Messages in this thread | | | Date | Mon, 16 Nov 2020 14:29:20 -0300 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [PATCH] perf test: Avoid an msan warning in a copied stack. |
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Em Fri, Nov 13, 2020 at 10:20:53AM -0800, Ian Rogers escreveu: > This fix is for a failure that occurred in the DWARF unwind perf test. > Stack unwinders may probe memory when looking for frames. Memory > sanitizer will poison and track uninitialized memory on the stack, and > on the heap if the value is copied to the heap. This can lead to false > memory sanitizer failures for the use of an uninitialized value. Avoid > this problem by removing the poison on the copied stack. > > The full msan failure with track origins looks like:
Thanks, applied.
- Arnaldo
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