On Thu, Jan 11, 2018 at 01:21:12PM -0600, Josh Poimboeuf wrote: > Yuck. This time it was stack recursion on the entry stack. In the > previous error, recursion was detected on the IRQ stack. Otherwise they > look quite similar. > > Was that also with nopti?
Both with pti enabled, nopti makes things work again. > I haven't had a chance to try it yet, any idea if these would be > recreatable in a VM? Good question; typically we run the perf fuzzer on read hardware because the PMU doesn't virtualize much. But if software perf is enough to trigger this, that would certainly help.
