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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Consider increasing the size of the static symbolization buffer in sanitizer_common"
href="https://bugs.llvm.org/show_bug.cgi?id=52264">52264</a>
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<th>Summary</th>
<td>Consider increasing the size of the static symbolization buffer in sanitizer_common
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<th>Product</th>
<td>compiler-rt
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<th>Version</th>
<td>unspecified
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<th>Hardware</th>
<td>All
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>compiler-rt
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>andrew.c.morrow@gmail.com
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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<pre>It appears that there are some 16K static buffers for the symbolizer:
-
<a href="https://github.com/llvm/llvm-project/blob/12b44bf5ee3eee46062b5f8f208be20edd0b3e06/compiler-rt/lib/sanitizer_common/sanitizer_symbolizer_internal.h#L122">https://github.com/llvm/llvm-project/blob/12b44bf5ee3eee46062b5f8f208be20edd0b3e06/compiler-rt/lib/sanitizer_common/sanitizer_symbolizer_internal.h#L122</a>
-
<a href="https://github.com/llvm/llvm-project/blob/12b44bf5ee3eee46062b5f8f208be20edd0b3e06/compiler-rt/lib/sanitizer_common/sanitizer_symbolizer_internal.h#L150">https://github.com/llvm/llvm-project/blob/12b44bf5ee3eee46062b5f8f208be20edd0b3e06/compiler-rt/lib/sanitizer_common/sanitizer_symbolizer_internal.h#L150</a>
I have recently encountered some events where it appears that one or more of
these buffers is not sufficient when symbolizing sanitizer failures, leading to
messages like:
==4094==WARNING: Symbolizer buffer too small
Would it be possible to expand these to something larger, maybe 1M? While no
fixed-sized buffer can handle everything, 16K feels very conservative.</pre>
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