Re: freeze when strace X

From: Matthew Garrett
Date: Wed Jun 09 2010 - 16:06:18 EST

On Wed, Jun 09, 2010 at 10:02:21PM +0200, Ortwin Glück wrote:
> On 09.06.2010 21:52, Matthew Garrett wrote:
> > Just to make sure, you're not trying to strace X from within X, are you?
> Oh... now that you mention it... Is that a silly thing to do?
> strace X from a different terminal works fine :-)
> But freezing the system because of that? I mean an error message, log, anything
> would be "nice".

strace needs to output text via X, which generates output which needs to
be output via X... and you'll tend to deadlock. If X is holding any
interesting kernel locks at that point then it wouldn't surprise me if
the machine ends up dead.

Matthew Garrett | mjg59@xxxxxxxxxxxxx
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