Hey Arnaldo, On Thu, Jan 05, 2017 at 10:23:31PM -0800, Krister Johansen wrote: > If dso__load_kcore frees all of the existing maps, but one has already > been attached to a callchain cursor node, then we can get a SIGSEGV in > any function that happens to try to use this invalid cursor. Use the > existing map refcount mechanism to forestall cleanup of a map until the > cursor iterates past the node.
It's been a couple of weeks since I sent you the v3 of this patch. Last time I fiddled with it, I was able to reproduce your 'perf top' core, and was able to verify that the latest patch I sent out could survive running 'perf top' through the course of a full kernel build. Is there anything else I can do to help with this one? Thanks, -K
