[llvm-bugs] Issue 25150 in oss-fuzz: llvm:llvm-isel-fuzzer--wasm32-O2: ASSERT: isPowerOf2_32(EltSizeInBits) && EltSizeInBits > 1 && "Expecting the type bitwidt

ClusterFuzz-External via monorail via llvm-bugs llvm-bugs at lists.llvm.org
Sat Aug 22 10:12:12 PDT 2020


Status: New
Owner: ----
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Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible Engine-libfuzzer OS-Linux Proj-llvm Reported-2020-08-22
Type: Bug

New issue 25150 by ClusterFuzz-External: llvm:llvm-isel-fuzzer--wasm32-O2: ASSERT: isPowerOf2_32(EltSizeInBits) && EltSizeInBits > 1 && "Expecting the type bitwidt
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25150

Detailed Report: https://oss-fuzz.com/testcase?key=5403561104769024

Project: llvm
Fuzzing Engine: libFuzzer
Fuzz Target: llvm-isel-fuzzer--wasm32-O2
Job Type: libfuzzer_msan_llvm
Platform Id: linux

Crash Type: ASSERT
Crash Address: 
Crash State:
  isPowerOf2_32(EltSizeInBits) && EltSizeInBits > 1 && "Expecting the type bitwidt
  llvm::TargetLowering::expandROT
  llvm::DAGTypeLegalizer::PromoteIntegerResult
  
Sanitizer: memory (MSAN)

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_msan_llvm&range=202008210608:202008220601

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5403561104769024

Issue filed automatically.

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