Messages in this thread | | | Date | Tue, 25 Oct 2016 17:20:10 -0700 | From | Krister Johansen <> | Subject | Re: [PATCH v2 perf/core] perf script: fix a use after free crash. |
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On Tue, Oct 11, 2016 at 02:28:39AM -0700, 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 has been a couple of weeks since I sent out v2 of this patch. I understand that folks here have plenty of irons in the fire, but I wanted to double-check that nobody was waiting on me for additional information or changes.
Thanks,
-K
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