Corruption with 4.3.14 under OSX host and .vdi disk

[carlosefr]

I have a few Linux VMs running under VirtualBox on OSX 10.8.5 that are showing random corruption/behavior since upgrading to 4.3.14. This corruption/behavior seems to happen only if the virtual disk format is ".vdi" (cannot reproduce if the disk format is ".vmdk").

Some examples of what I'm seeing on a CentOS 6.x 64bit VM:

• Errors during boot about service shell scripts with syntax errors.
• Cannot do an "yum update" without it crashing half-way through complaining about I/O errors or corrupted databases.
• Strange behavior like "su -" returning immediately without asking for a password or not accepting any password whatsoever.

Uninstalling 4.3.14 and reinstalling 4.3.12 makes all these go away.

I also have another 64bit VM with Debian 7.x where weird things like I/O errors causing filesystems to remount read-only can also be seen.

Why I believe this only affects ".vdi" disks:

I have another OSX 10.9.5 machine with VirtualBox 4.3.14 where I wasn't seeing any strange behavior. So I exported the previously mentioned CentOS VM and imported it there, but still no strange behavior.

Then I noticed that all my VMs there have ".vmdk" disks (they were all exported from another machine). I copied the ".vdi" for the CentOS VM and booted it there and... the weird behaviors start happening.

[carlosefr]

Correction: the second host is also OSX 10.8.5 (Mountain Lion).

[aeichner]

Please reopen if still relevant with a recent VirtualBox release.