Status: New
Owner: ----
CC: k...@google.com, masc...@google.com, jdevlieg...@apple.com,
igm...@gmail.com, mit...@google.com, bigchees...@gmail.com,
eney...@google.com, llvm-b...@lists.llvm.org, j...@chromium.org,
v...@apple.com, mitchphi...@outlook.com, xpl...@gmail.com,
akils...@apple.com
Labels: ClusterFuzz Reproducible Stability-Memory-MemorySanitizer
Engine-libfuzzer OS-Linux Proj-llvm Security_Severity-Medium
Reported-2019-08-18
Type: Bug-Security
New issue 16527 by ClusterFuzz-External: llvm:llvm-isel-fuzzer--aarch64-O2:
Use-of-uninitialized-value in CodeGenPrepare::optimizeInst
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=16527
Detailed Report: https://oss-fuzz.com/testcase?key=6324347450425344
Project: llvm
Fuzzing Engine: libFuzzer
Fuzz Target: llvm-isel-fuzzer--aarch64-O2
Job Type: libfuzzer_msan_llvm
Platform Id: linux
Crash Type: Use-of-uninitialized-value
Crash Address:
Crash State:
CodeGenPrepare::optimizeInst
CodeGenPrepare::runOnFunction
llvm::FPPassManager::runOnFunction
Sanitizer: memory (MSAN)
Recommended Security Severity: Medium
Crash Revision:
https://oss-fuzz.com/revisions?job=libfuzzer_msan_llvm&revision=201906300300
Reproducer Testcase:
https://oss-fuzz.com/download?testcase_id=6324347450425344
Issue filed automatically.
See https://github.com/google/oss-fuzz/blob/master/docs/reproducing.md for
instructions to reproduce this bug locally.
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