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Re: test-fdutimensat racy?

From: Jim Meyering
Subject: Re: test-fdutimensat racy?
Date: Wed, 01 May 2013 00:14:27 +0200

Bernhard Voelker wrote:
> I'm having problems with the above test on different systems
> for a while now.  It aborts at different places.
> Therefore, I've run it 1000 times like the following
>   for f in $( seq 1000 ) ; do \
>     ./test-fdutimensat ; \
>   done 2>&1 | grep -v Aborted
> On a system I usually don't see problems with it (openSUSE-12.1, ext4),
> I see 2-8 failures like this:
>   test-futimens.h:57: assertion failed
>   test-lutimens.h:64: assertion failed
>   test-lutimens.h:162: assertion failed
>   test-utimens.h:130: assertion failed
>   test-utimens.h:103: assertion failed
>   test-utimens.h:130: assertion failed
>   test-utimens.h:119: assertion failed
> On openSUSE-12.2 with ext4, a VM in VirtualBox, I'm even getting
> ~380 failures.
> Furthermore, I saw the same aborts on openSUSE Build Service when
> running 'make check' for the coreutils package, and on SLES-10.3 (ext3).
> Any ideas?

Yes, I've seen those repeatedly, over the years, especially in VMs,
and more likely when run in parallel with other tests.  Here's
one thread about it:


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