From: John L. Hammond <john.hammond@intel.com>
Date: Sun, 29 Jan 2017 00:05:15 +0000 (-0500)
Subject: staging: lustre: mdc: avoid returning freed request
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=59bedbccb5d27356a808f9451a3fb25adb093cc9;p=linux.git

staging: lustre: mdc: avoid returning freed request

In mdc_close() if ptlrpc_request_pack() fails then set req to NULL so
that an already freed request is not returned in *request.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-8811
Reviewed-on: https://review.whamcloud.com/23843
Reviewed-by: Patrick Farrell <paf@cray.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/lustre/lustre/mdc/mdc_request.c b/drivers/staging/lustre/lustre/mdc/mdc_request.c
index b41f1ddf72cd4..6bc2fb8586802 100644
--- a/drivers/staging/lustre/lustre/mdc/mdc_request.c
+++ b/drivers/staging/lustre/lustre/mdc/mdc_request.c
@@ -762,6 +762,7 @@ static int mdc_close(struct obd_export *exp, struct md_op_data *op_data,
 	rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_CLOSE);
 	if (rc) {
 		ptlrpc_request_free(req);
+		req = NULL;
 		goto out;
 	}