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Re: Bug#625828: libipc-sharelite-perl: FTBFS on armel: test failures

On Sat, May 14, 2011, Niko Tyni wrote:
> > I can reproduce this on abel.debian.org with both squeeze (Perl 5.10)
> > and sid (5.12), but not on agricola.debian.org at all. Either kernel or
> > hardware specific? I see from the build log that arnold.debian.org (the
> > buildd) is running "Linux 2.6.32 armel (armv5tel)" which matches abel.
> It also failed on ancina.d.o ("Linux 2.6.31-rc9 armel (armv5tel)")
> and alwyn.d.o ("Linux 2.6.32 armel (armv5tel)"). Dominic uploaded a
> binary package built on agricola.d.o (2.6.26-2-iop32x), where it
> never fails.
> The code uses semaphore operations for locking shared memory, and the
> bug seems to be that attaching the same shared memory segment twice and
> then accessing the second copy breaks locking altogether.

 There were testsuite failures sounding similar to this one in Ubuntu
 with older kernels; upgrading them solved the problem:

 I guess either this issue is back or the specific kernel change which
 fixed this issue should be bisected

Loïc Minier

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