Status: New
Owner: ----
CC: k...@google.com, masc...@google.com, jdevlieg...@apple.com, igm...@gmail.com, llvm-b...@lists.llvm.org, v...@apple.com, mitchphi...@outlook.com, xpl...@gmail.com, akils...@apple.com Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible Engine-libfuzzer Proj-llvm Reported-2018-04-12
Type: Bug

New issue 7604 by ClusterFuzz-External: llvm/clang-proto-fuzzer: Null-dereference READ in llvm::SSAUpdaterBulk::RewriteAllUses
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=7604

Detailed report: https://oss-fuzz.com/testcase?key=5561606936199168

Project: llvm
Fuzzer: libFuzzer_llvm_clang-proto-fuzzer
Fuzz target binary: clang-proto-fuzzer
Job Type: libfuzzer_asan_llvm
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000011
Crash State:
  llvm::SSAUpdaterBulk::RewriteAllUses
  llvm::JumpThreadingPass::ThreadEdge
  llvm::JumpThreadingPass::ProcessThreadableEdges

Sanitizer: address (ASAN)

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201804110524:201804120529

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5561606936199168

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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