Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 10.358493] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 49.430647] random: sshd: uninitialized urandom read (32 bytes read) [ 49.442904] random: crng init done Warning: Permanently added '10.128.0.142' (ECDSA) to the list of known hosts. executing program [ 63.361281] ------------[ cut here ]------------ [ 63.366097] WARNING: CPU: 1 PID: 2071 at mm/page_alloc.c:3556 __alloc_pages_nodemask+0x13a0/0x1bd0 [ 63.375760] Kernel panic - not syncing: panic_on_warn set ... [ 63.375760] [ 63.383177] CPU: 1 PID: 2071 Comm: syz-executor524 Not tainted 4.9.141+ #1 [ 63.390172] ffff8801ce026f90 ffffffff81b42e79 ffffffff82a38ce0 00000000ffffffff [ 63.398172] ffffffff82a96600 0000000000000001 0000000000000009 ffff8801ce027050 [ 63.406184] ffffffff813f7125 0000000041b58ab3 ffffffff82e2b62b ffffffff813f6f66 [ 63.414179] Call Trace: [ 63.416746] [] dump_stack+0xc1/0x128 [ 63.422088] [] panic+0x1bf/0x39f [ 63.427085] [] ? add_taint.cold.5+0x16/0x16 [ 63.433040] [] ? __warn.cold.8+0x14/0x2f [ 63.438730] [] ? __alloc_pages_nodemask+0x13a0/0x1bd0 [ 63.445606] [] __warn.cold.8+0x2f/0x2f [ 63.451133] [] warn_slowpath_null+0x2c/0x40 [ 63.457093] [] __alloc_pages_nodemask+0x13a0/0x1bd0 [ 63.463861] [] ? kasan_kmalloc.part.1+0xc9/0xf0 [ 63.470157] [] ? kasan_kmalloc.part.1+0x62/0xf0 [ 63.476494] [] ? kmem_cache_alloc_trace+0x117/0x2e0 [ 63.483147] [] ? role_read+0xcf/0x3e0 [ 63.488576] [] ? gfp_pfmemalloc_allowed+0x110/0x110 [ 63.495236] [] ? vfs_write+0x187/0x520 [ 63.500754] [] ? SyS_write+0xd9/0x1c0 [ 63.506260] [] ? do_syscall_64+0x19f/0x550 [ 63.512132] [] ? entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 63.519213] [] ? quarantine_put+0xd9/0x180 [ 63.525080] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 63.531898] [] ? trace_hardirqs_on+0xd/0x10 [ 63.537845] [] ? policydb_read+0x85e/0x2390 [ 63.543796] [] ? kasan_slab_free+0x119/0x190 [ 63.549831] [] ? save_stack_trace+0x16/0x20 [ 63.555783] [] ? kasan_slab_free+0xac/0x190 [ 63.561881] [] ? kfree+0xfb/0x310 [ 63.566961] [] ? policydb_read+0x85e/0x2390 [ 63.572978] [] ? security_load_policy+0x264/0x9b0 [ 63.579454] [] ? sel_write_load+0x19b/0xfa0 [ 63.585407] [] ? vfs_write+0x187/0x520 [ 63.590970] [] kmalloc_order+0x2a/0x70 [ 63.596497] [] kmalloc_order_trace+0x1f/0x190 [ 63.602691] [] __kmalloc+0x1ae/0x310 [ 63.608128] [] str_read+0x39/0x150 [ 63.613307] [] role_read+0x238/0x3e0 [ 63.618663] [] ? type_read+0x410/0x410 [ 63.624185] [] ? debug_object_activate+0x4e0/0x4e0 [ 63.630746] [] ? kfree+0xdb/0x310 [ 63.635833] [] ? policydb_read+0x85e/0x2390 [ 63.641786] [] ? type_read+0x410/0x410 [ 63.647298] [] policydb_read+0xdba/0x2390 [ 63.659507] [] ? unwind_next_frame+0x7d/0xd0 [ 63.665544] [] ? __save_stack_trace+0x7d/0xf0 [ 63.671669] [] ? string_to_av_perm+0x90/0x90 [ 63.677712] [] ? kmem_cache_alloc_trace+0x117/0x2e0 [ 63.684360] [] ? security_load_policy+0x137/0x9b0 [ 63.690836] [] ? mark_held_locks+0xc7/0x130 [ 63.696785] [] ? check_preemption_disabled+0x3b/0x200 [ 63.703600] [] ? kasan_unpoison_shadow+0x35/0x50 [ 63.709985] [] ? kasan_kmalloc+0xaf/0xc0 [ 63.715705] [] ? kmem_cache_alloc_trace+0x117/0x2e0 [ 63.722384] [] ? security_load_policy+0x137/0x9b0 [ 63.728857] [] security_load_policy+0x264/0x9b0 [ 63.735154] [] ? security_get_bools+0x690/0x690 [ 63.741458] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 63.748279] [] ? __alloc_pages_nodemask+0x11df/0x1bd0 [ 63.755257] [] ? trace_hardirqs_on+0x10/0x10 [ 63.761298] [] ? gfp_pfmemalloc_allowed+0x110/0x110 [ 63.767951] [] ? vmap_page_range_noflush+0x512/0x770 [ 63.774685] [] ? alloc_vmap_area.isra.8+0x8d0/0x8d0 [ 63.781435] [] ? kasan_unpoison_shadow+0x35/0x50 [ 63.787819] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 63.794675] [] ? check_stack_object+0x110/0x150 [ 63.800975] [] ? __check_object_size+0x248/0x38e [ 63.807365] [] sel_write_load+0x19b/0xfa0 [ 63.813150] [] ? trace_hardirqs_on+0xd/0x10 [ 63.819100] [] ? sel_read_bool+0x240/0x240 [ 63.825070] [] ? kasan_slab_free+0xac/0x190 [ 63.831021] [] ? kmem_cache_free+0xbe/0x310 [ 63.836979] [] ? trace_hardirqs_on+0x10/0x10 [ 63.843018] [] __vfs_write+0x115/0x580 [ 63.848534] [] ? sel_read_bool+0x240/0x240 [ 63.854503] [] ? __vfs_read+0x560/0x560 [ 63.860109] [] ? putname+0xdb/0x110 [ 63.865371] [] ? check_preemption_disabled+0x3b/0x200 [ 63.872248] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 63.879075] [] ? rcu_sync_lockdep_assert+0x73/0xb0 [ 63.885736] [] ? __sb_start_write+0x161/0x300 [ 63.891968] [] vfs_write+0x187/0x520 [ 63.897313] [] SyS_write+0xd9/0x1c0 [ 63.902575] [] ? SyS_read+0x1c0/0x1c0 [ 63.908005] [] ? do_syscall_64+0x48/0x550 [ 63.913782] [] ? SyS_read+0x1c0/0x1c0 [ 63.919218] [] do_syscall_64+0x19f/0x550 [ 63.924913] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 63.932332] Kernel Offset: disabled [ 63.935960] Rebooting in 86400 seconds..