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infra: stop patching llvm-symbolizer (#5839) 

* infra: stop patching llvm-symbolizer

to prevent it from failing to start up with
```
NEW_FUNC[1/1]: llvm-symbolizer: symbol lookup error: /tmp/not-out/instrumented_libraries/lib/x86_64-linux-gnu/libz.so.1: undefined symbol: __msan_va_arg_overflow_size_tls
==45==WARNING: external symbolizer didn't start up correctly!
```

Closes https://github.com/google/oss-fuzz/issues/5349

* infra: reformat patch_build.py with yapf

to make the presubmit check happy
This commit is contained in:
Evgeny Vereshchagin 2021-05-26 02:06:59 +03:00 committed by GitHub
parent f8815194c4
commit ff25180bd7
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 13 additions and 7 deletions
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20
infra/base-images/base-sanitizer-libs-builder/patch_build.py
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@ -36,7 +36,8 @@ def IsElf(file_path):
def Ldd(binary_path):
"""Run ldd on a file."""
try:
output = subprocess.check_output(['ldd', binary_path], stderr=subprocess.STDOUT)
output = subprocess.check_output(['ldd', binary_path],
stderr=subprocess.STDOUT)
except subprocess.CalledProcessError:
print('Failed to call ldd on', binary_path, file=sys.stderr)
return []
@ -59,7 +60,7 @@ def FindLib(path):
candidate_path = os.path.join(MSAN_LIBS_PATH, path[1:])
if os.path.exists(candidate_path):
return candidate_path
for lib_dir in os.listdir(MSAN_LIBS_PATH):
candidate_path = os.path.join(MSAN_LIBS_PATH, lib_dir, path[1:])
if os.path.exists(candidate_path):
@ -78,7 +79,8 @@ def PatchBinary(binary_path, instrumented_dir):
instrumented_path = FindLib(path)
if not instrumented_path:
print('WARNING: Instrumented library not found for', path,
print('WARNING: Instrumented library not found for',
path,
file=sys.stderr)
continue
@ -105,9 +107,9 @@ def PatchBinary(binary_path, instrumented_dir):
print('Patching rpath for', binary_path, 'from', existing_rpaths, 'to',
processed_rpaths)
subprocess.check_call(
['patchelf', '--force-rpath', '--set-rpath',
processed_rpaths, binary_path])
subprocess.check_call([
'patchelf', '--force-rpath', '--set-rpath', processed_rpaths, binary_path
])
def PatchBuild(output_directory):
@ -119,6 +121,9 @@ def PatchBuild(output_directory):
for root_dir, _, filenames in os.walk(output_directory):
for filename in filenames:
if filename == "llvm-symbolizer":
continue
file_path = os.path.join(root_dir, filename)
if os.path.islink(file_path):
@ -131,7 +136,8 @@ def PatchBuild(output_directory):
def main():
parser = argparse.ArgumentParser('patch_build.py', description='MSan build patcher.')
parser = argparse.ArgumentParser('patch_build.py',
description='MSan build patcher.')
parser.add_argument('output_dir', help='Output directory.')
args = parser.parse_args()