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Zombie processes "git-upload-pack" makes Gitea unusable after short period of time #9548
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opened 2025-11-02 08:42:37 -06:00 by GiteaMirror
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Reference: github-starred/gitea#9548
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Originally created by @blackandred on GitHub (Sep 10, 2022).
Description
Hi, thanks for this fantastic project. Recently I deployed Gitea rootless using Podman from this playbook https://github.com/riotkit-org/core-services .
The instance is quickly becoming unusable, as the number of zombie processes is increasing. After ~3 minutes from restarting the instance I get:
The processes are appearing when doing
git pushfrom local computer.I see in the log there are EOF's, it may be caused because of my networking which is having sometimes a higher latency.
Gitea Version
1.17.2-rootless
Can you reproduce the bug on the Gitea demo site?
No
Log Gist
https://gist.github.com/blackandred/3593a9b0a73dd913a39860b81f372e20
Screenshots
No response
Git Version
git version 2.36.2
Operating System
Linux 5.4.0-124-generic, Podman 3.4.2
How are you running Gitea?
Database
PostgreSQL
@blackandred commented on GitHub (Sep 10, 2022):
As a very dirt workaround I created this:
@simbelmas commented on GitHub (Sep 21, 2022):
Same issue with Gitea version 1.17.2 built with GNU Make 4.3, go1.18.6 running non root on top of kubernetes.
Since i plugged ArgoCD, i see a lot of 'git-upload-pack' processes and application is not reachable by ssh. UI works.
Gitea is built from source in alpine image.
Used image: quay.io/simbelmas/gitea-alpine:latest
Dockerfile: https://github.com/simbelmas/dockerfiles/blob/latest/gitea-alpine/Dockerfile
@cshazi commented on GitHub (Oct 14, 2022):
Same issue with gitea/gitea:1.17.2-rootless image on top of AWS EKS.
After a few minutes from starting, a bunch of zombie processes appear:
During the creation of a new zombie process, the following log entries were created:
If I stop the argocd repo server, no new zombie processes are created.
ArgoCD handles the upload packet operation in a special way:
https://github.com/argoproj/argo-cd/blob/master/util/git/workaround.go
@bendem commented on GitHub (Oct 25, 2022):
I have started seeing this behavior right after switching from root to rootless docker image. Not sure what's up yet.
@cshazi commented on GitHub (Oct 31, 2022):
An example of a zombie process getting stuck:
Debug log:
I couldn't find a way to get the control before the cancel context function was executed. It would also be good to be able to give the kill signal when the context is finished, but it is not possible:
https://github.com/golang/go/issues/21135
https://github.com/golang/go/issues/22757
In the workaround I found, the context is derived from context.Background() in modules/ssh/ssh.go, and a separate goroutine watch the change of state of the parent context.
Source code:
84714c3a71Can you suggest a better solution to the problem?
@Exagone313 commented on GitHub (Oct 31, 2022):
By following up the discussions, it seems like a solution has been implemented and is planned to be released in Go 1.20: https://github.com/golang/go/issues/50436 (see commit on
55eaae452c).@bendem commented on GitHub (Feb 13, 2023):
We haven't seen this issue for a while. Our last update (to 1.18.2) 3 weeks ago seems to have fixed it:
@lunny commented on GitHub (Feb 13, 2023):
Close as looks like it has been resolved. Please feel free to reopen it if it's still a problem.
@bendem commented on GitHub (Feb 13, 2023):
For reference, I'm gonna go on a limb and guess this was fixed by #20695