[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [ 10.727584] random: sshd: uninitialized urandom read (32 bytes read) [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 12.885306] random: crng init done Warning: Permanently added '10.128.0.78' (ECDSA) to the list of known hosts. executing program [ 34.183631] ------------[ cut here ]------------ [ 34.184452] WARNING: CPU: 0 PID: 2054 at mm/page_alloc.c:3556 __alloc_pages_nodemask+0x13a0/0x1bd0 [ 34.185883] Kernel panic - not syncing: panic_on_warn set ... [ 34.185883] [ 34.187284] CPU: 0 PID: 2054 Comm: syz-executor568 Not tainted 4.9.141+ #23 [ 34.188834] ffff8801ce986f80 ffffffff81b42e79 ffffffff82a38ce0 00000000ffffffff [ 34.190040] ffffffff82a96600 0000000000000000 0000000000000009 ffff8801ce987040 [ 34.193017] ffffffff813f7125 0000000041b58ab3 ffffffff82e2b62b ffffffff813f6f66 [ 34.194433] Call Trace: [ 34.195035] [] dump_stack+0xc1/0x128 [ 34.195931] [] panic+0x1bf/0x39f [ 34.196789] [] ? add_taint.cold.5+0x16/0x16 [ 34.197768] [] ? __warn.cold.8+0x14/0x2f [ 34.198785] [] ? __alloc_pages_nodemask+0x13a0/0x1bd0 [ 34.200399] [] __warn.cold.8+0x2f/0x2f [ 34.201463] [] warn_slowpath_null+0x2c/0x40 [ 34.202451] [] __alloc_pages_nodemask+0x13a0/0x1bd0 [ 34.204303] [] ? kasan_kmalloc.part.1+0xc9/0xf0 [ 34.211167] [] ? kasan_kmalloc.part.1+0x62/0xf0 [ 34.217524] [] ? kmem_cache_alloc_trace+0x117/0x2e0 [ 34.224375] [] ? type_read+0xcf/0x410 [ 34.230312] [] ? gfp_pfmemalloc_allowed+0x110/0x110 [ 34.237151] [] ? vfs_write+0x187/0x520 [ 34.242811] [] ? SyS_write+0xd9/0x1c0 [ 34.249045] [] ? do_fast_syscall_32+0x2f1/0xa10 [ 34.256225] [] ? entry_SYSENTER_compat+0x90/0xa2 [ 34.262720] [] ? quarantine_put+0xd9/0x180 [ 34.268613] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 34.275443] [] ? trace_hardirqs_on+0xd/0x10 [ 34.281408] [] ? policydb_read+0x85e/0x2390 [ 34.287662] [] ? kasan_slab_free+0x119/0x190 [ 34.293768] [] ? save_stack_trace+0x16/0x20 [ 34.300310] [] ? kasan_slab_free+0xac/0x190 [ 34.306370] [] ? kfree+0xfb/0x310 [ 34.311556] [] ? policydb_read+0x85e/0x2390 [ 34.318107] [] ? security_load_policy+0x264/0x9b0 [ 34.324951] [] ? sel_write_load+0x19b/0xfa0 [ 34.330907] [] ? vfs_write+0x187/0x520 [ 34.337975] [] kmalloc_order+0x2a/0x70 [ 34.343528] [] kmalloc_order_trace+0x1f/0x190 [ 34.349972] [] __kmalloc+0x1ae/0x310 [ 34.355337] [] str_read+0x39/0x150 [ 34.360792] [] type_read+0x230/0x410 [ 34.366154] [] ? sens_read+0x360/0x360 [ 34.371778] [] ? debug_object_activate+0x4e0/0x4e0 [ 34.378612] [] ? kfree+0xdb/0x310 [ 34.383798] [] ? policydb_read+0x85e/0x2390 [ 34.389774] [] ? sens_read+0x360/0x360 [ 34.395718] [] policydb_read+0xdba/0x2390 [ 34.401773] [] ? trace_hardirqs_on+0x10/0x10 [ 34.407835] [] ? string_to_av_perm+0x90/0x90 [ 34.413885] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 34.420634] [] ? check_preemption_disabled+0x3b/0x200 [ 34.427522] [] ? kasan_unpoison_shadow+0x35/0x50 [ 34.433912] [] ? kasan_kmalloc+0xaf/0xc0 [ 34.439833] [] ? kmem_cache_alloc_trace+0x117/0x2e0 [ 34.447073] [] ? security_load_policy+0x137/0x9b0 [ 34.453922] [] security_load_policy+0x264/0x9b0 [ 34.460388] [] ? security_get_bools+0x690/0x690 [ 34.466881] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 34.473726] [] ? __alloc_pages_nodemask+0x11df/0x1bd0 [ 34.480611] [] ? trace_hardirqs_on+0x10/0x10 [ 34.487187] [] ? gfp_pfmemalloc_allowed+0x110/0x110 [ 34.494199] [] ? vmap_page_range_noflush+0x512/0x770 [ 34.501151] [] ? alloc_vmap_area.isra.8+0x8d0/0x8d0 [ 34.508072] [] ? kasan_unpoison_shadow+0x35/0x50 [ 34.514598] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 34.521385] [] ? check_stack_object+0x110/0x150 [ 34.527791] [] ? __check_object_size+0x248/0x38e [ 34.534228] [] sel_write_load+0x19b/0xfa0 [ 34.540090] [] ? trace_hardirqs_on+0xd/0x10 [ 34.546141] [] ? sel_read_bool+0x240/0x240 [ 34.552226] [] ? kasan_slab_free+0xac/0x190 [ 34.558277] [] ? kmem_cache_free+0xbe/0x310 [ 34.565306] [] ? trace_hardirqs_on+0x10/0x10 [ 34.571426] [] __vfs_write+0x115/0x580 [ 34.577328] [] ? sel_read_bool+0x240/0x240 [ 34.584210] [] ? __vfs_read+0x560/0x560 [ 34.589823] [] ? putname+0xdb/0x110 [ 34.595179] [] ? check_preemption_disabled+0x3b/0x200 [ 34.602247] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 34.609518] [] ? rcu_sync_lockdep_assert+0x73/0xb0 [ 34.616097] [] ? __sb_start_write+0x161/0x300 [ 34.622234] [] vfs_write+0x187/0x520 [ 34.627849] [] SyS_write+0xd9/0x1c0 [ 34.633161] [] ? SyS_read+0x1c0/0x1c0 [ 34.639159] [] ? do_fast_syscall_32+0xcf/0xa10 [ 34.645608] [] ? SyS_read+0x1c0/0x1c0 [ 34.651878] [] do_fast_syscall_32+0x2f1/0xa10 [ 34.658282] [] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.664949] [] entry_SYSENTER_compat+0x90/0xa2 [ 34.671928] Kernel Offset: disabled [ 34.675714] Rebooting in 86400 seconds..