bugGNU Screen - Bugs: bug #25089, screen produces zombies


bug #25089: screen produces zombies

Submitted by:  Michal Svoboda <pht1>
Submitted on:  Sun 14 Dec 2008 07:36:20 AM UTC  
Category:  None Severity:  3 - Normal
Priority:  5 - Normal Status:  Need Investigation
Privacy:  Public Assigned to:  None
Open/Closed:  Open Release:  4.0.3
Fixed Release:  None Planned Release:  Later
Work Required:  1 - Days

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Mon 26 Jan 2009 09:54:58 PM UTC, comment #2:

Could the 'zombie' command be responsible for this? Could you try unsetting the zombie setting (using the 'zombie' command without any params), then terminating the process?

Sadrul Habib Chowdhury <sadrul>
Project Administrator
Thu 15 Jan 2009 10:55:24 PM UTC, comment #1:

No ideas, really, other than staring at the source for a while to see if anything jumps out (or, perhaps, to see if gdb allows it to be reproduced, unlike strace).

Micah Cowan <micahcowan>
Sun 14 Dec 2008 07:36:20 AM UTC, original submission:

I came across a funny thing: each process started by screen in a new window (eg. /bin/bash) will become a zombie after exiting it (eg. typing exit).

It looks like some sort of a race condition, because when I tried to strace the SCREEN process, it would correctly wait() and reclaim the process (in fact, all of the zombies were reclaimed). Also, my computer is quite slow:

model name : Pentium II (Klamath)
cpu MHz : 233.284

Other useful info:
Linux (vanilla)
Screen version 4.00.03 (FAU) 23-Oct-06 (from Mandriva 2009.0)

Any ideas where to look at, how to pinpoint the problem?

Michal Svoboda <pht1>


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    Follow 3 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2009-01-15 micahcowan StatusNone => Need Investigation
        Planned ReleaseNone => Later
        Work RequiredNone => 1 - Days

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