[....] Starting enhanced syslogd: rsyslogd[ 14.196926] audit: type=1400 audit(1572542115.176:4): 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[1G[[32m ok [39;49m8[?25h[?0c. Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.249' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 30.977677] ------------[ cut here ]------------ [ 30.982517] WARNING: CPU: 0 PID: 2070 at mm/page_alloc.c:3069 __alloc_pages_nodemask+0x11d7/0x14b0() [ 30.992650] Kernel panic - not syncing: panic_on_warn set ... [ 30.992650] [ 31.000002] CPU: 0 PID: 2070 Comm: syz-executor730 Not tainted 4.4.174+ #17 [ 31.007163] 0000000000000000 235f7ed9b6baac05 ffff8800b6a27198 ffffffff81aad1a1 [ 31.015166] 0000000000000000 ffffffff82835ee0 ffffffff82885260 0000000000000bfd [ 31.023176] ffffffff813d12d7 ffff8800b6a27278 ffffffff813a48c2 0000000041b58ab3 [ 31.031185] Call Trace: [ 31.033753] [] dump_stack+0xc1/0x120 [ 31.039094] [] ? __alloc_pages_nodemask+0x11d7/0x14b0 [ 31.045912] [] panic+0x1b9/0x37b [ 31.050903] [] ? add_taint.cold+0x16/0x16 [ 31.056691] [] ? warn_slowpath_common.cold+0x5/0x20 [ 31.063336] [] warn_slowpath_common.cold+0x20/0x20 [ 31.069893] [] warn_slowpath_null+0x2a/0x30 [ 31.075851] [] __alloc_pages_nodemask+0x11d7/0x14b0 [ 31.082499] [] ? kasan_kmalloc.part.0+0xc6/0xf0 [ 31.088902] [] ? save_stack_trace+0x26/0x50 [ 31.094848] [] ? kasan_kmalloc.part.0+0x62/0xf0 [ 31.101141] [] ? kasan_kmalloc+0xb7/0xd0 [ 31.106842] [] ? policydb_read+0xc3b/0x2280 [ 31.112836] [] ? security_load_policy+0x23c/0x9c0 [ 31.119315] [] ? sel_write_load+0x175/0xf90 [ 31.125270] [] ? vfs_write+0x182/0x4e0 [ 31.130792] [] ? __alloc_pages_direct_compact+0x220/0x220 [ 31.137968] [] ? trace_hardirqs_on_caller+0x300/0x5a0 [ 31.144782] [] ? trace_hardirqs_on+0xd/0x10 [ 31.150733] [] ? policydb_read+0x7dd/0x2280 [ 31.156683] [] ? kasan_slab_free+0xb0/0x190 [ 31.162632] [] ? kfree+0xf4/0x310 [ 31.167711] [] ? policydb_read+0x7dd/0x2280 [ 31.173673] [] ? security_load_policy+0x23c/0x9c0 [ 31.180140] [] ? sel_write_load+0x175/0xf90 [ 31.186091] [] ? __vfs_write+0x116/0x3d0 [ 31.191776] [] ? vfs_write+0x182/0x4e0 [ 31.197288] [] ? SyS_write+0xdc/0x1c0 [ 31.202716] [] alloc_kmem_pages+0x12/0x20 [ 31.208491] [] kmalloc_order+0x21/0x70 [ 31.214002] [] kmalloc_order_trace+0x1f/0x1a0 [ 31.220121] [] __kmalloc+0x1c2/0x330 [ 31.225474] [] str_read+0x2b/0x130 [ 31.230637] [] user_read+0x240/0x3f0 [ 31.235977] [] ? mls_read_range_helper+0x380/0x380 [ 31.242530] [] ? policydb_read+0x7dd/0x2280 [ 31.248477] [] policydb_read+0xc3b/0x2280 [ 31.254250] [] ? mark_held_locks+0xb1/0x100 [ 31.260196] [] ? get_page_from_freelist+0x9d8/0x1d00 [ 31.266974] [] ? mls_read_range_helper+0x380/0x380 [ 31.273573] [] ? string_to_av_perm+0x90/0x90 [ 31.279613] [] ? security_load_policy+0x103/0x9c0 [ 31.286206] [] ? check_preemption_disabled+0x3c/0x200 [ 31.293030] [] ? check_preemption_disabled+0x3c/0x200 [ 31.299850] [] ? kasan_unpoison_shadow+0x35/0x50 [ 31.306231] [] ? kasan_kmalloc+0xb7/0xd0 [ 31.311919] [] ? kmem_cache_alloc_trace+0x123/0x2d0 [ 31.318564] [] security_load_policy+0x23c/0x9c0 [ 31.324868] [] ? native_set_pgd+0x50/0x50 [ 31.330640] [] ? security_get_bools+0x610/0x610 [ 31.336969] [] ? vmap_page_range_noflush+0x517/0x780 [ 31.343700] [] ? trace_hardirqs_on+0x10/0x10 [ 31.349731] [] ? alloc_vmap_area.isra.0+0x810/0x810 [ 31.356374] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 31.363100] [] ? check_stack_object+0x114/0x160 [ 31.369412] [] ? __check_object_size+0x222/0x332 [ 31.375801] [] sel_write_load+0x175/0xf90 [ 31.381572] [] ? debug_check_no_obj_freed+0x159/0x6e0 [ 31.388384] [] ? sel_read_bool+0x240/0x240 [ 31.394244] [] ? _raw_spin_unlock_irqrestore+0x5a/0x70 [ 31.401146] [] ? trace_hardirqs_on+0x10/0x10 [ 31.407177] [] ? debug_check_no_obj_freed+0x2b9/0x6e0 [ 31.413991] [] __vfs_write+0x116/0x3d0 [ 31.419507] [] ? sel_read_bool+0x240/0x240 [ 31.425367] [] ? __vfs_read+0x3c0/0x3c0 [ 31.430968] [] ? check_preemption_disabled+0x3c/0x200 [ 31.437782] [] ? check_preemption_disabled+0x3c/0x200 [ 31.444605] [] ? rcu_read_lock_sched_held+0x10b/0x130 [ 31.451416] [] ? rcu_sync_lockdep_assert+0x73/0xb0 [ 31.457991] [] ? __sb_start_write+0x14f/0x310 [ 31.464127] [] vfs_write+0x182/0x4e0 [ 31.469464] [] SyS_write+0xdc/0x1c0 [ 31.474718] [] ? SyS_read+0x1c0/0x1c0 [ 31.480141] [] ? __do_page_fault+0x2b3/0x7f0 [ 31.486186] [] ? do_fast_syscall_32+0xd6/0xa90 [ 31.493180] [] ? SyS_read+0x1c0/0x1c0 [ 31.498606] [] do_fast_syscall_32+0x32d/0xa90 [ 31.504732] [] sysenter_flags_fixed+0xd/0x1a [ 31.511377] Kernel Offset: disabled [ 31.515026] Rebooting in 86400 seconds..