[?25l[?1c7[ ok 8[?25h[?0c. [....] 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[ 10.236439] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 14.593303] random: crng init done Warning: Permanently added '10.128.10.3' (ECDSA) to the list of known hosts. executing program [ 25.412102] ------------[ cut here ]------------ [ 25.416890] WARNING: CPU: 1 PID: 2045 at mm/page_alloc.c:3556 __alloc_pages_nodemask+0x13a0/0x1bd0 [ 25.426093] Kernel panic - not syncing: panic_on_warn set ... [ 25.426093] [ 25.433540] CPU: 1 PID: 2045 Comm: syz-executor197 Not tainted 4.9.141+ #1 [ 25.440553] ffff8801cf71ef88 ffffffff81b42e79 ffffffff82a38ce0 00000000ffffffff [ 25.448860] ffffffff82a96600 0000000000000001 0000000000000009 ffff8801cf71f048 [ 25.458852] ffffffff813f7125 0000000041b58ab3 ffffffff82e2b62b ffffffff813f6f66 [ 25.466875] Call Trace: [ 25.469462] [] dump_stack+0xc1/0x128 [ 25.475162] [] panic+0x1bf/0x39f [ 25.480168] [] ? add_taint.cold.5+0x16/0x16 [ 25.486125] [] ? __warn.cold.8+0x14/0x2f [ 25.491834] [] ? __alloc_pages_nodemask+0x13a0/0x1bd0 [ 25.498661] [] __warn.cold.8+0x2f/0x2f [ 25.504267] [] warn_slowpath_null+0x2c/0x40 [ 25.510218] [] __alloc_pages_nodemask+0x13a0/0x1bd0 [ 25.517406] [] ? kasan_kmalloc.part.1+0xc9/0xf0 [ 25.523723] [] ? kasan_kmalloc.part.1+0x62/0xf0 [ 25.530026] [] ? kmem_cache_alloc_trace+0x117/0x2e0 [ 25.537128] [] ? user_read+0xce/0x3e0 [ 25.542658] [] ? gfp_pfmemalloc_allowed+0x110/0x110 [ 25.549390] [] ? vfs_write+0x187/0x520 [ 25.555027] [] ? SyS_write+0xd9/0x1c0 [ 25.560456] [] ? do_syscall_64+0x19f/0x550 [ 25.566583] [] ? entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 25.574308] [] ? quarantine_put+0xd9/0x180 [ 25.580169] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 25.586986] [] ? policydb_read+0x85e/0x2390 [ 25.592936] [] ? kasan_slab_free+0x119/0x190 [ 25.598983] [] ? save_stack_trace+0x16/0x20 [ 25.604940] [] ? kasan_slab_free+0xac/0x190 [ 25.610945] [] ? kfree+0xfb/0x310 [ 25.616024] [] ? policydb_read+0x85e/0x2390 [ 25.622027] [] ? security_load_policy+0x264/0x9b0 [ 25.628510] [] ? __vfs_write+0x115/0x580 [ 25.634310] [] kmalloc_order+0x2a/0x70 [ 25.639823] [] kmalloc_order_trace+0x1f/0x190 [ 25.645946] [] __kmalloc+0x1ae/0x310 [ 25.651302] [] str_read+0x39/0x150 [ 25.656469] [] user_read+0x23a/0x3e0 [ 25.661818] [] ? mls_read_range_helper+0x380/0x380 [ 25.669172] [] ? debug_object_activate+0x4e0/0x4e0 [ 25.675750] [] ? kfree+0xdb/0x310 [ 25.680839] [] ? policydb_read+0x85e/0x2390 [ 25.686851] [] ? mls_read_range_helper+0x380/0x380 [ 25.693420] [] policydb_read+0xdba/0x2390 [ 25.699330] [] ? unwind_next_frame+0x7d/0xd0 [ 25.705379] [] ? __save_stack_trace+0x7d/0xf0 [ 25.711508] [] ? string_to_av_perm+0x90/0x90 [ 25.717745] [] ? kasan_kmalloc+0xaf/0xc0 [ 25.723536] [] ? kmem_cache_alloc_trace+0x117/0x2e0 [ 25.730183] [] ? check_preemption_disabled+0x3b/0x200 [ 25.737147] [] ? kasan_unpoison_shadow+0x35/0x50 [ 25.743642] [] ? kasan_kmalloc+0xaf/0xc0 [ 25.749361] [] ? kmem_cache_alloc_trace+0x117/0x2e0 [ 25.756029] [] ? security_load_policy+0x137/0x9b0 [ 25.762505] [] security_load_policy+0x264/0x9b0 [ 25.769264] [] ? security_get_bools+0x690/0x690 [ 25.775578] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 25.782417] [] ? __alloc_pages_nodemask+0x11df/0x1bd0 [ 25.789236] [] ? trace_hardirqs_on+0x10/0x10 [ 25.796246] [] ? gfp_pfmemalloc_allowed+0x110/0x110 [ 25.802900] [] ? vmap_page_range_noflush+0x512/0x770 [ 25.810063] [] ? alloc_vmap_area.isra.8+0x8d0/0x8d0 [ 25.816706] [] ? kasan_unpoison_shadow+0x35/0x50 [ 25.823102] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 25.829843] [] ? check_stack_object+0x110/0x150 [ 25.836144] [] ? __check_object_size+0x248/0x38e [ 25.842708] [] sel_write_load+0x19b/0xfa0 [ 25.848484] [] ? trace_hardirqs_on+0xd/0x10 [ 25.854438] [] ? sel_read_bool+0x240/0x240 [ 25.860300] [] ? kasan_slab_free+0xac/0x190 [ 25.866253] [] ? kmem_cache_free+0xbe/0x310 [ 25.872201] [] ? trace_hardirqs_on+0x10/0x10 [ 25.878255] [] __vfs_write+0x115/0x580 [ 25.883770] [] ? sel_read_bool+0x240/0x240 [ 25.889630] [] ? __vfs_read+0x560/0x560 [ 25.895248] [] ? putname+0xdb/0x110 [ 25.900501] [] ? check_preemption_disabled+0x3b/0x200 [ 25.907317] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 25.914134] [] ? rcu_sync_lockdep_assert+0x73/0xb0 [ 25.920688] [] ? __sb_start_write+0x161/0x300 [ 25.926828] [] vfs_write+0x187/0x520 [ 25.932178] [] SyS_write+0xd9/0x1c0 [ 25.937510] [] ? SyS_read+0x1c0/0x1c0 [ 25.942956] [] ? do_syscall_64+0x48/0x550 [ 25.948775] [] ? SyS_read+0x1c0/0x1c0 [ 25.954201] [] do_syscall_64+0x19f/0x550 [ 25.959890] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 25.967507] Kernel Offset: disabled [ 25.971125] Rebooting in 86400 seconds..