linux-ext4 - Re: xfstests failure generic/299

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Date:	Mon, 15 Apr 2013 13:15:38 +0400
From:	Dmitry Monakhov <dmonakhov@...nvz.org>
To:	Theodore Ts'o <tytso@....edu>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: xfstests failure generic/299

On Sun, 14 Apr 2013 18:47:12 -0400, "Theodore Ts'o" <tytso@....edu> wrote:
> On Sat, Apr 13, 2013 at 01:09:27PM +0400, Dmitry Monakhov wrote:
> > >      Run fio with random aio-dio pattern
> > >      
> > >      Start fallocate/truncate loop
> > >     +./common/rc: line 2055:  3353 Segmentation fault      "$@" >>
> > Yes, this is known issue. I probably use recent fio.git/HEAD
> > Jens does a good job on developing fio, but he tend to commit random
> > untested crap to his git. So stability is worse than it should be.
> > I have golden-good commit (aeb32dfccbd05) which works for me, and suggest
> > to use it.
> 
> Hmm... I just tried recompiling fio to git commit version
> aeb32dfccbd05, and it's blowing up with a seg fault as well.
> 
> One thing about my test environment is that I'm building xfstests and
> fio on a 32-bit x86 environemnt (because that way I can use an 32-bit
> kernel, and because when I use a 64-bit kernel I stress test the
> 64-bit compatibility code paths).  Perhaps this has something to do
> with it?
Yep, reproducible with -m32 compile option
> 
> Unfortunately, I don't have the time to debug this, so at least for
> now I'm going to exclude generic/299 from my automated test runs.
Actually fix is quite simple, after this everything works fine.

View attachment "0001-fio-fix-segfault-on-32bits-platforms.patch" of type "text/x-patch" (780 bytes)


> 
>     	      	 	 	     	  - Ted