[....] Starting enhanced syslogd: rsyslogd[ 12.061680] audit: type=1400 audit(1514727744.316:5): avc: denied { syslog } for pid=3339 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 syzkaller login: [ 17.930427] audit: type=1400 audit(1514727750.185:6): avc: denied { map } for pid=3479 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 '10.128.0.21' (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 [ 24.131333] audit: type=1400 audit(1514727756.386:7): avc: denied { map } for pid=3493 comm="syzkaller183381" path="/root/syzkaller183381693" 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 24.985180] WARNING: CPU: 0 PID: 4344 at mm/page_alloc.c:3926 __alloc_pages_slowpath+0x1ffc/0x2d00 [ 24.994323] Kernel panic - not syncing: panic_on_warn set ... [ 24.994323] [ 25.001660] CPU: 0 PID: 4344 Comm: syzkaller183381 Not tainted 4.15.0-rc5+ #154 [ 25.009070] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.018387] Call Trace: [ 25.020943] dump_stack+0x194/0x257 [ 25.024539] ? arch_local_irq_restore+0x53/0x53 [ 25.029181] ? vsnprintf+0x1ed/0x1900 [ 25.032954] panic+0x1e4/0x41c [ 25.036112] ? refcount_error_report+0x214/0x214 [ 25.040834] ? show_regs_print_info+0x18/0x18 [ 25.045301] ? __warn+0x1c1/0x200 [ 25.048725] ? __alloc_pages_slowpath+0x1ffc/0x2d00 [ 25.053707] __warn+0x1dc/0x200 [ 25.056951] ? __alloc_pages_slowpath+0x1ffc/0x2d00 [ 25.061938] report_bug+0x211/0x2d0 [ 25.065539] fixup_bug.part.11+0x37/0x80 [ 25.069567] do_error_trap+0x2d7/0x3e0 [ 25.073422] ? print_irqtrace_events+0x270/0x270 [ 25.078146] ? math_error+0x400/0x400 [ 25.081921] ? noop_count+0x40/0x40 [ 25.085518] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.090337] do_invalid_op+0x1b/0x20 [ 25.094022] invalid_op+0x22/0x40 [ 25.097446] RIP: 0010:__alloc_pages_slowpath+0x1ffc/0x2d00 [ 25.103036] RSP: 0018:ffff8801be6573e0 EFLAGS: 00010246 [ 25.108368] RAX: ffffed0037ccae9d RBX: 1ffff10037ccae9d RCX: 0000000000000000 [ 25.115610] RDX: ffff8801be657a38 RSI: 0000000000000033 RDI: 0000000000000000 [ 25.122847] RBP: ffff8801be6578d0 R08: 0000000000000000 R09: fffffffffff80f8a [ 25.130090] R10: 0000000000000033 R11: 0000000000000033 R12: 0000000000000000 [ 25.137326] R13: ffff8801be657a98 R14: 00000000014280c2 R15: ffff8801be657a38 [ 25.144589] ? __lock_acquire+0x664/0x3e00 [ 25.148800] ? __might_sleep+0x95/0x190 [ 25.152746] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 25.157910] ? check_noncircular+0x20/0x20 [ 25.162123] ? warn_alloc+0x2b0/0x2b0 [ 25.165898] ? __is_insn_slot_addr+0x1fc/0x330 [ 25.170448] ? check_noncircular+0x20/0x20 [ 25.174652] ? lock_downgrade+0x980/0x980 [ 25.178780] ? find_held_lock+0x35/0x1d0 [ 25.182815] ? is_bpf_text_address+0x7b/0x120 [ 25.187277] ? check_noncircular+0x20/0x20 [ 25.191480] ? print_irqtrace_events+0x270/0x270 [ 25.196210] ? check_noncircular+0x20/0x20 [ 25.200418] ? depot_save_stack+0x3b5/0x490 [ 25.204706] ? lock_downgrade+0x980/0x980 [ 25.208827] ? find_held_lock+0x35/0x1d0 [ 25.212863] ? __lock_is_held+0xb6/0x140 [ 25.216906] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 25.222766] ? rcu_note_context_switch+0x710/0x710 [ 25.227670] ? __might_sleep+0x95/0x190 [ 25.231619] __alloc_pages_nodemask+0x9fb/0xd80 [ 25.236261] ? __alloc_pages_slowpath+0x2d00/0x2d00 [ 25.241242] ? check_noncircular+0x20/0x20 [ 25.245444] ? print_irqtrace_events+0x270/0x270 [ 25.250185] ? __lock_is_held+0xb6/0x140 [ 25.254230] alloc_pages_current+0xb6/0x1e0 [ 25.258519] ? __down_interruptible+0x6b0/0x6b0 [ 25.263165] ion_system_contig_heap_allocate+0x40/0x2c0 [ 25.268501] ion_alloc+0x2c1/0x9e0 [ 25.272027] ? ion_dma_buf_release+0x50/0x50 [ 25.276407] ? __might_sleep+0x95/0x190 [ 25.280355] ? kasan_check_write+0x14/0x20 [ 25.284559] ? _copy_from_user+0x99/0x110 [ 25.288675] ion_ioctl+0x26d/0x380 [ 25.292183] ? ion_query_heaps+0x490/0x490 [ 25.296402] ? security_file_ioctl+0x7d/0xb0 [ 25.300778] ? security_file_ioctl+0x89/0xb0 [ 25.305161] compat_SyS_ioctl+0x151/0x2a30 [ 25.309364] ? do_fast_syscall_32+0x156/0xf9d [ 25.313824] ? ion_query_heaps+0x490/0x490 [ 25.318029] ? do_ioctl+0x60/0x60 [ 25.321455] do_fast_syscall_32+0x3ee/0xf9d [ 25.325761] ? do_int80_syscall_32+0x9d0/0x9d0 [ 25.330316] ? syscall_return_slowpath+0x2ad/0x550 [ 25.335213] ? prepare_exit_to_usermode+0x340/0x340 [ 25.340198] ? sysret32_from_system_call+0x5/0x3b [ 25.345022] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.349844] entry_SYSENTER_compat+0x54/0x63 [ 25.354217] RIP: 0023:0xf7fbac79 [ 25.357546] RSP: 002b:00000000f7fb61fc EFLAGS: 00000297 ORIG_RAX: 0000000000000036 [ 25.365220] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00000000c0184900 [ 25.372456] RDX: 0000000020002000 RSI: 0000000000000000 RDI: 0000000000000000 [ 25.379693] RBP: 00000000003d0f00 R08: 0000000000000000 R09: 0000000000000000 [ 25.386937] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 25.394176] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 25.402030] Dumping ftrace buffer: [ 25.405602] (ftrace buffer empty) [ 25.409279] Kernel Offset: disabled [ 25.412874] Rebooting in 86400 seconds..