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Subject: Re: v2.6.21.5-rt19 (sched_getaffinity?)
From: Fernando Lopez-Lezcano <nando@ccrma.Stanford.EDU>
To: Ingo Molnar <mingo@elte.hu>
Cc: nando@ccrma.Stanford.EDU, Gabriel C <nix.or.die@googlemail.com>,
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Date: Tue, 17 Jul 2007 12:47:48 -0700
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On Tue, 2007-07-17 at 21:32 +0200, Ingo Molnar wrote:
> * Fernando Lopez-Lezcano <nando@ccrma.Stanford.EDU> wrote:
> 
> > I do get flash 9 (I know, not the best example) and tomboy to hang as 
> > reported by one of my Planet CCRMA users - flash 9 tested working on 
> > stock fedora 7 kernel - and both seem to hang in the same system call:
> > 
> > sched_getaffinity(3528, 32, <unfinished ...>
> > 
> > Full output of strace attached for both cases.
> 
> hm, that's weird. Is it completely unkillable at that time? Could you do 
> a few things: enable CONFIG_PROVE_LOCKING (lockdep), and also try to get 
> a full task state dump via:
> 
>   echo t > /proc/sysrq-trigger
> 
> thanks,

kill -9 does nothing. If there's another way to kill something let me
know :-) I'll try to get the dump asap. 

Hope you had a good time over the long weekend, you certainly deserve
some rest (and congrats over the scheduler inclusing in mainline!)

-- Fernando