[....] Starting enhanced syslogd: rsyslogd[ 14.816170] audit: type=1400 audit(1563665799.699:4): avc: denied { syslog } for pid=1922 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 mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] 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 '10.128.0.5' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 35.416529] ------------[ cut here ]------------ [ 35.421466] WARNING: CPU: 0 PID: 2074 at mm/page_alloc.c:3069 __alloc_pages_nodemask+0x11d7/0x14b0() [ 35.431050] Kernel panic - not syncing: panic_on_warn set ... [ 35.431050] [ 35.438429] CPU: 0 PID: 2074 Comm: syz-executor730 Not tainted 4.4.174+ #17 [ 35.445794] 0000000000000000 0b7db497a09683e2 ffff8800b68771a0 ffffffff81aad1a1 [ 35.453844] 0000000000000000 ffffffff82835ee0 ffffffff82885260 0000000000000bfd [ 35.461861] ffffffff813d12d7 ffff8800b6877280 ffffffff813a48c2 0000000041b58ab3 [ 35.469940] Call Trace: [ 35.472517] [] dump_stack+0xc1/0x120 [ 35.477871] [] ? __alloc_pages_nodemask+0x11d7/0x14b0 [ 35.484717] [] panic+0x1b9/0x37b [ 35.489931] [] ? add_taint.cold+0x16/0x16 [ 35.495730] [] ? warn_slowpath_common.cold+0x5/0x20 [ 35.502387] [] warn_slowpath_common.cold+0x20/0x20 [ 35.508982] [] warn_slowpath_null+0x2a/0x30 [ 35.514973] [] __alloc_pages_nodemask+0x11d7/0x14b0 [ 35.522744] [] ? kasan_kmalloc.part.0+0xc6/0xf0 [ 35.529081] [] ? save_stack_trace+0x26/0x50 [ 35.535066] [] ? kasan_kmalloc.part.0+0x62/0xf0 [ 35.541671] [] ? kasan_kmalloc+0xb7/0xd0 [ 35.547379] [] ? policydb_read+0xc3b/0x2280 [ 35.553361] [] ? security_load_policy+0x23c/0x9c0 [ 35.559864] [] ? sel_write_load+0x175/0xf90 [ 35.565946] [] ? vfs_write+0x182/0x4e0 [ 35.571512] [] ? __alloc_pages_direct_compact+0x220/0x220 [ 35.578703] [] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 35.585531] [] ? trace_hardirqs_on+0xd/0x10 [ 35.591533] [] ? policydb_read+0x7dd/0x2280 [ 35.597828] [] ? kasan_slab_free+0x11a/0x190 [ 35.603877] [] ? kfree+0xf4/0x310 [ 35.608996] [] ? policydb_read+0x7dd/0x2280 [ 35.616170] [] ? security_load_policy+0x23c/0x9c0 [ 35.622753] [] ? sel_write_load+0x175/0xf90 [ 35.628722] [] ? __vfs_write+0x116/0x3d0 [ 35.634427] [] ? vfs_write+0x182/0x4e0 [ 35.639958] [] ? SyS_write+0xdc/0x1c0 [ 35.645674] [] ? do_fast_syscall_32+0x32d/0xa90 [ 35.652340] [] alloc_kmem_pages+0x12/0x20 [ 35.658129] [] kmalloc_order+0x21/0x70 [ 35.663658] [] kmalloc_order_trace+0x1f/0x1a0 [ 35.669821] [] __kmalloc+0x1c2/0x330 [ 35.675194] [] str_read+0x2b/0x130 [ 35.680398] [] type_read+0x223/0x410 [ 35.685756] [] ? sens_read+0x360/0x360 [ 35.691289] [] ? policydb_read+0x7dd/0x2280 [ 35.697250] [] policydb_read+0xc3b/0x2280 [ 35.703055] [] ? mark_held_locks+0xb1/0x100 [ 35.709019] [] ? get_page_from_freelist+0x9d8/0x1d00 [ 35.715857] [] ? sens_read+0x360/0x360 [ 35.722328] [] ? string_to_av_perm+0x90/0x90 [ 35.728406] [] ? security_load_policy+0x103/0x9c0 [ 35.734901] [] ? check_preemption_disabled+0x3c/0x200 [ 35.741734] [] ? check_preemption_disabled+0x3c/0x200 [ 35.748566] [] ? kasan_unpoison_shadow+0x35/0x50 [ 35.755054] [] ? kasan_kmalloc+0xb7/0xd0 [ 35.760755] [] ? kmem_cache_alloc_trace+0x123/0x2d0 [ 35.767417] [] security_load_policy+0x23c/0x9c0 [ 35.773727] [] ? native_set_pgd+0x50/0x50 [ 35.779518] [] ? security_get_bools+0x610/0x610 [ 35.785847] [] ? vmap_page_range_noflush+0x517/0x780 [ 35.792597] [] ? trace_hardirqs_on+0x10/0x10 [ 35.798650] [] ? alloc_vmap_area.isra.0+0x810/0x810 [ 35.805325] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 35.812070] [] ? check_stack_object+0x114/0x160 [ 35.818382] [] ? __check_object_size+0x222/0x332 [ 35.824785] [] sel_write_load+0x175/0xf90 [ 35.830579] [] ? debug_check_no_obj_freed+0x159/0x6e0 [ 35.838815] [] ? sel_read_bool+0x240/0x240 [ 35.844691] [] ? _raw_spin_unlock_irqrestore+0x5a/0x70 [ 35.851724] [] ? trace_hardirqs_on+0x10/0x10 [ 35.857788] [] ? debug_check_no_obj_freed+0x2b9/0x6e0 [ 35.864640] [] __vfs_write+0x116/0x3d0 [ 35.870169] [] ? sel_read_bool+0x240/0x240 [ 35.876048] [] ? __vfs_read+0x3c0/0x3c0 [ 35.881673] [] ? check_preemption_disabled+0x3c/0x200 [ 35.888533] [] ? check_preemption_disabled+0x3c/0x200 [ 35.895393] [] ? rcu_read_lock_sched_held+0x10b/0x130 [ 35.902399] [] ? rcu_sync_lockdep_assert+0x73/0xb0 [ 35.908987] [] ? __sb_start_write+0x14f/0x310 [ 35.915214] [] vfs_write+0x182/0x4e0 [ 35.920662] [] SyS_write+0xdc/0x1c0 [ 35.932576] [] ? SyS_read+0x1c0/0x1c0 [ 35.938031] [] ? __do_page_fault+0x2b3/0x7f0 [ 35.944172] [] ? do_fast_syscall_32+0xd6/0xa90 [ 35.950396] [] ? SyS_read+0x1c0/0x1c0 [ 35.956263] [] do_fast_syscall_32+0x32d/0xa90 [ 35.962408] [] sysenter_flags_fixed+0xd/0x1a [ 35.968938] Kernel Offset: disabled [ 35.972614] Rebooting in 86400 seconds..