tree c5e2b937d425229b1f49d92ab69d2ea2f2c0946e
parent bf858ab0adcb36fc60a1d941749a7dd0a9bf3d8a
author Chuck Lever <chuck.lever@oracle.com> 1406668997 -0400
committer Anna Schumaker <Anna.Schumaker@Netapp.com> 1406838172 -0400

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>