Re: [ofa-general] Re: [PATCH 00 of 33] Set of ipath patches for 2.6.22

From: Robert Walsh
Date: Wed Apr 11 2007 - 18:47:35 EST


Roland Dreier wrote:
> 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.

Oh, OK. Got it. That problem is on my list, too, along with the other pending_mmap-related cleanups you suggested. Hopefully I'll have a patch finished tonight.
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