From: Sage Weil <sage@newdream.net>
Date: Mon, 20 Oct 2008 20:56:43 +0000 (-0700)
Subject: kclient: fix possible null pointer deref
X-Git-Tag: v0.5~250
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=1fa1feecc11dab7c8d08c04384a89162e2f5d699;p=ceph.git

kclient: fix possible null pointer deref
---

diff --git a/src/kernel/mds_client.c b/src/kernel/mds_client.c
index 4d994ebf9fa2..5e3efe934179 100644
--- a/src/kernel/mds_client.c
+++ b/src/kernel/mds_client.c
@@ -2110,7 +2110,8 @@ void ceph_mdsc_stop(struct ceph_mds_client *mdsc)
 {
 	dout(10, "stop\n");
 	cancel_delayed_work_sync(&mdsc->delayed_work); /* cancel timer */
-	ceph_mdsmap_destroy(mdsc->mdsmap);
+	if (mdsc->mdsmap)
+		ceph_mdsmap_destroy(mdsc->mdsmap);
 	kfree(mdsc->sessions);
 }