Message-ID: <48438126.3080308@t-online.de>
Date: Mon, 02 Jun 2008 07:12:06 +0200
From: Harald Dunkel <harald.dunkel@t-online.de>
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To: Joe Peterson <joe@skyrush.com>
CC: linux-kernel@vger.kernel.org, Alan Cox <alan@redhat.com>
Subject: Re: 2.6.25.3: su gets stuck for root
References: <48434D57.6030801@skyrush.com>
In-Reply-To: <48434D57.6030801@skyrush.com>
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Hi Joe,

Joe Peterson wrote:
> Hi Harold,
> 
> Doing "ps" while hung shows stty in the "T" state.  "killall -9 stty"
> releases it.
> 

Does strace give you the same output if you attach it to the blocking
stty (strace -p $pid)?

I got


:
ioctl(0, SNDCTL_TMR_START or TCSETS, {B38400 opost isig icanon echo ...}) = ? ERESTARTSYS (To be restarted)
--- SIGTTOU (Stopped (tty output)) @ 0 (0) ---
--- SIGTTOU (Stopped (tty output)) @ 0 (0) ---
:


Regards

Harri

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