Re: splice/tee bugs?

[Jens Axboe <axboe@suse.de>]

On Sat, Jul 08 2006, Luiz Fernando N. Capitulino wrote:
> 
>  Hi Jens,
> 
> On Sat, 8 Jul 2006 08:41:32 +0200
> Jens Axboe <axboe@suse.de> wrote:
> 
> | On Fri, Jul 07 2006, Luiz Fernando N. Capitulino wrote:
> | > On Fri, 7 Jul 2006 04:07:49 -0700
> | > Andrew Morton <akpm@osdl.org> wrote:
> | > 
> | > | On Fri, 07 Jul 2006 09:07:03 +0200
> | > | "Michael Kerrisk" <mtk-manpages@gmx.net> wrote:
> | > | 
> | > | > c) Occasionally the command line just hangs, producing no output.
> | > | >    In this case I can't kill it with ^C or ^\.  This is a 
> | > | >    hard-to-reproduce behaviour on my (x86) system, but I have 
> | > | >    seen it several times by now.
> | > | 
> | > | aka local DoS.  Please capture sysrq-T output next time.
> | > 
> | >  If I run lots of them in parallel, I get the following OOPs in a few
> | > seconds:
> | 
> | With the patch posted? You need the i vs nrbufs fix.
> 
>  Yes, it fixes the problem. I didn't try it before because I thought
> you were going to double check it [1].

Yeah the patch needs reworking, however the isolated i vs nrbufs fix is
safe enough on its own. I'll post a full patch for inclusion, I'm afraid
I wont be able to fully test it enough for submitting it until tomorrow
though.

-- 
Jens Axboe