[....] Starting enhanced syslogd: rsyslogd[ 15.992117] audit: type=1400 audit(1560033513.629:4): avc: denied { syslog } for pid=1923 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[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] 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 Warning: Permanently added '10.128.1.57' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 37.555046] ------------[ cut here ]------------ [ 37.559875] WARNING: CPU: 1 PID: 2081 at mm/page_alloc.c:3069 __alloc_pages_nodemask+0x11d7/0x14b0() [ 37.569302] Kernel panic - not syncing: panic_on_warn set ... [ 37.569302] [ 37.576665] CPU: 1 PID: 2081 Comm: syz-executor544 Not tainted 4.4.174+ #4 [ 37.583668] 0000000000000000 0ef8de62e8ad2d5e ffff8800b69af220 ffffffff81aad1a1 [ 37.591664] 0000000000000000 ffffffff82835ee0 ffffffff82885260 0000000000000bfd [ 37.599673] ffffffff813d12d7 ffff8800b69af300 ffffffff813a48c2 0000000041b58ab3 [ 37.607683] Call Trace: [ 37.610267] [] dump_stack+0xc1/0x120 [ 37.615610] [] ? __alloc_pages_nodemask+0x11d7/0x14b0 [ 37.622424] [] panic+0x1b9/0x37b [ 37.627415] [] ? add_taint.cold+0x16/0x16 [ 37.633194] [] ? warn_slowpath_common.cold+0x5/0x20 [ 37.639844] [] warn_slowpath_common.cold+0x20/0x20 [ 37.646535] [] warn_slowpath_null+0x2a/0x30 [ 37.652484] [] __alloc_pages_nodemask+0x11d7/0x14b0 [ 37.659156] [] ? kasan_kmalloc.part.0+0xc6/0xf0 [ 37.665457] [] ? save_stack_trace+0x26/0x50 [ 37.671405] [] ? kasan_kmalloc.part.0+0x62/0xf0 [ 37.677789] [] ? kasan_kmalloc+0xb7/0xd0 [ 37.683487] [] ? policydb_read+0xc3b/0x2280 [ 37.689450] [] ? security_load_policy+0x23c/0x9c0 [ 37.695926] [] ? sel_write_load+0x175/0xf90 [ 37.701879] [] ? vfs_write+0x182/0x4e0 [ 37.707415] [] ? __alloc_pages_direct_compact+0x220/0x220 [ 37.714619] [] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 37.721452] [] ? trace_hardirqs_on+0xd/0x10 [ 37.727407] [] ? policydb_read+0x7dd/0x2280 [ 37.733373] [] ? kasan_slab_free+0x11a/0x190 [ 37.739409] [] ? kfree+0xf4/0x310 [ 37.744591] [] ? policydb_read+0x7dd/0x2280 [ 37.750557] [] ? security_load_policy+0x23c/0x9c0 [ 37.757036] [] ? sel_write_load+0x175/0xf90 [ 37.763007] [] ? __vfs_write+0x116/0x3d0 [ 37.768696] [] ? vfs_write+0x182/0x4e0 [ 37.774212] [] ? SyS_write+0xdc/0x1c0 [ 37.779667] [] ? entry_SYSCALL_64_fastpath+0x1e/0x9a [ 37.786431] [] alloc_kmem_pages+0x12/0x20 [ 37.792208] [] kmalloc_order+0x21/0x70 [ 37.797739] [] kmalloc_order_trace+0x1f/0x1a0 [ 37.803876] [] __kmalloc+0x1c2/0x330 [ 37.809219] [] str_read+0x2b/0x130 [ 37.814396] [] role_read+0x23f/0x400 [ 37.819739] [] ? type_read+0x410/0x410 [ 37.825276] [] ? policydb_read+0x7dd/0x2280 [ 37.831229] [] policydb_read+0xc3b/0x2280 [ 37.837009] [] ? mark_held_locks+0xb1/0x100 [ 37.842959] [] ? get_page_from_freelist+0x9d8/0x1d00 [ 37.849688] [] ? type_read+0x410/0x410 [ 37.855287] [] ? string_to_av_perm+0x90/0x90 [ 37.861354] [] ? mark_held_locks+0xb1/0x100 [ 37.867446] [] ? check_preemption_disabled+0x3c/0x200 [ 37.874262] [] ? check_preemption_disabled+0x3c/0x200 [ 37.881089] [] ? kasan_kmalloc+0xb7/0xd0 [ 37.886785] [] ? kmem_cache_alloc_trace+0x123/0x2d0 [ 37.893468] [] security_load_policy+0x23c/0x9c0 [ 37.899768] [] ? native_set_pgd+0x50/0x50 [ 37.905547] [] ? security_get_bools+0x610/0x610 [ 37.911847] [] ? vmap_page_range_noflush+0x517/0x780 [ 37.918588] [] ? alloc_vmap_area.isra.0+0x810/0x810 [ 37.925267] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 37.932004] [] ? check_stack_object+0x114/0x160 [ 37.938312] [] ? __check_object_size+0x222/0x332 [ 37.944711] [] sel_write_load+0x175/0xf90 [ 37.950515] [] ? debug_check_no_obj_freed+0x159/0x6e0 [ 37.957338] [] ? sel_read_bool+0x240/0x240 [ 37.963202] [] ? trace_hardirqs_on+0x10/0x10 [ 37.969241] [] ? debug_check_no_obj_freed+0x2b9/0x6e0 [ 37.976062] [] __vfs_write+0x116/0x3d0 [ 37.981599] [] ? sel_read_bool+0x240/0x240 [ 37.987462] [] ? __vfs_read+0x3c0/0x3c0 [ 37.993081] [] ? check_preemption_disabled+0x3c/0x200 [ 37.999903] [] ? check_preemption_disabled+0x3c/0x200 [ 38.006721] [] ? rcu_read_lock_sched_held+0x10b/0x130 [ 38.013560] [] ? rcu_sync_lockdep_assert+0x73/0xb0 [ 38.020138] [] ? __sb_start_write+0x14f/0x310 [ 38.026261] [] vfs_write+0x182/0x4e0 [ 38.031622] [] SyS_write+0xdc/0x1c0 [ 38.036881] [] ? SyS_read+0x1c0/0x1c0 [ 38.042325] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 38.049155] [] entry_SYSCALL_64_fastpath+0x1e/0x9a [ 38.057672] Kernel Offset: disabled [ 38.061312] Rebooting in 86400 seconds..