[....] Starting enhanced syslogd: rsyslogd[ 14.886087] audit: type=1400 audit(1560035254.418:4): avc: denied { syslog } for pid=1926 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 '10.128.0.214' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 41.981520] ------------[ cut here ]------------ [ 41.986522] WARNING: CPU: 0 PID: 2087 at mm/page_alloc.c:3069 __alloc_pages_nodemask+0x11d7/0x14b0() [ 41.996926] Kernel panic - not syncing: panic_on_warn set ... [ 41.996926] [ 42.004766] CPU: 0 PID: 2087 Comm: syz-executor153 Not tainted 4.4.174+ #17 [ 42.012387] 0000000000000000 7fc74abc4462eb21 ffff8801d40271a0 ffffffff81aad1a1 [ 42.020700] 0000000000000000 ffffffff82835ee0 ffffffff82885260 0000000000000bfd [ 42.028852] ffffffff813d12d7 ffff8801d4027280 ffffffff813a48c2 0000000041b58ab3 [ 42.037063] Call Trace: [ 42.039786] [] dump_stack+0xc1/0x120 [ 42.045374] [] ? __alloc_pages_nodemask+0x11d7/0x14b0 [ 42.052525] [] panic+0x1b9/0x37b [ 42.058340] [] ? add_taint.cold+0x16/0x16 [ 42.064502] [] ? warn_slowpath_common.cold+0x5/0x20 [ 42.071204] [] warn_slowpath_common.cold+0x20/0x20 [ 42.078139] [] warn_slowpath_null+0x2a/0x30 [ 42.084213] [] __alloc_pages_nodemask+0x11d7/0x14b0 [ 42.091001] [] ? kasan_kmalloc.part.0+0xc6/0xf0 [ 42.097553] [] ? save_stack_trace+0x26/0x50 [ 42.103645] [] ? kasan_kmalloc.part.0+0x62/0xf0 [ 42.110389] [] ? kasan_kmalloc+0xb7/0xd0 [ 42.116642] [] ? policydb_read+0xc3b/0x2280 [ 42.123998] [] ? security_load_policy+0x23c/0x9c0 [ 42.131883] [] ? sel_write_load+0x175/0xf90 [ 42.138818] [] ? vfs_write+0x182/0x4e0 [ 42.144977] [] ? __alloc_pages_direct_compact+0x220/0x220 [ 42.152811] [] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 42.159731] [] ? trace_hardirqs_on+0xd/0x10 [ 42.166073] [] ? policydb_read+0x7dd/0x2280 [ 42.172896] [] ? kasan_slab_free+0x11a/0x190 [ 42.179153] [] ? kfree+0xf4/0x310 [ 42.185103] [] ? policydb_read+0x7dd/0x2280 [ 42.191416] [] ? security_load_policy+0x23c/0x9c0 [ 42.198261] [] ? sel_write_load+0x175/0xf90 [ 42.204724] [] ? __vfs_write+0x116/0x3d0 [ 42.211198] [] ? vfs_write+0x182/0x4e0 [ 42.217019] [] ? SyS_write+0xdc/0x1c0 [ 42.224058] [] ? do_fast_syscall_32+0x32d/0xa90 [ 42.231701] [] alloc_kmem_pages+0x12/0x20 [ 42.239395] [] kmalloc_order+0x21/0x70 [ 42.245209] [] kmalloc_order_trace+0x1f/0x1a0 [ 42.252477] [] __kmalloc+0x1c2/0x330 [ 42.257853] [] str_read+0x2b/0x130 [ 42.263245] [] role_read+0x23f/0x400 [ 42.269908] [] ? type_read+0x410/0x410 [ 42.275435] [] ? policydb_read+0x7dd/0x2280 [ 42.281899] [] policydb_read+0xc3b/0x2280 [ 42.287716] [] ? mark_held_locks+0xb1/0x100 [ 42.293854] [] ? get_page_from_freelist+0x9d8/0x1d00 [ 42.300975] [] ? type_read+0x410/0x410 [ 42.306883] [] ? string_to_av_perm+0x90/0x90 [ 42.312941] [] ? security_load_policy+0x103/0x9c0 [ 42.319690] [] ? check_preemption_disabled+0x3c/0x200 [ 42.327368] [] ? check_preemption_disabled+0x3c/0x200 [ 42.334923] [] ? kasan_unpoison_shadow+0x35/0x50 [ 42.341720] [] ? kasan_kmalloc+0xb7/0xd0 [ 42.347920] [] ? kmem_cache_alloc_trace+0x123/0x2d0 [ 42.354612] [] security_load_policy+0x23c/0x9c0 [ 42.361018] [] ? native_set_pgd+0x50/0x50 [ 42.366941] [] ? security_get_bools+0x610/0x610 [ 42.373725] [] ? vmap_page_range_noflush+0x517/0x780 [ 42.381387] [] ? trace_hardirqs_on+0x10/0x10 [ 42.387902] [] ? alloc_vmap_area.isra.0+0x810/0x810 [ 42.394590] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 42.401732] [] ? check_stack_object+0x114/0x160 [ 42.408926] [] ? __check_object_size+0x222/0x332 [ 42.416454] [] sel_write_load+0x175/0xf90 [ 42.422486] [] ? debug_check_no_obj_freed+0x159/0x6e0 [ 42.429545] [] ? sel_read_bool+0x240/0x240 [ 42.435977] [] ? _raw_spin_unlock_irqrestore+0x5a/0x70 [ 42.443126] [] ? trace_hardirqs_on+0x10/0x10 [ 42.449465] [] ? debug_check_no_obj_freed+0x2b9/0x6e0 [ 42.457137] [] __vfs_write+0x116/0x3d0 [ 42.462942] [] ? sel_read_bool+0x240/0x240 [ 42.469272] [] ? __vfs_read+0x3c0/0x3c0 [ 42.475297] [] ? check_preemption_disabled+0x3c/0x200 [ 42.482368] [] ? check_preemption_disabled+0x3c/0x200 [ 42.490494] [] ? rcu_read_lock_sched_held+0x10b/0x130 [ 42.501376] [] ? rcu_sync_lockdep_assert+0x73/0xb0 [ 42.509151] [] ? __sb_start_write+0x14f/0x310 [ 42.518387] [] vfs_write+0x182/0x4e0 [ 42.525065] [] SyS_write+0xdc/0x1c0 [ 42.530599] [] ? SyS_read+0x1c0/0x1c0 [ 42.536191] [] ? __do_page_fault+0x2b3/0x7f0 [ 42.542860] [] ? do_fast_syscall_32+0xd6/0xa90 [ 42.551221] [] ? SyS_read+0x1c0/0x1c0 [ 42.560144] [] do_fast_syscall_32+0x32d/0xa90 [ 42.569196] [] sysenter_flags_fixed+0xd/0x1a [ 42.576396] Kernel Offset: disabled [ 42.580405] Rebooting in 86400 seconds..