[llvm-bugs] Issue 38057 in oss-fuzz: llvm:llvm-opt-fuzzer--x86_64-instcombine: Null-dereference READ in llvm::ConstantVector::getImpl

[ClusterFuzz-External via monorail via llvm-bugs]

Status: New
Owner: ----
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Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible Engine-libfuzzer OS-Linux Proj-llvm Reported-2021-09-03
Type: Bug

New issue 38057 by ClusterFuzz-External: llvm:llvm-opt-fuzzer--x86_64-instcombine: Null-dereference READ in llvm::ConstantVector::getImpl
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=38057

Detailed Report: https://oss-fuzz.com/testcase?key=6253408680542208

Project: llvm
Fuzzing Engine: libFuzzer
Fuzz Target: llvm-opt-fuzzer--x86_64-instcombine
Job Type: libfuzzer_asan_llvm
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  llvm::ConstantVector::getImpl
  llvm::ConstantVector::get
  llvm::InstCombinerImpl::visitInsertElementInst
  
Sanitizer: address (ASAN)

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=202011280603:202011290606

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=6253408680542208

Issue filed automatically.

See https://google.github.io/oss-fuzz/advanced-topics/reproducing for instructions to reproduce this bug locally.
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