> Good question! I tried disabling CPA self-test and the BUG does not > show up for 10000 boots. So this should be the root cause. >
The test is very different now than what I wrote originally, but I would generally expect any bug to be in change_page_attr(), not be in the self test. > > > [ 36.776024] *pde = 0e3e1067 *pte = 061e7260 The oops is in a 2MB page that should not have changed by CPA in theory (it just adds 4KB pages) I suppose you could log the addresses touched by the test and compare to the oops addresses. Most likely the reason you don't see it all the time is that the test is randomized. So you could make it more stable by fixing the seed in pageattr-test and perhaps changing it to use more pages. > > > [ 36.776024] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2007 Could be also some virtualization problem? -andi -- [email protected] -- Speaking for myself only -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
