On Sun, 11 Dec 2011 13:36:30 -0500, Alex Villacís Lasso a_villacis@palosanto.com wrote:
My system is a Fedora 16 x86_64 running self-compiled vanilla kernel (.config attached for -rc5). I am getting an apparent memory corruption that starts since linux 3.2-rc5. No such corruption was noticed in 3.2-rc4. On the first instance, I eventually got a NULL pointer dereference and the screen went black, the keyboard was unresponsive, and I had to hard-reboot the machine. On the second instance, I managed to reboot the machine normally. The full message log is attached. An extract of the first WARNING:
The only patch in the i915 code between rc4 and rc5 is a tiny VT-d workaround fix for ILK machines, which does fiddle with how the request linked lists are managed.
Can you try reverting eb1711bb94991e93669c5a1b5f84f11be2d51ea1 and see if your problem goes away?