rr-debugger / rr-debugger/rr

Error when recording: "The futex facility returned an unexpected error code."

Open
#3,358 40 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Dominant language
C++
Stars
10.7k
Forks
662
Avg merge
2d 3h
Merged PRs (30d)
2

Description

I am running the debian binaries and master branch on my Ubuntu 22.04 x86_64 machine. I am getting this error upon upgrading to 5.6.0. I downgraded to 5.5.0 and it seems to be working.

According to the last comment in this issue it's to do with a mismatch between some libraries or glibc versions:
https://github.com/rr-debugger/rr/issues/2767

With version 5.6.0:

↳ rr record integration-service config.yaml
rr: Saving execution to trace directory `/home/russ/.local/share/rr/integration-service-4'.
[Integration Service][INFO] [is::sh::ROS2] Created node '/is_ros2_node_1804289383' with Domain ID: 0
The futex facility returned an unexpected error code.
zsh: IOT instruction  rr record integration-service config.yaml

With version 5.5.0 (segfault is in my code):

↳ rr record integration-service config.yaml
rr: Saving execution to trace directory `/home/russ/.local/share/rr/integration-service-5'.
[Integration Service][INFO] [is::sh::ROS2] Created node '/is_ros2_node_1804289383' with Domain ID: 0
[Integration Service][INFO] [is::sh::ROS2] Configured!
zsh: segmentation fault  rr record integration-service config.yaml

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing rr record integration-service config.yaml on Ubuntu 22.04 x86_64 with rr 5.6.0, then compare the behavior with 5.5.0. Read the linked issue #2767 for the reported library or glibc mismatch context; done means the futex error no longer occurs with the 5.6.0 binaries.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp, debian, linux, ubuntu
Domain
devtools, operating-systems
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
28/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.