[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 40.190310][ T26] audit: type=1800 audit(1549082235.779:25): pid=7701 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 40.217507][ T26] audit: type=1800 audit(1549082235.779:26): pid=7701 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 40.243511][ T26] audit: type=1800 audit(1549082235.779:27): pid=7701 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 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 '10.128.0.150' (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 syzkaller login: [ 50.246475][ T7854] ------------[ cut here ]------------ [ 50.258689][ T7854] memory commitment underflow [ 50.258833][ T7854] WARNING: CPU: 0 PID: 7854 at mm/util.c:643 __vm_enough_memory+0x47b/0x5a0 [ 50.272181][ T7854] Kernel panic - not syncing: panic_on_warn set ... [ 50.278775][ T7854] CPU: 0 PID: 7854 Comm: syz-executor681 Not tainted 5.0.0-rc4-next-20190201 #25 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 50.287877][ T7854] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.297928][ T7854] Call Trace: [ 50.301224][ T7854] dump_stack+0x172/0x1f0 [ 50.305561][ T7854] ? __vm_enough_memory+0x420/0x5a0 [ 50.310769][ T7854] panic+0x2cb/0x65c [ 50.314685][ T7854] ? __warn_printk+0xf3/0xf3 [ 50.319288][ T7854] ? __vm_enough_memory+0x47b/0x5a0 [ 50.324494][ T7854] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 50.330739][ T7854] ? __warn.cold+0x5/0x45 [ 50.335078][ T7854] ? __warn+0xe8/0x1d0 [ 50.339179][ T7854] ? __vm_enough_memory+0x47b/0x5a0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 50.344404][ T7854] __warn.cold+0x20/0x45 [ 50.348671][ T7854] ? vprintk_emit+0x1ce/0x6d0 [ 50.353356][ T7854] ? __vm_enough_memory+0x47b/0x5a0 [ 50.358564][ T7854] report_bug+0x263/0x2b0 [ 50.362904][ T7854] do_error_trap+0x11b/0x200 [ 50.367503][ T7854] do_invalid_op+0x37/0x50 [ 50.371927][ T7854] ? __vm_enough_memory+0x47b/0x5a0 [ 50.377130][ T7854] invalid_op+0x14/0x20 [ 50.381295][ T7854] RIP: 0010:__vm_enough_memory+0x47b/0x5a0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 50.387580][ T7854] Code: e8 9a de da ff 0f b6 75 d0 40 84 f6 0f 85 50 fc ff ff e8 48 dd da ff 48 c7 c7 60 0e 73 87 c6 05 a0 28 c4 07 01 e8 a3 11 ae ff <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 0f b6 14 [ 50.407189][ T7854] RSP: 0018:ffff88808b95fb10 EFLAGS: 00010286 [ 50.413256][ T7854] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 50.421231][ T7854] RDX: 0000000000000000 RSI: ffffffff815a9a76 RDI: ffffed101172bf54 [ 50.429205][ T7854] RBP: ffff88808b95fb48 R08: ffff88808dd7a640 R09: ffff88808dd7af30 [ 50.437180][ T7854] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 50.445152][ T7854] R13: ffff88808ceaaec0 R14: ffffffff88a288a0 R15: 0000000000000c67 [ 50.453148][ T7854] ? vprintk_func+0x86/0x189 [ 50.457757][ T7854] security_vm_enough_memory_mm+0xa0/0xd0 [ 50.463488][ T7854] copy_process.part.0+0x343e/0x79e0 [ 50.468805][ T7854] ? __cleanup_sighand+0x70/0x70 [ 50.473750][ T7854] ? __handle_mm_fault+0x7cd/0x3ec0 [ 50.478962][ T7854] ? __do_page_fault+0x623/0xda0 [ 50.483903][ T7854] ? find_held_lock+0x35/0x130 [ 50.488695][ T7854] _do_fork+0x257/0xfe0 [ 50.492876][ T7854] ? fork_idle+0x1d0/0x1d0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 50.497305][ T7854] ? kasan_check_write+0x14/0x20 [ 50.502247][ T7854] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 50.507714][ T7854] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 50.513985][ T7854] ? do_syscall_64+0x26/0x610 [ 50.518899][ T7854] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.524967][ T7854] ? do_syscall_64+0x26/0x610 [ 50.529676][ T7854] __x64_sys_clone+0xbf/0x150 [ 50.534363][ T7854] do_syscall_64+0x103/0x610 [ 50.538966][ T7854] entry_SYSCALL_64_after_hwframe+0x49/0xbe executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 50.544857][ T7854] RIP: 0033:0x43f83a [ 50.548760][ T7854] 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 [ 50.568368][ T7854] RSP: 002b:00007ffe38394d80 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 [ 50.576779][ T7854] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043f83a [ 50.584750][ T7854] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 executing program executing program executing program executing program executing program [ 50.592728][ T7854] RBP: 00007ffe38394da0 R08: 0000000000001eae R09: 000000000095d880 [ 50.600708][ T7854] R10: 000000000095db50 R11: 0000000000000246 R12: 0000000000001eae [ 50.608684][ T7854] R13: 0000000000401da0 R14: 0000000000000000 R15: 0000000000000000 [ 50.617825][ T7854] Kernel Offset: disabled [ 50.622223][ T7854] Rebooting in 86400 seconds..