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To: Robert Walsh <rjwalsh@pathscale.com>
Cc: "Bryan O'Sullivan" <bos@pathscale.com>, openib-general@openfabrics.org,
       linux-kernel@vger.kernel.org
Subject: Re: [ofa-general] Re: [PATCH 00 of 33] Set of ipath patches for 2.6.22
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	<aday7kzooa7.fsf@cisco.com> <461D600E.4070709@pathscale.com>
From: Roland Dreier <rdreier@cisco.com>
Date: Wed, 11 Apr 2007 15:33:30 -0700
In-Reply-To: <461D600E.4070709@pathscale.com> (Robert Walsh's message of "Wed, 11 Apr 2007 15:24:14 -0700")
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 > BTW: any idea how this ever got triggered?  The only way I can see is
 > if you're either not using libipathverbs and libibverbs and you just
 > create the CQ some other way, which seems unlikely.  Do you know how
 > Jason triggered this bug?

Yes, it was because he was using 32-bit userspace and so it was
impossible to libipathverbs to mmap the address the kernel driver was
looking for.  So the mmap failed and the pending mmap never got taken
off the list.

 - R.