[....] Starting enhanced syslogd: rsyslogd[ 11.258710] audit: type=1400 audit(1514727375.715:5): avc: denied { syslog } for pid=3330 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 syzkaller login: [ 15.597324] audit: type=1400 audit(1514727380.054:6): avc: denied { map } for pid=3470 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.59' (ECDSA) to the list of known hosts. executing program [ 21.814264] audit: type=1400 audit(1514727386.271:7): avc: denied { map } for pid=3485 comm="syzkaller426814" path="/root/syzkaller426814263" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 21.816492] WARNING: CPU: 1 PID: 3485 at mm/page_alloc.c:3926 __alloc_pages_slowpath+0x1ffc/0x2d00 [ 21.816504] Kernel panic - not syncing: panic_on_warn set ... [ 21.816504] [ 21.816512] CPU: 1 PID: 3485 Comm: syzkaller426814 Not tainted 4.15.0-rc5+ #244 [ 21.816515] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 21.816519] Call Trace: [ 21.816531] dump_stack+0x194/0x257 [ 21.816543] ? arch_local_irq_restore+0x53/0x53 [ 21.816559] ? vsnprintf+0x1ed/0x1900 [ 21.816575] panic+0x1e4/0x41c [ 21.816583] ? refcount_error_report+0x214/0x214 [ 21.816593] ? show_regs_print_info+0x18/0x18 [ 21.816611] ? __warn+0x1c1/0x200 [ 21.816624] ? __alloc_pages_slowpath+0x1ffc/0x2d00 [ 21.816630] __warn+0x1dc/0x200 [ 21.816639] ? __alloc_pages_slowpath+0x1ffc/0x2d00 [ 21.816650] report_bug+0x211/0x2d0 [ 21.816670] fixup_bug.part.11+0x37/0x80 [ 21.816680] do_error_trap+0x2d7/0x3e0 [ 21.816694] ? math_error+0x400/0x400 [ 21.816708] ? __lock_acquire+0x664/0x3e00 [ 21.816728] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 21.816744] do_invalid_op+0x1b/0x20 [ 21.816751] invalid_op+0x22/0x40 [ 21.816758] RIP: 0010:__alloc_pages_slowpath+0x1ffc/0x2d00 [ 21.816762] RSP: 0018:ffff8801c011f418 EFLAGS: 00010246 [ 21.816769] RAX: ffffed0038023ea4 RBX: 1ffff10038023ea4 RCX: 0000000000000000 [ 21.816773] RDX: ffff8801c011fa70 RSI: 0000000000000033 RDI: 0000000000000000 [ 21.816777] RBP: ffff8801c011f908 R08: 0000000000000000 R09: fffffffffff80f8a [ 21.816781] R10: 0000000000000033 R11: 0000000000000033 R12: 0000000000000000 [ 21.816785] R13: ffff8801c011fad0 R14: 00000000014280c2 R15: ffff8801c011fa70 [ 21.816819] ? __lock_acquire+0x664/0x3e00 [ 21.816833] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 21.816839] ? check_noncircular+0x19/0x20 [ 21.816846] ? __lock_acquire+0x2dcd/0x3e00 [ 21.816866] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 21.816876] ? check_noncircular+0x20/0x20 [ 21.816887] ? warn_alloc+0x2b0/0x2b0 [ 21.816905] ? __is_insn_slot_addr+0x1fc/0x330 [ 21.816915] ? lock_downgrade+0x980/0x980 [ 21.816933] ? find_held_lock+0x35/0x1d0 [ 21.816954] ? is_bpf_text_address+0x7b/0x120 [ 21.816963] ? check_noncircular+0x20/0x20 [ 21.816977] ? check_noncircular+0x20/0x20 [ 21.816985] ? __free_insn_slot+0x5c0/0x5c0 [ 21.817006] ? rcutorture_record_progress+0x10/0x10 [ 21.817028] ? find_held_lock+0x35/0x1d0 [ 21.817042] ? __lock_is_held+0xb6/0x140 [ 21.817070] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 21.817083] ? rcu_note_context_switch+0x710/0x710 [ 21.817098] ? __might_sleep+0x95/0x190 [ 21.817112] __alloc_pages_nodemask+0x9fb/0xd80 [ 21.817121] ? save_stack+0x43/0xd0 [ 21.817127] ? kasan_slab_free+0x71/0xc0 [ 21.817140] ? __alloc_pages_slowpath+0x2d00/0x2d00 [ 21.817145] ? check_noncircular+0x20/0x20 [ 21.817155] ? print_irqtrace_events+0x270/0x270 [ 21.817193] ? __lock_is_held+0xb6/0x140 [ 21.817222] alloc_pages_current+0xb6/0x1e0 [ 21.817239] ion_system_contig_heap_allocate+0x40/0x2c0 [ 21.817255] ion_alloc+0x2c1/0x9e0 [ 21.817276] ? ion_dma_buf_release+0x50/0x50 [ 21.817290] ? __might_sleep+0x95/0x190 [ 21.817307] ? kasan_check_write+0x14/0x20 [ 21.817317] ? _copy_from_user+0x99/0x110 [ 21.817330] ion_ioctl+0x26d/0x380 [ 21.817340] ? ion_query_heaps+0x490/0x490 [ 21.817361] ? ion_query_heaps+0x490/0x490 [ 21.817371] do_vfs_ioctl+0x1b1/0x1520 [ 21.817376] ? _cond_resched+0x14/0x30 [ 21.817391] ? ioctl_preallocate+0x2b0/0x2b0 [ 21.817405] ? selinux_capable+0x40/0x40 [ 21.817419] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 21.817447] ? security_file_ioctl+0x89/0xb0 [ 21.817461] SyS_ioctl+0x8f/0xc0 [ 21.817476] entry_SYSCALL_64_fastpath+0x23/0x9a [ 21.817481] RIP: 0033:0x43fcb9 [ 21.817485] RSP: 002b:00007ffd9858df78 EFLAGS: 00000203 ORIG_RAX: 0000000000000010 [ 21.817491] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 21.817495] RDX: 0000000020001eff RSI: 00000000c0184900 RDI: 0000000000000003 [ 21.817499] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 21.817503] R10: 0000000000000000 R11: 0000000000000203 R12: 0000000000401620 [ 21.817507] R13: 00000000004016b0 R14: 0000000000000000 R15: 0000000000000000 [ 21.840565] Dumping ftrace buffer: [ 21.840647] (ftrace buffer empty) [ 21.840650] Kernel Offset: disabled [ 22.247668] Rebooting in 86400 seconds..