[llvm-bugs] Issue 39045 in oss-fuzz: llvm:llvm-opt-fuzzer--x86_64-guard_widening: ASSERT: isCanonical(Name) && "Expected canonical MDString"

[ClusterFuzz-External via monorail via llvm-bugs]

Status: New
Owner: ----
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Labels: ClusterFuzz Reproducible Stability-Memory-MemorySanitizer Engine-libfuzzer OS-Linux Proj-llvm Reported-2021-09-20
Type: Bug

New issue 39045 by ClusterFuzz-External: llvm:llvm-opt-fuzzer--x86_64-guard_widening: ASSERT: isCanonical(Name) && "Expected canonical MDString"
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=39045

Detailed Report: https://oss-fuzz.com/testcase?key=5319790491729920

Project: llvm
Fuzzing Engine: libFuzzer
Fuzz Target: llvm-opt-fuzzer--x86_64-guard_widening
Job Type: libfuzzer_msan_llvm
Platform Id: linux

Crash Type: ASSERT
Crash Address: 
Crash State:
  isCanonical(Name) && "Expected canonical MDString"
  llvm::DIBasicType::getImpl
  llvm::MetadataLoader::MetadataLoaderImpl::parseOneMetadata
  
Sanitizer: memory (MSAN)

Crash Revision: https://oss-fuzz.com/revisions?job=libfuzzer_msan_llvm&revision=202011180625

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5319790491729920

Issue filed automatically.

See https://google.github.io/oss-fuzz/advanced-topics/reproducing for instructions to reproduce this bug locally.
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