Re: realtime-preempt 2.6.16-rt7-10 bug?

[Lee Revell]

On Tue, 2006-03-28 at 15:57 -0500, Steven Rostedt wrote:
> On Wed, 2006-03-29 at 02:33 +1100, Shayne O'Connor wrote:
> > i've compiled the 2.6.16 kernel with the realtime-preempt patches, but
> > have run into some problems while using Ardour for realtime audio.
> > Ardour crashes whenever i stop recording, and after running dmesg i'm
> > suspecting a bug in the realtime patch (i've tried rt7 and rt10, both
> > have the same problem):
> > 
> 
> Hmm, this may be a bug in Ardour.  Since it's for realtime audio, I
> assume that it knows about the timeofday hack, which is the only way to
> get this bug.  The user application set itself to be uninterruptible by
> calling gettimeofday with the two pointers and the integer 1.  This sets
> the task's flag to be uninterruptible (PF_NOSCHED).  But then it did a
> write to the file system (ext3) which did a schedule. Thus you got a
> BUG.

Specifically it unlinked a file.

Shayne, is your /tmp a tmpfs or ext3?

Lee

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