[....] Starting enhanced syslogd: rsyslogd[ 12.595858] audit: type=1400 audit(1536362202.722:4): avc: denied { syslog } for pid=1919 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.3' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 31.177741] ------------[ cut here ]------------ [ 31.182636] WARNING: CPU: 1 PID: 2072 at mm/page_alloc.c:3069 __alloc_pages_nodemask+0x1139/0x1430() [ 31.192518] Kernel panic - not syncing: panic_on_warn set ... [ 31.192518] [ 31.199878] CPU: 1 PID: 2072 Comm: syz-executor429 Not tainted 4.4.154+ #33 [ 31.206954] 0000000000000000 dc0bc569f008a603 ffff8801d478ef88 ffffffff81a54fed [ 31.214941] ffffffff82835440 ffff8801d5f097c0 ffffffff828848e0 0000000000000009 [ 31.222936] 0000000000000bfd ffff8801d478f048 ffffffff8138a884 0000000041b58ab3 [ 31.230916] Call Trace: [ 31.233481] [] dump_stack+0xc1/0x124 [ 31.238836] [] panic+0x19e/0x359 [ 31.243827] [] ? add_taint.cold.4+0x16/0x16 [ 31.249774] [] ? warn_slowpath_common.cold.6+0x5/0x20 [ 31.256591] [] warn_slowpath_common.cold.6+0x20/0x20 [ 31.263317] [] ? __alloc_pages_nodemask+0x1139/0x1430 [ 31.270133] [] warn_slowpath_null+0x29/0x30 [ 31.276100] [] __alloc_pages_nodemask+0x1139/0x1430 [ 31.282748] [] ? kasan_kmalloc.part.1+0xc9/0xf0 [ 31.289047] [] ? save_stack_trace+0x26/0x50 [ 31.295000] [] ? kasan_kmalloc.part.1+0x62/0xf0 [ 31.301312] [] ? kasan_kmalloc+0xaf/0xc0 [ 31.307011] [] ? __kmalloc+0x13d/0x330 [ 31.312530] [] ? hashtab_create+0x120/0x210 [ 31.318484] [] ? policydb_read+0xdb1/0x2360 [ 31.324453] [] ? security_load_policy+0x264/0x9b0 [ 31.330926] [] ? vfs_write+0x17e/0x4e0 [ 31.336444] [] ? SyS_write+0xd9/0x1c0 [ 31.341873] [] ? __alloc_pages_direct_compact+0x220/0x220 [ 31.349044] [] ? common_read+0xad/0x380 [ 31.354644] [] ? policydb_read+0xcd0/0x2360 [ 31.360591] [] ? security_load_policy+0x264/0x9b0 [ 31.367057] [] ? sel_write_load+0x191/0xfc0 [ 31.373014] [] ? __vfs_write+0x11c/0x3e0 [ 31.378713] [] ? vfs_write+0x17e/0x4e0 [ 31.384222] [] ? SyS_write+0xd9/0x1c0 [ 31.389648] [] ? do_fast_syscall_32+0x31e/0x8b0 [ 31.395951] [] ? sysenter_flags_fixed+0xd/0x1a [ 31.402179] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 31.409015] [] ? trace_hardirqs_on+0xd/0x10 [ 31.414962] [] ? policydb_read+0x855/0x2360 [ 31.420921] [] ? kasan_slab_free+0x119/0x190 [ 31.426956] [] ? save_stack_trace+0x26/0x50 [ 31.432909] [] ? kfree+0xf4/0x310 [ 31.437989] [] ? check_preemption_disabled+0x3b/0x170 [ 31.444820] [] alloc_kmem_pages+0x12/0x20 [ 31.450596] [] kmalloc_order+0x1f/0x70 [ 31.456111] [] kmalloc_order_trace+0x1f/0x1a0 [ 31.462229] [] __kmalloc+0x1be/0x330 [ 31.467585] [] str_read+0x26/0x130 [ 31.472751] [] common_read+0x265/0x380 [ 31.478284] [] ? class_read+0x940/0x940 [ 31.483894] [] ? ebitmap_destroy+0x100/0x100 [ 31.489927] [] ? class_read+0x940/0x940 [ 31.495535] [] policydb_read+0xdb1/0x2360 [ 31.501307] [] ? trace_hardirqs_on+0x10/0x10 [ 31.507356] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 31.514257] [] ? string_to_av_perm+0x90/0x90 [ 31.520289] [] ? security_load_policy+0x137/0x9b0 [ 31.526755] [] ? check_preemption_disabled+0x3b/0x170 [ 31.533570] [] ? kasan_unpoison_shadow+0x35/0x50 [ 31.539954] [] ? kasan_kmalloc+0xaf/0xc0 [ 31.545641] [] ? kmem_cache_alloc_trace+0x117/0x2d0 [ 31.552282] [] security_load_policy+0x264/0x9b0 [ 31.558576] [] ? security_get_bools+0x690/0x690 [ 31.564870] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 31.571690] [] ? __alloc_pages_nodemask+0x40f/0x1430 [ 31.578419] [] ? sysenter_flags_fixed+0xd/0x1a [ 31.584648] [] ? alloc_vmap_area.isra.9+0x4a9/0x830 [ 31.591291] [] ? vmap_page_range_noflush+0x507/0x760 [ 31.598019] [] ? trace_hardirqs_on+0x10/0x10 [ 31.604051] [] ? alloc_vmap_area.isra.9+0x830/0x830 [ 31.610692] [] ? kasan_unpoison_shadow+0x35/0x50 [ 31.617070] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 31.623811] [] ? check_stack_object+0x110/0x150 [ 31.630104] [] ? __check_object_size+0x217/0x327 [ 31.636483] [] sel_write_load+0x191/0xfc0 [ 31.642254] [] ? trace_hardirqs_on+0xd/0x10 [ 31.648196] [] ? sel_read_bool+0x240/0x240 [ 31.654053] [] ? kasan_slab_free+0xac/0x190 [ 31.659998] [] ? kmem_cache_free+0xbe/0x340 [ 31.665948] [] ? debug_check_no_obj_freed+0x160/0x890 [ 31.672765] [] ? trace_hardirqs_on+0x10/0x10 [ 31.678817] [] __vfs_write+0x11c/0x3e0 [ 31.684345] [] ? sel_read_bool+0x240/0x240 [ 31.690245] [] ? __vfs_read+0x3d0/0x3d0 [ 31.695851] [] ? check_preemption_disabled+0x3b/0x170 [ 31.702677] [] ? check_preemption_disabled+0x3b/0x170 [ 31.709501] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 31.716326] [] ? rcu_sync_lockdep_assert+0x73/0xb0 [ 31.722883] [] ? __sb_start_write+0x14f/0x310 [ 31.729012] [] vfs_write+0x17e/0x4e0 [ 31.734361] [] SyS_write+0xd9/0x1c0 [ 31.739611] [] ? SyS_read+0x1c0/0x1c0 [ 31.745033] [] ? __do_page_fault+0x2b6/0x7e0 [ 31.751067] [] ? do_fast_syscall_32+0xdb/0x8b0 [ 31.757268] [] ? SyS_read+0x1c0/0x1c0 [ 31.762690] [] do_fast_syscall_32+0x31e/0x8b0 [ 31.768811] [] sysenter_flags_fixed+0xd/0x1a [ 31.775184] Dumping ftrace buffer: [ 31.778774] (ftrace buffer empty) [ 31.782459] Kernel Offset: disabled [ 31.786095] Rebooting in 86400 seconds..