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Date: Tue, 13 May 2008 08:47:29 +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 Hi, On Tue, May 13, 2008 at 8:17 AM, Harald Dunkel <harald.dunkel@...nline.de> wrote: > Hi folks, > > I haven't seen it mentioned here (hopefully I wasn't too blind to see): > > If I run "su someuser" as root, then it gets stuck. No prompt. I cannot > interrupt it with ^C or ^Z either. /var/log/auth.log says: ... > So obviously 'stty' is to blame here (called from root's .bashrc, as > it seems). But for 2.6.24.4 there is no such problem. > > > Maybe you could spread some light here? Can you try to run "strace su someuser" instead? This should produce some screenfulls of information, but will also pinpoint the location of the hang in userspace if it's an error somewhere in the path of a system call. Strace will output to stderr, so use 2>strace.txt to capture it to a file. If you do this as root, you should not have to enter any passwords, so they won't be logged either. 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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