bugGNU Screen - Bugs: bug #38568, ForkWindow: fix race with pty...

 
 

bug #38568: ForkWindow: fix race with pty creation

Submitted by:  Stas Sergeev <stsp>
Submitted on:  Fri 22 Mar 2013 11:35:31 AM UTC  
 
Category:  None Severity:  3 - Normal
Priority:  5 - Normal Status:  None
Privacy:  Public Assigned to:  None
Open/Closed:  Open Release:  None
Fixed Release:  None Planned Release:  None
Work Required:  None

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Fri 22 Mar 2013 11:35:31 AM UTC, original submission:

Hi.

There is a race condition exist, that is the parent
process can be too quick to do "exec" and "kill" in
a rapid succession. In this case the "kill" may close
the pty master when child have not yet opened slave.
The attached patch is a hackish attempt to protect
the pty creation with semaphore.

Stas Sergeev <stsp>

 

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    Follows 1 latest change.

    Date Changed by Updated Field Previous Value => Replaced by
    2013-03-22 stsp Attached File- => Added 0001-ForkWindow-fix-race-with-pty-creation.patch, #27652

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