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<base href="https://bugs.llvm.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - race condition in writing asan/clang_rt.asan-dynamic-x86_64.vers"
href="https://bugs.llvm.org/show_bug.cgi?id=46333">46333</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>race condition in writing asan/clang_rt.asan-dynamic-x86_64.vers
</td>
</tr>
<tr>
<th>Product</th>
<td>compiler-rt
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Windows NT
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>asan
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>yaxun.liu@amd.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>when building compiler-rt, we saw errors as below:
/usr/bin/ld:/src/out/ubuntu-16.04/16.04/build/lightning/projects/compiler-rt/lib/asan/clang_rt.asan-dynamic-x86_64.vers:447:
syntax error in VERSION script
collect2: error: ld returned 1 exit status
Investigation shows that multiple processes are trying to write to the same
clang_rt.asan-dynamic-x86_64.vers, which corrupted the file and caused build
failure later on:
9653:[2020-06-02T07:04:59.355Z] cd
/src/external/llvm-project/compiler-rt/lib/asan && /usr/bin/python
/src/external/llvm-project/compiler-rt/lib/sanitizer_common/scripts/gen_dynamic_list.py
/src/out/ubuntu-16.04/16.04/build/lightning/lib/clang/11.0.0/lib/linux/libclang_rt.asan_cxx-x86_64.a
--nm-executable /usr/bin/nm -o
/src/out/ubuntu-16.04/16.04/build/lightning/lib/clang/11.0.0/lib/linux/libclang_rt.asan_cxx-x86_64.a.syms
9688:[2020-06-02T07:04:59.355Z] cd
/src/external/llvm-project/compiler-rt/lib/asan && /usr/bin/python
/src/external/llvm-project/compiler-rt/lib/sanitizer_common/scripts/gen_dynamic_list.py
--version-list --extra asan.syms.extra
/src/out/ubuntu-16.04/16.04/build/lightning/lib/clang/11.0.0/lib/linux/libclang_rt.asan-i386.a
/src/out/ubuntu-16.04/16.04/build/lightning/lib/clang/11.0.0/lib/linux/libclang_rt.asan_cxx-i386.a
--nm-executable /usr/bin/nm -o
/src/out/ubuntu-16.04/16.04/build/lightning/projects/compiler-rt/lib/asan/clang_rt.asan-dynamic-i386.vers
9707:[2020-06-02T07:04:59.355Z] cd
/src/external/llvm-project/compiler-rt/lib/asan && /usr/bin/python
/src/external/llvm-project/compiler-rt/lib/sanitizer_common/scripts/gen_dynamic_list.py
--version-list --extra asan.syms.extra
/src/out/ubuntu-16.04/16.04/build/lightning/lib/clang/11.0.0/lib/linux/libclang_rt.asan-i386.a
/src/out/ubuntu-16.04/16.04/build/lightning/lib/clang/11.0.0/lib/linux/libclang_rt.asan_cxx-i386.a
--nm-executable /usr/bin/nm -o
/src/out/ubuntu-16.04/16.04/build/lightning/projects/compiler-rt/lib/asan/clang_rt.asan-dynamic-i386.vers
9713:[2020-06-02T07:04:59.355Z] cd
/src/external/llvm-project/compiler-rt/lib/asan && /usr/bin/python
/src/external/llvm-project/compiler-rt/lib/sanitizer_common/scripts/gen_dynamic_list.py
--version-list --extra asan.syms.extra
/src/out/ubuntu-16.04/16.04/build/lightning/lib/clang/11.0.0/lib/linux/libclang_rt.asan-x86_64.a
/src/out/ubuntu-16.04/16.04/build/lightning/lib/clang/11.0.0/lib/linux/libclang_rt.asan_cxx-x86_64.a
--nm-executable /usr/bin/nm -o
/src/out/ubuntu-16.04/16.04/build/lightning/projects/compiler-rt/lib/asan/clang_rt.asan-dynamic-x86_64.vers
9719:[2020-06-02T07:04:59.355Z] cd
/src/external/llvm-project/compiler-rt/lib/asan && /usr/bin/python
/src/external/llvm-project/compiler-rt/lib/sanitizer_common/scripts/gen_dynamic_list.py
--version-list --extra asan.syms.extra
/src/out/ubuntu-16.04/16.04/build/lightning/lib/clang/11.0.0/lib/linux/libclang_rt.asan-i386.a
/src/out/ubuntu-16.04/16.04/build/lightning/lib/clang/11.0.0/lib/linux/libclang_rt.asan_cxx-i386.a
--nm-executable /usr/bin/nm -o
/src/out/ubuntu-16.04/16.04/build/lightning/projects/compiler-rt/lib/asan/clang_rt.asan-dynamic-i386.vers
9724:[2020-06-02T07:04:59.356Z] cd
/src/external/llvm-project/compiler-rt/lib/asan && /usr/bin/python
/src/external/llvm-project/compiler-rt/lib/sanitizer_common/scripts/gen_dynamic_list.py
--version-list --extra asan.syms.extra
/src/out/ubuntu-16.04/16.04/build/lightning/lib/clang/11.0.0/lib/linux/libclang_rt.asan-x86_64.a
/src/out/ubuntu-16.04/16.04/build/lightning/lib/clang/11.0.0/lib/linux/libclang_rt.asan_cxx-x86_64.a
--nm-executable /usr/bin/nm -o
/src/out/ubuntu-16.04/16.04/build/lightning/projects/compiler-rt/lib/asan/clang_rt.asan-dynamic-x86_64.vers
9734:[2020-06-02T07:04:59.356Z] cd
/src/external/llvm-project/compiler-rt/lib/asan && /usr/bin/python
/src/external/llvm-project/compiler-rt/lib/sanitizer_common/scripts/gen_dynamic_list.py
--version-list --extra asan.syms.extra
/src/out/ubuntu-16.04/16.04/build/lightning/lib/clang/11.0.0/lib/linux/libclang_rt.asan-x86_64.a
/src/out/ubuntu-16.04/16.04/build/lightning/lib/clang/11.0.0/lib/linux/libclang_rt.asan_cxx-x86_64.a
--nm-executable /usr/bin/nm -o
/src/out/ubuntu-16.04/16.04/build/lightning/projects/compiler-rt/lib/asan/clang_rt.asan-dynamic-x86_64.vers
9740:[2020-06-02T07:04:59.356Z] cd
/src/external/llvm-project/compiler-rt/lib/asan && /usr/bin/python
/src/external/llvm-project/compiler-rt/lib/sanitizer_common/scripts/gen_dynamic_list.py
--extra asan.syms.extra
/src/out/ubuntu-16.04/16.04/build/lightning/lib/clang/11.0.0/lib/linux/libclang_rt.asan-x86_64.a
--nm-executable /usr/bin/nm -o
/src/out/ubuntu-16.04/16.04/build/lightning/lib/clang/11.0.0/lib/linux/libclang_rt.asan-x86_64.a.syms</pre>
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