linux-kernel - Re: [PATCH 0/1] SIGWINCH problem with terminal apps still alive

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Date:	Fri, 10 Oct 2008 10:29:06 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Adam Tlałka <atlka@...gda.pl>
Cc:	Adam Tlałka <atlka@...gda.pl>,
	linux-kernel@...r.kernel.org, torvalds@...l.org
Subject: Re: [PATCH 0/1] SIGWINCH problem with terminal apps still alive

On Fri, 10 Oct 2008 03:12:34 +0200
Adam Tlałka <atlka@...gda.pl> wrote:

> Welcome,
> 
> now we have 2.6.26.6 kernel and still terminal resize leads to
> undesired effects. It is very inconvenient to wait for 2.6.27 for
> corrections.
> 
> As Alan Cox previously said mutexes generally work but as we can
> observe in case of kill_pgrp() call inside mutex lock we got
> race because of rescheduling so lock is not working here.
> Rearanging code so the variable change is placed before kill_pgrp()
> call removes mentioned race situaction.   
> 
> Signed-off-by: Adam Tla/lka <atlka@...gda.pl>
> 
> I strongly suggest to patch actual 2.6.26.x kernel to remove this very
> nasty pts behaviour.

NAK again

Moving the copies around simply moves the race, it might be that it fixes
your box and unfixes other peoples.
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