[....] Starting enhanced syslogd: rsyslogd[ 14.062273] audit: type=1400 audit(1547044728.127:4): avc: denied { syslog } for pid=1918 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 OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.123' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 51.087292] ------------[ cut here ]------------ [ 51.092588] WARNING: CPU: 1 PID: 4315 at mm/page_alloc.c:3069 __alloc_pages_nodemask+0x11d7/0x14b0() [ 51.102608] Kernel panic - not syncing: panic_on_warn set ... [ 51.102608] [ 51.109987] CPU: 1 PID: 4315 Comm: syz-executor592 Not tainted 4.4.169+ #2 [ 51.116986] 0000000000000000 c1b971c30bfafee2 ffff8801d0af7198 ffffffff81aab9c1 [ 51.125087] 0000000000000000 ffffffff82835ee0 ffffffff828852a0 0000000000000bfd executing program [ 51.133199] ffffffff813d10e7 ffff8801d0af7278 ffffffff813a46d2 0000000041b58ab3 [ 51.141304] Call Trace: [ 51.143891] [] dump_stack+0xc1/0x120 [ 51.149263] [] ? __alloc_pages_nodemask+0x11d7/0x14b0 [ 51.156109] [] panic+0x1b9/0x37b [ 51.161125] [] ? add_taint.cold+0x16/0x16 [ 51.166925] [] ? warn_slowpath_common.cold+0x5/0x20 [ 51.173583] [] warn_slowpath_common.cold+0x20/0x20 [ 51.180160] [] warn_slowpath_null+0x2a/0x30 [ 51.186122] [] __alloc_pages_nodemask+0x11d7/0x14b0 [ 51.192788] [] ? kasan_kmalloc.part.0+0xc6/0xf0 [ 51.199096] [] ? save_stack_trace+0x26/0x50 [ 51.205078] [] ? kasan_kmalloc.part.0+0x62/0xf0 [ 51.211425] [] ? kasan_kmalloc+0xb7/0xd0 [ 51.217150] [] ? policydb_read+0xc3b/0x2280 [ 51.223115] [] ? security_load_policy+0x23c/0x9c0 [ 51.229602] [] ? sel_write_load+0x175/0xf90 [ 51.235582] [] ? vfs_write+0x182/0x4e0 [ 51.241112] [] ? __alloc_pages_direct_compact+0x220/0x220 [ 51.248296] [] ? trace_hardirqs_on_caller+0x2f0/0x5a0 [ 51.255157] [] ? trace_hardirqs_on+0xd/0x10 [ 51.261124] [] ? policydb_read+0x7dd/0x2280 [ 51.267100] [] ? kasan_slab_free+0xb0/0x190 [ 51.273072] [] ? kfree+0xf4/0x310 [ 51.278170] [] ? security_load_policy+0x23c/0x9c0 executing program [ 51.284654] [] ? user_read+0xc2/0x3f0 [ 51.290097] [] ? SyS_write+0xdc/0x1c0 [ 51.295567] [] alloc_kmem_pages+0x12/0x20 [ 51.301370] [] kmalloc_order+0x21/0x70 [ 51.306941] [] kmalloc_order_trace+0x1f/0x1a0 [ 51.313089] [] __kmalloc+0x1c2/0x330 [ 51.318460] [] str_read+0x2b/0x130 [ 51.323651] [] user_read+0x240/0x3f0 [ 51.329026] [] ? mls_read_range_helper+0x380/0x380 [ 51.335607] [] ? policydb_read+0x7dd/0x2280 [ 51.341567] [] policydb_read+0xc3b/0x2280 [ 51.347342] [] ? mark_held_locks+0xb1/0x100 [ 51.353311] [] ? get_page_from_freelist+0x9d8/0x1d00 [ 51.360041] [] ? mls_read_range_helper+0x380/0x380 [ 51.366626] [] ? string_to_av_perm+0x90/0x90 [ 51.372681] [] ? security_load_policy+0x103/0x9c0 [ 51.379161] [] ? check_preemption_disabled+0x3c/0x200 [ 51.386005] [] ? check_preemption_disabled+0x3c/0x200 [ 51.392823] [] ? kasan_unpoison_shadow+0x35/0x50 [ 51.399206] [] ? kasan_kmalloc+0xb7/0xd0 [ 51.404894] [] ? kmem_cache_alloc_trace+0x123/0x2d0 [ 51.411539] [] security_load_policy+0x23c/0x9c0 [ 51.417848] [] ? native_set_pgd+0x50/0x50 [ 51.423631] [] ? security_get_bools+0x610/0x610 [ 51.429931] [] ? vmap_page_range_noflush+0x517/0x780 [ 51.436668] [] ? trace_hardirqs_on+0x10/0x10 [ 51.442707] [] ? alloc_vmap_area.isra.0+0x810/0x810 [ 51.449350] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 51.456080] [] ? check_stack_object+0x114/0x160 [ 51.462382] [] ? __check_object_size+0x222/0x332 [ 51.468774] [] sel_write_load+0x175/0xf90 [ 51.474550] [] ? sel_read_bool+0x240/0x240 [ 51.480410] [] ? trace_hardirqs_on+0x10/0x10 [ 51.486445] [] __vfs_write+0x116/0x3d0 [ 51.491971] [] ? sel_read_bool+0x240/0x240 [ 51.497846] [] ? __vfs_read+0x3c0/0x3c0 [ 51.503446] [] ? check_preemption_disabled+0x3c/0x200 [ 51.510262] [] ? check_preemption_disabled+0x3c/0x200 [ 51.517080] [] ? rcu_read_lock_sched_held+0x10b/0x130 [ 51.523896] [] ? rcu_sync_lockdep_assert+0x73/0xb0 [ 51.530467] [] ? __sb_start_write+0x14f/0x310 [ 51.536588] [] vfs_write+0x182/0x4e0 [ 51.541929] [] SyS_write+0xdc/0x1c0 [ 51.547190] [] ? SyS_read+0x1c0/0x1c0 [ 51.552623] [] ? __do_page_fault+0x2b3/0x7f0 [ 51.558660] [] ? do_fast_syscall_32+0xd6/0xa90 [ 51.564867] [] ? SyS_read+0x1c0/0x1c0 [ 51.570297] [] do_fast_syscall_32+0x32d/0xa90 [ 51.576420] [] sysenter_flags_fixed+0xd/0x1a [ 51.582790] Kernel Offset: disabled [ 51.586435] Rebooting in 86400 seconds..