0x70 [ 22.422621] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 22.429443] [] __vfs_write+0x115/0x580 [ 22.434963] [] ? vga_str_to_iostate.isra.3+0x130/0x130 [ 22.441866] [] ? __vfs_read+0x560/0x560 [ 22.447470] [] ? __might_sleep+0x95/0x1a0 [ 22.453244] [] ? putname+0xdb/0x110 [ 22.458542] [] ? __inode_security_revalidate+0xd9/0x130 [ 22.465540] [] ? avc_policy_seqno+0x9/0x20 [ 22.471401] [] ? selinux_file_permission+0x82/0x470 [ 22.478068] [] ? security_file_permission+0x8f/0x1e0 [ 22.484799] [] ? rw_verify_area+0xe5/0x2a0 [ 22.490675] [] vfs_write+0x187/0x520 [ 22.496035] [] SyS_write+0xd9/0x1c0 [ 22.501300] [] ? SyS_read+0x1c0/0x1c0 [ 22.506733] [] ? do_syscall_64+0x48/0x480 [ 22.512532] [] ? SyS_read+0x1c0/0x1c0 [ 22.517959] [] do_syscall_64+0x19f/0x480 [ 22.523659] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 22.530841] Dumping ftrace buffer: [ 22.534416] (ftrace buffer empty) [ 22.538367] Kernel Offset: disabled [ 22.541973] Rebooting in 86400 seconds..