linux-kernel - Re: 2.6.25.3: su gets stuck for root

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Message-ID: <19f34abd0805140034j75d97ecbw5a03c200645768cb@mail.gmail.com>
Date:	Wed, 14 May 2008 09:34:57 +0200
From:	"Vegard Nossum" <vegard.nossum@...il.com>
To:	"Harald Dunkel" <harald.dunkel@...nline.de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: 2.6.25.3: su gets stuck for root

On Tue, May 13, 2008 at 7:43 PM, Harald Dunkel
<harald.dunkel@...nline.de> wrote:
> Vegard Nossum wrote:
>
> > Can you try to run "strace su someuser" instead?
>
>  I tried, but its a Heisenbug: If I run it with strace (with or without
>  -f), then it doesn't get stuck.

Ah, tough luck. What if you attach an strace to the already stuck
process? Like strace -p pid. It's a long shot, but worth a try, I
suppose.

You could also try to use sysrq to output some useful information
about the stuck process. See Documentation/sysrq.txt for more
information. Gotta run, good luck!

Vegard

-- 
"The animistic metaphor of the bug that maliciously sneaked in while
the programmer was not looking is intellectually dishonest as it
disguises that the error is the programmer's own creation."
	-- E. W. Dijkstra, EWD1036
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