From: Zdenek Kabelac <zkabelac@redhat.com>
Date: Tue, 28 Feb 2012 11:09:06 +0000 (+0000)
Subject: Check result of export_vg_to_buffer
X-Git-Tag: v2_02_96~273
X-Git-Url: https://sourceware.org/git/?a=commitdiff_plain;h=dec6a245a93f940e9cd902103537ff75a028c836;p=lvm2.git

Check result of export_vg_to_buffer

and avoid usage of failed buffer.
---

diff --git a/lib/cache/lvmetad.c b/lib/cache/lvmetad.c
index e7bd4b416..695cbed70 100644
--- a/lib/cache/lvmetad.c
+++ b/lib/cache/lvmetad.c
@@ -518,7 +518,11 @@ int lvmetad_pv_found(struct id pvid, struct device *device, const struct format_
 		 * formatted and has no conflicting keys with the rest of the
 		 * request.
 		 */
-		export_vg_to_buffer(vg, &buf);
+		if (!export_vg_to_buffer(vg, &buf)) {
+			dm_free(pvmeta);
+			return_0;
+		}
+
 		reply = daemon_send_simple(_lvmetad,
 					   "pv_found",
 					   "pvmeta = %b", pvmeta,