On Sun, 28 Jul 2019, Josh Poimboeuf wrote: > On Wed, Jul 17, 2019 at 01:01:27PM +0200, Miroslav Benes wrote: > > > On a related note, do you think it would be feasible to extend (in > > > another patchset) the reliable stack unwinding code a bit so that we > > > could feed it pre-baked stacks ... then we could verify that the code > > > was finding interesting scenarios. That was a passing thought I had > > > back when Nicolai and I were debugging the ppc64le exception frame > > > marker bug, but didn't think it worth the time/effort at the time. > > > > That is an interesting thought. It would help the testing a lot. I will > > make a note in my todo list. > > Another idea I had for reliable unwinder testing: add a > CONFIG_RELIABLE_STACKTRACE_DEBUG option which does a periodic stack > trace and warns if it doesn't reach the end. It could triggered from a > periodic NMI, or from schedule(). Noted as well. Miroslav
