id	summary	reporter	owner	description	type	status	component	version	resolution	keywords	cc	guest	host
8088	VirtualBox.exe allocates 2x host RAM	Catalin Patulea		"VirtualBox.exe normally uses less than 100 MB of RAM on my machine. Some time after guest startup (can't repro reliably yet), it allocates 4 GB, then an extra 4 GB, causing my machine to grind to a halt while Windows scrambles to page other apps in and out of the pagefile. When I try to close the virtual machine, it gets stuck in Stopping and I have to kill the process manually.

 * Host OS: Windows XP x64
 * VirtualBox: 4.0.0 r69151 with extension pack 4.0.0 r69151
 * Guest OS: Ubuntu 10.04.1 32-bit

 * Host CPUs: 4 (i5 760)
 * Host RAM: 4 GB
 * Guest CPUs: 1
 * Guest RAM: 1 GB
 * VT-x: Enabled
 * Guest Additions: 4.0.0 r69151

Attachments:
 * Ubuntu.vbox - full vbox file of the VM in question
 * Ubuntu-2011-01-15-18-36-11.log - log file after trying to stop the machine (added a comment at the time I tried to close the machine)
 * procexp.png - Process Explorer list showing VB.exe at 8 GB
 * virtualbox_mem.png - graph of CPU, memory and I/O of VB.exe when bug has just happened
 * virtualbox_*.png - other Process Explorer pages for the VB.exe process
 * session_*.png - pages of the Session Information dialog for the VM
 * windbg_vadump.txt - !vadump of VB.exe just after noticing that it allocated 8 GB, before trying to stop the VM
 * windbg_stacks.txt - stacks of all threads, again before trying to stop the VM
"	defect	closed	other	VirtualBox 4.0.0	fixed			other	other