[?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[ 11.601972] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 16.028787] random: crng init done Warning: Permanently added '10.128.10.34' (ECDSA) to the list of known hosts. executing program [ 34.347748] ------------[ cut here ]------------ [ 34.352675] WARNING: CPU: 0 PID: 2051 at mm/page_alloc.c:3556 __alloc_pages_nodemask+0x13a0/0x1bd0 [ 34.362070] Kernel panic - not syncing: panic_on_warn set ... [ 34.362070] [ 34.369589] CPU: 0 PID: 2051 Comm: syz-executor134 Not tainted 4.9.141+ #1 [ 34.376642] ffff8801cfe76fc8 ffffffff81b42e79 ffffffff82a38ce0 00000000ffffffff [ 34.384815] ffffffff82a96600 0000000000000000 0000000000000009 ffff8801cfe77088 [ 34.393227] ffffffff813f7125 0000000041b58ab3 ffffffff82e2b62b ffffffff813f6f66 [ 34.401501] Call Trace: [ 34.404160] [] dump_stack+0xc1/0x128 [ 34.409785] [] panic+0x1bf/0x39f [ 34.414790] [] ? add_taint.cold.5+0x16/0x16 [ 34.420851] [] ? __warn.cold.8+0x14/0x2f [ 34.426557] [] ? __alloc_pages_nodemask+0x13a0/0x1bd0 [ 34.433690] [] __warn.cold.8+0x2f/0x2f [ 34.439386] [] warn_slowpath_null+0x2c/0x40 [ 34.445554] [] __alloc_pages_nodemask+0x13a0/0x1bd0 [ 34.452355] [] ? save_stack_trace+0x16/0x20 [ 34.458318] [] ? kasan_kmalloc.part.1+0x62/0xf0 [ 34.464624] [] ? kasan_kmalloc+0xaf/0xc0 [ 34.470569] [] ? __kmalloc+0x12f/0x310 [ 34.476101] [] ? hashtab_create+0x120/0x210 [ 34.482079] [] ? common_read+0x1c5/0x380 [ 34.487788] [] ? policydb_read+0xdba/0x2390 [ 34.493755] [] ? security_load_policy+0x264/0x9b0 [ 34.500241] [] ? sel_write_load+0x19b/0xfa0 [ 34.506894] [] ? __vfs_write+0x115/0x580 [ 34.512689] [] ? vfs_write+0x187/0x520 [ 34.518414] [] ? do_syscall_64+0x19f/0x550 [ 34.525052] [] ? common_read+0xad/0x380 [ 34.530781] [] ? gfp_pfmemalloc_allowed+0x110/0x110 [ 34.537446] [] ? vfs_write+0x187/0x520 [ 34.542973] [] ? SyS_write+0xd9/0x1c0 [ 34.548418] [] ? do_syscall_64+0x19f/0x550 [ 34.554371] [] ? entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 34.561605] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 34.568440] [] ? trace_hardirqs_on+0xd/0x10 [ 34.574581] [] ? save_stack_trace+0x16/0x20 [ 34.580553] [] ? kfree+0xfb/0x310 [ 34.586004] [] ? policydb_read+0x85e/0x2390 [ 34.591972] [] ? check_preemption_disabled+0x3b/0x200 [ 34.598799] [] kmalloc_order+0x2a/0x70 [ 34.604490] [] kmalloc_order_trace+0x1f/0x190 [ 34.610972] [] __kmalloc+0x1ae/0x310 [ 34.616501] [] ? symcmp+0x30/0x30 [ 34.621701] [] str_read+0x39/0x150 [ 34.626947] [] common_read+0x265/0x380 [ 34.632484] [] ? class_read+0x940/0x940 [ 34.638216] [] ? policydb_read+0x85e/0x2390 [ 34.644286] [] ? kfree+0xfb/0x310 [ 34.649377] [] ? class_read+0x940/0x940 [ 34.655103] [] policydb_read+0xdba/0x2390 [ 34.661006] [] ? unwind_next_frame+0x7d/0xd0 [ 34.667128] [] ? __save_stack_trace+0x7d/0xf0 [ 34.673434] [] ? string_to_av_perm+0x90/0x90 [ 34.680101] [] ? kasan_kmalloc+0xaf/0xc0 [ 34.685921] [] ? kmem_cache_alloc_trace+0x117/0x2e0 [ 34.692728] [] ? check_preemption_disabled+0x3b/0x200 [ 34.699709] [] ? kasan_unpoison_shadow+0x35/0x50 [ 34.706197] [] ? kasan_kmalloc+0xaf/0xc0 [ 34.712014] [] ? kmem_cache_alloc_trace+0x117/0x2e0 [ 34.718667] [] ? security_load_policy+0x137/0x9b0 [ 34.725323] [] security_load_policy+0x264/0x9b0 [ 34.731621] [] ? security_get_bools+0x690/0x690 [ 34.737998] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 34.745088] [] ? __alloc_pages_nodemask+0x11df/0x1bd0 [ 34.751910] [] ? trace_hardirqs_on+0x10/0x10 [ 34.757953] [] ? gfp_pfmemalloc_allowed+0x110/0x110 [ 34.764772] [] ? vmap_page_range_noflush+0x512/0x770 [ 34.771558] [] ? alloc_vmap_area.isra.8+0x8d0/0x8d0 [ 34.778402] [] ? kasan_unpoison_shadow+0x35/0x50 [ 34.784815] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 34.791743] [] ? check_stack_object+0x110/0x150 [ 34.798041] [] ? __check_object_size+0x248/0x38e [ 34.804423] [] sel_write_load+0x19b/0xfa0 [ 34.810434] [] ? trace_hardirqs_on+0xd/0x10 [ 34.816523] [] ? sel_read_bool+0x240/0x240 [ 34.822398] [] ? trace_hardirqs_on+0x10/0x10 [ 34.828444] [] ? trace_hardirqs_on+0x10/0x10 [ 34.834489] [] __vfs_write+0x115/0x580 [ 34.840016] [] ? sel_read_bool+0x240/0x240 [ 34.846041] [] ? __vfs_read+0x560/0x560 [ 34.851654] [] ? handle_mm_fault+0x54b/0x2350 [ 34.857909] [] ? check_preemption_disabled+0x3b/0x200 [ 34.864744] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 34.871702] [] ? rcu_sync_lockdep_assert+0x73/0xb0 [ 34.878401] [] ? __sb_start_write+0x161/0x300 [ 34.884543] [] vfs_write+0x187/0x520 [ 34.889941] [] SyS_write+0xd9/0x1c0 [ 34.895205] [] ? SyS_read+0x1c0/0x1c0 [ 34.900713] [] ? do_syscall_64+0x48/0x550 [ 34.906671] [] ? SyS_read+0x1c0/0x1c0 [ 34.912160] [] do_syscall_64+0x19f/0x550 [ 34.917922] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 34.925412] Kernel Offset: disabled [ 34.929072] Rebooting in 86400 seconds..