Subject: Re: [Jackit-devel] Re: [linux-audio-dev] 2.4.20 + lowlat +preempt + alsa + jack = dead computer
From: Fernando Pablo Lopez-Lezcano (nando_AT_ccrma.Stanford.EDU)
Date: Sat Jan 04 2003 - 01:17:42 EET
> >I browsed the Kernel Source and there is only one mark_inode_dirty in
> >pipe_write (in fs/pipe.c). So we know where it is hanging...
> >
> >And in __mark_inode_dirty (in fs/inode.c) there is one
> > spin_lock(&inode_lock)
> >call, and I guess that is where the whole thing is hanging. So something
> >is holding that lock... how do I find out who is doing that? Apparently
> >the handling of inode_lock is confined to inode.c. I'll keep reading.
> >
> >Maybe the pipe in question is one of the pipes that jack uses for ipc?
>
> seems *damn* likely ... sorry to just be chiming in with a useless comment!
Do you think the problem might be jack? Some race condition that only
happens (or is much more likely to happen) in 2.4.20? It does sound more
like a kernel bug, but I have not seen a hung machine without having
jack and clients running...
-- Fernando
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