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Date:      Thu, 28 Jan 2016 10:18:01 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-virtualization@FreeBSD.org
Subject:   [Bug 206699] [Hyper-V]FreeBSD potential NULL pointer dereference in storage bounce buffer
Message-ID:  <bug-206699-27103-FFBmMqgcin@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-206699-27103@https.bugs.freebsd.org/bugzilla/>
References:  <bug-206699-27103@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D206699

--- Comment #1 from Roger Pau Monn=C3=83=C2=A9 <royger@freebsd.org> ---
I've already told Wei that creating your own bounce buffer is a bad idea.
Instead you should use the BUSDMA API and let it take care of the bouncing =
when
necessary:

https://reviews.freebsd.org/D1964

IIRC something was missing in BUSDMA so that the HyperV storage driver could
use it, we should look into adding what's needed and then removing this cus=
tom
bounce buffering.

Please upload the patch to the review system.

Roger.

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