[llvm-bugs] Issue 13908 in oss-fuzz: llvm/llvm-opt-fuzzer--x86_64-gvn: ASSERT: VI != valueNumbering.end() && "Value not numbered?"

[ClusterFuzz-External via monorail via llvm-bugs]

Status: New
Owner: ----
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igm... at gmail.com, mitchp at google.com, bigchees... at gmail.com,  
eneyman at google.com, llvm-b... at lists.llvm.org, jfb at chromium.org,  
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Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible  
Engine-libfuzzer Proj-llvm Reported-2019-03-26
Type: Bug

New issue 13908 by ClusterFuzz-External: llvm/llvm-opt-fuzzer--x86_64-gvn:  
ASSERT: VI != valueNumbering.end() && "Value not numbered?"
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=13908

Detailed report: https://oss-fuzz.com/testcase?key=5697424141582336

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

Crash Type: ASSERT
Crash Address:
Crash State:
   VI != valueNumbering.end() && "Value not numbered?"
   llvm::GVN::ValueTable::lookup
   llvm::GVN::performScalarPRE

Sanitizer: address (ASAN)

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201802050757:201802060728

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=5697424141582336

Issue filed automatically.

See https://github.com/google/oss-fuzz/blob/master/docs/reproducing.md for  
instructions to reproduce this bug locally.

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 need to contact the OSS-Fuzz team with a question, concern, or any  
other feedback, please file an issue at  
https://github.com/google/oss-fuzz/issues.

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