Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 9.304194] 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: [ 33.712162] random: sshd: uninitialized urandom read (32 bytes read) [ 34.186257] random: sshd: uninitialized urandom read (32 bytes read) [ 34.456614] random: crng init done Warning: Permanently added '10.128.0.33' (ECDSA) to the list of known hosts. executing program [ 40.542604] ------------[ cut here ]------------ [ 40.547502] WARNING: CPU: 0 PID: 2056 at mm/page_alloc.c:3556 __alloc_pages_nodemask+0x13a0/0x1bd0 [ 40.556779] Kernel panic - not syncing: panic_on_warn set ... [ 40.556779] [ 40.564136] CPU: 0 PID: 2056 Comm: syz-executor421 Not tainted 4.9.141+ #1 [ 40.571127] ffff8801ce736f70 ffffffff81b42e79 ffffffff82a38ce0 00000000ffffffff [ 40.579146] ffffffff82a96600 0000000000000000 0000000000000009 ffff8801ce737030 [ 40.587259] ffffffff813f7125 0000000041b58ab3 ffffffff82e2b62b ffffffff813f6f66 [ 40.595287] Call Trace: [ 40.597858] [] dump_stack+0xc1/0x128 [ 40.603280] [] panic+0x1bf/0x39f [ 40.608369] [] ? add_taint.cold.5+0x16/0x16 [ 40.614583] [] ? __warn.cold.8+0x14/0x2f [ 40.620280] [] ? __alloc_pages_nodemask+0x13a0/0x1bd0 [ 40.627100] [] __warn.cold.8+0x2f/0x2f [ 40.632758] [] warn_slowpath_null+0x2c/0x40 [ 40.638722] [] __alloc_pages_nodemask+0x13a0/0x1bd0 [ 40.645376] [] ? save_stack_trace+0x16/0x20 [ 40.651499] [] ? kasan_kmalloc.part.1+0x62/0xf0 [ 40.657808] [] ? kasan_kmalloc+0xaf/0xc0 [ 40.663590] [] ? __kmalloc+0x12f/0x310 [ 40.669107] [] ? hashtab_create+0x120/0x210 [ 40.675184] [] ? class_read+0x200/0x940 [ 40.680798] [] ? policydb_read+0xdba/0x2390 [ 40.686758] [] ? security_load_policy+0x264/0x9b0 [ 40.693235] [] ? sel_write_load+0x19b/0xfa0 [ 40.699183] [] ? __vfs_write+0x115/0x580 [ 40.704871] [] ? vfs_write+0x187/0x520 [ 40.710596] [] ? do_syscall_64+0x19f/0x550 [ 40.716466] [] ? class_read+0xd2/0x940 [ 40.721986] [] ? gfp_pfmemalloc_allowed+0x110/0x110 [ 40.728627] [] ? vfs_write+0x187/0x520 [ 40.734139] [] ? SyS_write+0xd9/0x1c0 [ 40.739623] [] ? do_syscall_64+0x19f/0x550 [ 40.745779] [] ? entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 40.752899] [] ? mark_held_locks+0xc7/0x130 [ 40.758864] [] ? quarantine_put+0xd9/0x180 [ 40.764771] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 40.771688] [] ? check_preemption_disabled+0x3b/0x200 [ 40.778554] [] kmalloc_order+0x2a/0x70 [ 40.784098] [] kmalloc_order_trace+0x1f/0x190 [ 40.790254] [] __kmalloc+0x1ae/0x310 [ 40.795611] [] ? symcmp+0x30/0x30 [ 40.800702] [] str_read+0x39/0x150 [ 40.805878] [] class_read+0x2c3/0x940 [ 40.811305] [] ? perm_read.isra.7+0x2b0/0x2b0 [ 40.817426] [] ? debug_object_activate+0x4e0/0x4e0 [ 40.823996] [] ? kfree+0xdb/0x310 [ 40.829092] [] ? policydb_read+0x85e/0x2390 [ 40.835042] [] ? perm_read.isra.7+0x2b0/0x2b0 [ 40.841368] [] policydb_read+0xdba/0x2390 [ 40.847157] [] ? unwind_next_frame+0x7d/0xd0 [ 40.853209] [] ? __save_stack_trace+0x7d/0xf0 [ 40.859352] [] ? string_to_av_perm+0x90/0x90 [ 40.865452] [] ? kasan_kmalloc+0xaf/0xc0 [ 40.871153] [] ? kmem_cache_alloc_trace+0x117/0x2e0 [ 40.877803] [] ? check_preemption_disabled+0x3b/0x200 [ 40.884635] [] ? kasan_unpoison_shadow+0x35/0x50 [ 40.891025] [] ? kasan_kmalloc+0xaf/0xc0 [ 40.896995] [] ? kmem_cache_alloc_trace+0x117/0x2e0 [ 40.903651] [] ? security_load_policy+0x137/0x9b0 [ 40.910124] [] security_load_policy+0x264/0x9b0 [ 40.916422] [] ? security_get_bools+0x690/0x690 [ 40.922720] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 40.929538] [] ? __alloc_pages_nodemask+0x11df/0x1bd0 [ 40.936453] [] ? trace_hardirqs_on+0x10/0x10 [ 40.942511] [] ? gfp_pfmemalloc_allowed+0x110/0x110 [ 40.949317] [] ? vmap_page_range_noflush+0x512/0x770 [ 40.956087] [] ? alloc_vmap_area.isra.8+0x8d0/0x8d0 [ 40.962742] [] ? kasan_unpoison_shadow+0x35/0x50 [ 40.969218] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 40.977838] [] ? check_stack_object+0x110/0x150 [ 40.984200] [] ? __check_object_size+0x248/0x38e [ 40.990598] [] sel_write_load+0x19b/0xfa0 [ 40.996378] [] ? trace_hardirqs_on+0xd/0x10 [ 41.002452] [] ? sel_read_bool+0x240/0x240 [ 41.008317] [] ? kasan_slab_free+0xac/0x190 [ 41.014263] [] ? kmem_cache_free+0xbe/0x310 [ 41.020274] [] ? trace_hardirqs_on+0x10/0x10 [ 41.026330] [] __vfs_write+0x115/0x580 [ 41.031867] [] ? sel_read_bool+0x240/0x240 [ 41.037737] [] ? __vfs_read+0x560/0x560 [ 41.043346] [] ? putname+0xdb/0x110 [ 41.048620] [] ? check_preemption_disabled+0x3b/0x200 [ 41.055446] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 41.062356] [] ? rcu_sync_lockdep_assert+0x73/0xb0 [ 41.068945] [] ? __sb_start_write+0x161/0x300 [ 41.075080] [] vfs_write+0x187/0x520 [ 41.080434] [] SyS_write+0xd9/0x1c0 [ 41.085699] [] ? SyS_read+0x1c0/0x1c0 [ 41.091135] [] ? do_syscall_64+0x48/0x550 [ 41.096926] [] ? SyS_read+0x1c0/0x1c0 [ 41.102358] [] do_syscall_64+0x19f/0x550 [ 41.108065] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 41.115406] Kernel Offset: disabled [ 41.119052] Rebooting in 86400 seconds..