[llvm-bugs] Issue 15662 in oss-fuzz: llvm/llvm-isel-fuzzer--x86_64-O2: ASSERT: N2C->getAPIntValue().ult(NumElts) && "Out of range element index"

[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-2019-07-04
Type: Bug

New issue 15662 by ClusterFuzz-External: llvm/llvm-isel-fuzzer--x86_64-O2:  
ASSERT: N2C->getAPIntValue().ult(NumElts) && "Out of range element index"
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15662

Detailed report: https://oss-fuzz.com/testcase?key=5660357915312128

Project: llvm
Fuzzer: libFuzzer_llvm_llvm-isel-fuzzer--x86_64-O2
Fuzz target binary: llvm-isel-fuzzer--x86_64-O2
Job Type: libfuzzer_asan_llvm
Platform Id: linux

Crash Type: ASSERT
Crash Address:
Crash State:
   N2C->getAPIntValue().ult(NumElts) && "Out of range element index"
   llvm::X86TargetLowering::LowerINSERT_VECTOR_ELT
   llvm::X86TargetLowering::LowerOperation

Sanitizer: address (ASAN)

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201907030308:201907040311

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=5660357915312128

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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