Re: freeze when strace X

From: Matthew Garrett
Date: Wed Jun 09 2010 - 16:54:14 EST

On Wed, Jun 09, 2010 at 10:47:23PM +0200, Thomas Gleixner wrote:
> On Wed, 9 Jun 2010, Matthew Garrett wrote:
> > 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.
> Nothing to do with kernel locks. strace hooks into the syscall and
> intercepts the data, so X is stopped at that point. Now try to send
> output to a program which you stopped yourself :)

Oh, yeah, and ctrl+alt+fwhatever is handled by X.

Matthew Garrett | mjg59@xxxxxxxxxxxxx
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