[ 37.193958] audit: type=1800 audit(1549080534.095:25): pid=7555 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 37.213029] audit: type=1800 audit(1549080534.095:26): pid=7555 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 37.232637] audit: type=1800 audit(1549080534.095:27): pid=7555 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 37.328412] audit: type=1800 audit(1549080534.225:28): pid=7555 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?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 '10.128.0.31' (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 syzkaller login: [ 49.484853] ------------[ cut here ]------------ [ 49.495397] memory commitment underflow [ 49.495582] WARNING: CPU: 0 PID: 7712 at mm/util.c:643 __vm_enough_memory+0x47b/0x5a0 [ 49.507530] Kernel panic - not syncing: panic_on_warn set ... [ 49.513433] CPU: 0 PID: 7712 Comm: syz-executor331 Not tainted 5.0.0-rc4+ #56 [ 49.520701] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.530052] Call Trace: executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 49.532651] dump_stack+0x172/0x1f0 [ 49.536288] ? __vm_enough_memory+0x3d0/0x5a0 [ 49.540795] panic+0x2cb/0x65c [ 49.543997] ? __warn_printk+0xf3/0xf3 [ 49.547894] ? __vm_enough_memory+0x47b/0x5a0 [ 49.552391] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 49.557969] ? __warn.cold+0x5/0x45 [ 49.561611] ? __warn+0xe8/0x1d0 [ 49.565018] ? __vm_enough_memory+0x47b/0x5a0 [ 49.569517] __warn.cold+0x20/0x45 [ 49.573070] ? vprintk_emit+0x1ce/0x6d0 [ 49.577045] ? __vm_enough_memory+0x47b/0x5a0 [ 49.581541] report_bug+0x263/0x2b0 [ 49.585181] do_error_trap+0x11b/0x200 [ 49.589073] do_invalid_op+0x37/0x50 [ 49.592784] ? __vm_enough_memory+0x47b/0x5a0 [ 49.597285] invalid_op+0x14/0x20 [ 49.600737] RIP: 0010:__vm_enough_memory+0x47b/0x5a0 [ 49.605856] Code: e8 7a 42 db ff 0f b6 75 d0 40 84 f6 0f 85 50 fc ff ff e8 28 41 db ff 48 c7 c7 a0 f9 72 87 c6 05 0f 3d c4 07 01 e8 c3 94 ae ff <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 0f b6 14 [ 49.624770] RSP: 0018:ffff88808761fb10 EFLAGS: 00010286 [ 49.630130] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 49.637400] RDX: 0000000000000000 RSI: ffffffff815a8a06 RDI: ffffed1010ec3f54 [ 49.644668] RBP: ffff88808761fb48 R08: ffff88809ccb4400 R09: ffff88809ccb4cf0 [ 49.651952] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 49.659219] R13: ffff888086832fc0 R14: ffffffff88a276c0 R15: 0000000000000c67 [ 49.666500] ? vprintk_func+0x86/0x189 [ 49.670406] security_vm_enough_memory_mm+0xa0/0xd0 [ 49.675452] copy_process.part.0+0x3411/0x79a0 [ 49.680066] ? __cleanup_sighand+0x70/0x70 [ 49.684343] ? __handle_mm_fault+0x7cd/0x3f20 [ 49.688885] ? __do_page_fault+0x610/0xd60 [ 49.693122] ? find_held_lock+0x35/0x130 [ 49.697195] _do_fork+0x257/0xfe0 [ 49.700666] ? fork_idle+0x1d0/0x1d0 [ 49.704392] ? kasan_check_write+0x14/0x20 [ 49.708640] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 49.713402] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 49.718168] ? do_syscall_64+0x26/0x610 [ 49.722148] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 49.727512] ? do_syscall_64+0x26/0x610 [ 49.731509] __x64_sys_clone+0xbf/0x150 [ 49.735491] do_syscall_64+0x103/0x610 [ 49.739386] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 49.744589] RIP: 0033:0x43f83a [ 49.747785] Code: f7 d8 64 89 04 25 d4 02 00 00 64 4c 8b 0c 25 10 00 00 00 31 d2 4d 8d 91 d0 02 00 00 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 f5 00 00 00 85 c0 41 89 c5 0f 85 fc 00 00 [ 49.766684] RSP: 002b:00007fffb56548a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 [ 49.774400] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043f83a [ 49.781685] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 [ 49.788957] RBP: 00007fffb56548c0 R08: 0000000000001e20 R09: 0000000000a8f880 [ 49.796229] R10: 0000000000a8fb50 R11: 0000000000000246 R12: 0000000000001e20 [ 49.803499] R13: 0000000000401da0 R14: 0000000000000000 R15: 0000000000000000 [ 49.811880] Kernel Offset: disabled [ 49.815561] Rebooting in 86400 seconds..