From: Michael S. Tsirkin <mst@dev.mellanox.co.il>
Date: Mon, 14 May 2007 14:14:50 +0000 (+0300)
Subject: IB/mthca: Set cleaned CQEs back to HW ownership when cleaning CQ
X-Git-Tag: v2.6.22-rc2~93^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bd18c112774db5bb887adb981ffbe9bfe00b2f3a;p=pandora-kernel.git

IB/mthca: Set cleaned CQEs back to HW ownership when cleaning CQ

mthca_cq_clean() updates the CQ consumer index without moving CQEs
back to HW ownership.  As a result, the same WRID might get reported
twice, resulting in a use-after-free.  This was observed in IPoIB CM.
Fix by moving all freed CQEs to HW ownership.

This fixes <https://bugs.openfabrics.org/show_bug.cgi?id=617>

Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
---

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