envoyproxy/envoy

filter_fuzz_test fails for ext_proc filter

Open

#20,737 opened on Apr 8, 2022

View on GitHub
 (2 comments) (0 reactions) (0 assignees)C++ (5,373 forks)batch import
bughelp wanted

Repository metrics

Stars
 (27,997 stars)
PR merge metrics
 (Avg merge 8d) (378 merged PRs in 30d)

Description

Description: filter_fuzz_test picks http filters by random to fuzz. The test fails when it picks the ext_proc filter, as the filter is instantiated with a mock Grpc::AsyncClientManager, which returns a null grpc client. The test seg faults when invoking a method on the null grpc client.

Repro steps: Replace seed % filter_names.size() with 5 here to force the test to pick ext_proc and reproduce the failure.

Contributor guide

Research direction
Inspect the failing test and trace the handler path to identify where the null grpc client is accessed without a null check.
Tech stack
cppgrpc
Domain
backendnetworking
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
C++
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70