[....] Starting enhanced syslogd: rsyslogd[ 14.517585] audit: type=1400 audit(1563524151.432:4): avc: denied { syslog } for pid=1921 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 '10.128.1.60' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 46.430405] ------------[ cut here ]------------ [ 46.435232] WARNING: CPU: 0 PID: 2085 at mm/page_alloc.c:3069 __alloc_pages_nodemask+0x11d7/0x14b0() [ 46.446073] Kernel panic - not syncing: panic_on_warn set ... [ 46.446073] [ 46.453537] CPU: 0 PID: 2085 Comm: syz-executor170 Not tainted 4.4.174+ #17 [ 46.460716] 0000000000000000 ea3f1b6319545478 ffff8800b9c37160 ffffffff81aad1a1 [ 46.468771] 0000000000000000 ffffffff82835ee0 ffffffff82885260 0000000000000bfd [ 46.476773] ffffffff813d12d7 ffff8800b9c37240 ffffffff813a48c2 0000000041b58ab3 [ 46.484805] Call Trace: [ 46.487386] [] dump_stack+0xc1/0x120 [ 46.492730] [] ? __alloc_pages_nodemask+0x11d7/0x14b0 [ 46.499647] [] panic+0x1b9/0x37b [ 46.504745] [] ? add_taint.cold+0x16/0x16 [ 46.510541] [] ? warn_slowpath_common.cold+0x5/0x20 [ 46.517203] [] warn_slowpath_common.cold+0x20/0x20 [ 46.523814] [] warn_slowpath_null+0x2a/0x30 [ 46.529781] [] __alloc_pages_nodemask+0x11d7/0x14b0 [ 46.536496] [] ? save_stack_trace+0x26/0x50 [ 46.542548] [] ? kasan_kmalloc.part.0+0x62/0xf0 [ 46.548949] [] ? kasan_kmalloc+0xb7/0xd0 [ 46.554717] [] ? __kmalloc+0x141/0x330 [ 46.560350] [] ? hashtab_create+0x11d/0x210 [ 46.566461] [] ? symtab_init+0x2c/0xb0 [ 46.571995] [] ? class_read+0x1fd/0x950 [ 46.577600] [] ? policydb_read+0xc3b/0x2280 [ 46.583550] [] ? security_load_policy+0x23c/0x9c0 [ 46.590149] [] ? sel_write_load+0x175/0xf90 [ 46.596136] [] ? __vfs_write+0x116/0x3d0 [ 46.601828] [] ? vfs_write+0x182/0x4e0 [ 46.607500] [] ? SyS_write+0xdc/0x1c0 [ 46.612949] [] ? do_fast_syscall_32+0x32d/0xa90 [ 46.619327] [] ? sysenter_flags_fixed+0xd/0x1a [ 46.625549] [] ? policydb_read+0xc3b/0x2280 [ 46.631498] [] ? security_load_policy+0x23c/0x9c0 [ 46.638097] [] ? sel_write_load+0x175/0xf90 [ 46.644082] [] ? vfs_write+0x182/0x4e0 [ 46.649607] [] ? __alloc_pages_direct_compact+0x220/0x220 [ 46.656784] [] ? mark_held_locks+0xb1/0x100 [ 46.662744] [] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 46.669655] [] ? trace_hardirqs_on+0xd/0x10 [ 46.675616] [] ? check_preemption_disabled+0x3c/0x200 [ 46.682444] [] alloc_kmem_pages+0x12/0x20 [ 46.688384] [] kmalloc_order+0x21/0x70 [ 46.694009] [] kmalloc_order_trace+0x1f/0x1a0 [ 46.700208] [] __kmalloc+0x1c2/0x330 [ 46.705680] [] ? symcmp+0x30/0x30 [ 46.710949] [] str_read+0x2b/0x130 [ 46.716131] [] class_read+0x2c0/0x950 [ 46.721751] [] ? perm_read.isra.0+0x2c0/0x2c0 [ 46.727968] [] ? debug_object_active_state+0x380/0x380 [ 46.734880] [] policydb_read+0xc3b/0x2280 [ 46.740678] [] ? mark_held_locks+0xb1/0x100 [ 46.746630] [] ? get_page_from_freelist+0x9d8/0x1d00 [ 46.753492] [] ? perm_read.isra.0+0x2c0/0x2c0 [ 46.759731] [] ? string_to_av_perm+0x90/0x90 [ 46.765778] [] ? security_load_policy+0x103/0x9c0 [ 46.772266] [] ? check_preemption_disabled+0x3c/0x200 [ 46.779099] [] ? check_preemption_disabled+0x3c/0x200 [ 46.786137] [] ? kasan_unpoison_shadow+0x35/0x50 [ 46.792538] [] ? kasan_kmalloc+0xb7/0xd0 [ 46.798417] [] ? kmem_cache_alloc_trace+0x123/0x2d0 [ 46.805178] [] security_load_policy+0x23c/0x9c0 [ 46.811489] [] ? native_set_pgd+0x50/0x50 [ 46.817279] [] ? security_get_bools+0x610/0x610 [ 46.823668] [] ? vmap_page_range_noflush+0x517/0x780 [ 46.830414] [] ? trace_hardirqs_on+0x10/0x10 [ 46.836451] [] ? alloc_vmap_area.isra.0+0x810/0x810 [ 46.843231] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 46.849984] [] ? check_stack_object+0x114/0x160 [ 46.856370] [] ? __check_object_size+0x222/0x332 [ 46.862871] [] sel_write_load+0x175/0xf90 [ 46.868663] [] ? debug_check_no_obj_freed+0x159/0x6e0 [ 46.875498] [] ? sel_read_bool+0x240/0x240 [ 46.881552] [] ? _raw_spin_unlock_irqrestore+0x5a/0x70 [ 46.888473] [] ? trace_hardirqs_on+0x10/0x10 [ 46.894531] [] ? debug_check_no_obj_freed+0x2b9/0x6e0 [ 46.901359] [] __vfs_write+0x116/0x3d0 [ 46.906877] [] ? sel_read_bool+0x240/0x240 [ 46.912740] [] ? __vfs_read+0x3c0/0x3c0 [ 46.918573] [] ? check_preemption_disabled+0x3c/0x200 [ 46.925607] [] ? check_preemption_disabled+0x3c/0x200 [ 46.932532] [] ? rcu_read_lock_sched_held+0x10b/0x130 [ 46.939516] [] ? rcu_sync_lockdep_assert+0x73/0xb0 [ 46.946080] [] ? __sb_start_write+0x14f/0x310 [ 46.952213] [] vfs_write+0x182/0x4e0 [ 46.957559] [] SyS_write+0xdc/0x1c0 [ 46.962816] [] ? SyS_read+0x1c0/0x1c0 [ 46.968296] [] ? __do_page_fault+0x2b3/0x7f0 [ 46.974348] [] ? do_fast_syscall_32+0xd6/0xa90 [ 46.980572] [] ? SyS_read+0x1c0/0x1c0 [ 46.986090] [] do_fast_syscall_32+0x32d/0xa90 [ 46.992327] [] sysenter_flags_fixed+0xd/0x1a [ 46.998737] Kernel Offset: disabled [ 47.002379] Rebooting in 86400 seconds..