[llvm-bugs] Issue 64952 in oss-fuzz: llvm:llvm-opt-fuzzer--x86_64-simplifycfg: ASSERT: Val && "isa<> used on a null pointer"

[ClusterFuzz-External via monorail via llvm-bugs]

Status: New
Owner: ----
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Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible OS-Linux Proj-llvm Engine-honggfuzz Reported-2023-12-10
Type: Bug

New issue 64952 by ClusterFuzz-External: llvm:llvm-opt-fuzzer--x86_64-simplifycfg: ASSERT: Val && "isa<> used on a null pointer"
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=64952

Detailed Report: https://oss-fuzz.com/testcase?key=4579166431084544

Project: llvm
Fuzzing Engine: honggfuzz
Fuzz Target: llvm-opt-fuzzer--x86_64-simplifycfg
Job Type: honggfuzz_asan_llvm
Platform Id: linux

Crash Type: ASSERT
Crash Address: 
Crash State:
  Val && "isa<> used on a null pointer"
  llvm::MetadataLoader::MetadataLoaderImpl::parseMetadataAttachment
  llvm::MetadataLoader::parseMetadataAttachment
  
Sanitizer: address (ASAN)

Crash Revision: https://oss-fuzz.com/revisions?job=honggfuzz_asan_llvm&revision=202312090629

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=4579166431084544

Issue filed automatically.

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