[llvm-bugs] Issue 3721 in oss-fuzz: llvm/llvm-isel-fuzzer--x86_64-O2: ASSERT: idx < size()

[monor… via monorail via llvm-bugs]

Status: New
Owner: ----
CC: kcc at google.com,  mascasa at google.com,  jdevlieg... at apple.com,   
llvm-b... at lists.llvm.org,  v... at apple.com
Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible  
Engine-libfuzzer Proj-llvm Reported-2017-10-22

New issue 3721 by monor... at clusterfuzz-external.iam.gserviceaccount.com:  
llvm/llvm-isel-fuzzer--x86_64-O2: ASSERT: idx < size()
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3721

Detailed report: https://oss-fuzz.com/testcase?key=5211677902503936

Project: llvm
Fuzzer: libFuzzer_llvm_llvm-isel-fuzzer--x86_64-O2
Fuzz target binary: llvm-isel-fuzzer--x86_64-O2
Job Type: libfuzzer_asan_llvm
Platform Id: linux

Crash Type: ASSERT
Crash Address:
Crash State:
   idx < size()
   BitcodeReaderMetadataList::getMetadataFwdRef
   llvm::MetadataLoader::MetadataLoaderImpl::getMetadataFwdRefOrLoad

Sanitizer: address (ASAN)

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201710160455:201710190451

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=5211677902503936

Issue filed automatically.

See https://github.com/google/oss-fuzz/blob/master/docs/reproducing.md for  
more information.

When you fix this bug, please
   * mention the fix revision(s).
   * state whether the bug was a short-lived regression or an old bug in any  
stable releases.
   * add any other useful information.
This information can help downstream consumers.

If you have questions for the OSS-Fuzz team, please file an issue at  
https://github.com/google/oss-fuzz/issues.

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