[llvm-bugs] Issue 21075 in oss-fuzz: llvm:clang-objc-fuzzer: Segv on unknown address in llvm::llvm_unreachable_internal
ClusterFuzz-External via monorail via llvm-bugs
llvm-bugs at lists.llvm.org
Thu Mar 5 19:21:44 PST 2020
Status: New
Owner: ----
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Labels: ClusterFuzz Reproducible Stability-Memory-MemorySanitizer Engine-libfuzzer OS-Linux Proj-llvm Security_Severity-High Reported-2020-03-06
Type: Bug-Security
New issue 21075 by ClusterFuzz-External: llvm:clang-objc-fuzzer: Segv on unknown address in llvm::llvm_unreachable_internal
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=21075
Detailed Report: https://oss-fuzz.com/testcase?key=5752309763276800
Project: llvm
Fuzzing Engine: libFuzzer
Fuzz Target: clang-objc-fuzzer
Job Type: libfuzzer_msan_llvm
Platform Id: linux
Crash Type: Segv on unknown address
Crash Address:
Crash State:
llvm::llvm_unreachable_internal
clang::Sema::CheckAbsoluteValueFunction
clang::Sema::CheckFunctionCall
Sanitizer: memory (MSAN)
Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_msan_llvm&range=201911200438:201911230451
Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5752309763276800
Issue filed automatically.
See https://google.github.io/oss-fuzz/advanced-topics/reproducing for instructions to reproduce this bug locally.
When you fix this bug, please
* mention the fix revision(s).
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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. Comments on individual Monorail issues are not monitored.
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