[llvm-bugs] Issue 15361 in oss-fuzz: llvm/llvm-isel-fuzzer--aarch64-gisel: ASSERT: II != MBB.end() && "Didn't find the user in the MBB"

ClusterFuzz-External via monorail via llvm-bugs llvm-bugs at lists.llvm.org
Tue Jun 18 08:18:17 PDT 2019


Status: New
Owner: ----
CC: kcc at google.com, mascasa at google.com, jdevlieg... at apple.com,  
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Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible  
Engine-libfuzzer OS-Linux Proj-llvm Reported-2019-06-18
Type: Bug

New issue 15361 by ClusterFuzz-External:  
llvm/llvm-isel-fuzzer--aarch64-gisel: ASSERT: II != MBB.end() && "Didn't  
find the user in the MBB"
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15361

Detailed report: https://oss-fuzz.com/testcase?key=5644627001999360

Project: llvm
Fuzzer: libFuzzer_llvm_llvm-isel-fuzzer--aarch64-gisel
Fuzz target binary: llvm-isel-fuzzer--aarch64-gisel
Job Type: libfuzzer_asan_llvm
Platform Id: linux

Crash Type: ASSERT
Crash Address:
Crash State:
   II != MBB.end() && "Didn't find the user in the MBB"
   llvm::Localizer::localizeIntraBlock
   llvm::Localizer::runOnMachineFunction

Sanitizer: address (ASAN)

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201906170258:201906180300

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=5644627001999360

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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