From b000056a5a8d3f5a4a9fb80184a7ec14f86a43d4 Mon Sep 17 00:00:00 2001
From: David Zafman <david.zafman@inktank.com>
Date: Thu, 25 Oct 2012 10:23:46 -0700
Subject: [PATCH] ceph: Fix NULL ptr crash in strlen()
set_request_path_attr() checks for NULL ptr before calling strlen()
This fixes http://tracker.newdream.net/issues/3404
Signed-off-by: David Zafman <david.zafman@inktank.com>
Reviewed-by: Sage Weil <sage@inktank.com>
---
fs/ceph/mds_client.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index 1bcf712655d9..62d2342eb267 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -1590,7 +1590,7 @@ static int set_request_path_attr(struct inode *rinode, struct dentry *rdentry,
} else if (rpath || rino) {
*ino = rino;
*ppath = rpath;
- *pathlen = strlen(rpath);
+ *pathlen = rpath ? strlen(rpath) : 0;
dout(" path %.*s\n", *pathlen, rpath);
}
--
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