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Merge pull request #8539 from ClickHouse/msan-libunwind

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Avoid MSan report for data from libunwind
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alexey-milovidov 2020-01-06 13:05:40 +03:00 committed by GitHub
commit 8f0d4995b8
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1 changed files with 4 additions and 0 deletions
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4
dbms/src/Common/StackTrace.cpp
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@ -4,6 +4,7 @@
#include <Common/Elf.h>
#include <Common/SymbolIndex.h>
#include <Common/config.h>
#include <Common/MemorySanitizer.h>
#include <common/SimpleCache.h>
#include <common/demangle.h>
#include <Core/Defines.h>
@ -226,6 +227,7 @@ void StackTrace::tryCapture()
size = 0;
#if USE_UNWIND
size = unw_backtrace(frames.data(), capacity);
__msan_unpoison(frames.data(), size * sizeof(frames[0]));
#endif
}
@ -331,6 +333,8 @@ std::string StackTrace::toString() const
std::string StackTrace::toString(void ** frames_, size_t offset, size_t size)
{
__msan_unpoison(frames_, size * sizeof(*frames_));
StackTrace::Frames frames_copy{};
for (size_t i = 0; i < size; ++i)
frames_copy[i] = frames_[i];