From: Chuck Lever <chuck.lever@oracle.com>
Date: Tue, 29 Jul 2014 21:23:17 +0000 (-0400)
Subject: xprtrdma: Fix panic in rpcrdma_register_frmr_external()
X-Git-Tag: cleanup-for-v3.18~41^2~24^2~20
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5fc83f470d8ada25927701512cf94a53dab6c4c8;p=pandora-kernel.git

xprtrdma: Fix panic in rpcrdma_register_frmr_external()

seg1->mr_nsegs is not yet initialized when it is used to unmap
segments during an error exit. Use the same unmapping logic for
all error exits.

"if (frmr_wr.wr.fast_reg.length < len) {" used to be a BUG_ON check.
The broken code will never be executed under normal operation.

Fixes: c977dea (xprtrdma: Remove BUG_ON() call sites)
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: Steve Wise <swise@opengridcomputing.com>
Tested-by: Shirley Ma <shirley.ma@oracle.com>
Tested-by: Devesh Sharma <devesh.sharma@emulex.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
---

Reading git-diff-tree failed