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Date: Thu, 12 Oct 2006 07:52:35 +0000 From: andrew@...rond.org To: linux-kernel@...r.kernel.org Subject: Re: 2.6.18 intermittent parallel build failure On Wed, Oct 11, 2006 at 11:25:58AM +0000, andrew@...rond.org wrote: > When compiling the kernel on a Sun T1000 ( Niagra - 6 cores/24 > threads) with > > make -j12 > > I occasionally see failures like: > This was due a serious bug in gnu make; see https://savannah.gnu.org/bugs/?14853 This effects most of the recent make releases, and is _not_ sun/sparc/solaris specific, so don't stop reading the bug report at the first line ;) I've posted a patch against make-3.81 which fixes it for me. Symptoms: Random crashing of make worker sub-processes at high -j#. More pronounced when threads are waiting on i/o (make enables SIGCHLD interrupts for short periods which can interrupt read(2) in the worker threads and EINTR isn't handled) This will likely effect anyone using large -j# on larger multi-core/multi-processor machines, so BEWARE! Andrew Walrond - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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