[llvm-bugs] Issue 9239 in oss-fuzz: llvm/llvm-opt-fuzzer--x86_64-sccp: Heap-use-after-free in SCCPSolver::visitCmpInst

[ClusterFuzz-External via monorail via llvm-bugs]

Comment #4 on issue 9239 by ClusterFuzz-External:  
llvm/llvm-opt-fuzzer--x86_64-sccp: Heap-use-after-free in  
SCCPSolver::visitCmpInst
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=9239#c4

ClusterFuzz has detected this issue as fixed in range  
201810120229:201810130232.

Detailed report: https://oss-fuzz.com/testcase?key=5747454174560256

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

Crash Type: Heap-use-after-free READ 8
Crash Address: 0x619000008968
Crash State:
   SCCPSolver::visitCmpInst
   llvm::InstVisitor<SCCPSolver, void>::visit
   SCCPSolver::Solve

Sanitizer: address (ASAN)

Recommended Security Severity: High

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201807020801:201807030756
Fixed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201810120229:201810130232

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=5747454174560256

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

If you suspect that the result above is incorrect, try re-doing that job on  
the test case report page.

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