Absolutely VTune works on Banias, has for years now. Something unique to your installation or your sampling experiment is the problem here.
A couple of ideas follow:
1) Try running a simple sampling experiment or two, say, on /bin/ls. Do they work? If so, you don't have a sampling driver or installation problem.
2) If sessions on /bin/ls FAIL, you still have a sampling driver, or installation issue.It probably matters when you made the sampling drivers.If you made them BEFORE you upgraded with the patch, you should remake them now and compare.
3) If the simple experiments PASS *and* you made the drivers with the VDK after you upgraded, then my gut here is you're not seeing a Banias issue, but a kernel driver issue, and the act of sampling the driver is disrupting the kernel itself, causing it to panic.
A few simple binary experiements will tell us a lot (/bin/ls, super easy). Report back here what you see, and let us know.
If this advice is absolutely useless to you, you should open a Premier case on this immediately.