[llvm-bugs] Issue 31484 in oss-fuzz: llvm:clangd-fuzzer: Direct-leak with empty stacktrace

[ClusterFuzz-External via monorail via llvm-bugs]

Status: New
Owner: ----
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Labels: ClusterFuzz Stability-Memory-AddressSanitizer Stability-Memory-LeakSanitizer Unreproducible Engine-libfuzzer OS-Linux Proj-llvm Reported-2021-02-27
Type: Bug

New issue 31484 by ClusterFuzz-External: llvm:clangd-fuzzer: Direct-leak with empty stacktrace
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31484

Detailed Report: https://oss-fuzz.com/testcase?key=4774942878072832

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

Crash Type: Direct-leak
Crash Address: 
Crash State:
  NULL
Sanitizer: address (ASAN)

Crash Revision: https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&revision=202102260627

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=4774942878072832

Issue filed automatically.

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

************************* UNREPRODUCIBLE *************************
Note: This crash might not be reproducible with the provided testcase. That said, for the past 14 days, we've been seeing this crash frequently.

It may be possible to reproduce by trying the following options:
- Run testcase multiple times for a longer duration.
- Run fuzzing without testcase argument to hit the same crash signature.

If it still does not reproduce, try a speculative fix based on the crash stacktrace and verify if it works by looking at the crash statistics in the report. We will auto-close the bug if the crash is not seen for 14 days.
******************************************************************
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If you need to contact the OSS-Fuzz team with a question, concern, or any other feedback, please file an issue at https://github.com/google/oss-fuzz/issues. Comments on individual Monorail issues are not monitored.

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