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authorDan Carpenter <dan.carpenter@oracle.com>2012-03-13 18:18:48 +0100
committerTrond Myklebust <Trond.Myklebust@netapp.com>2012-03-13 20:33:08 +0100
commite138ead73f872559778bb0c326e795206f96d3ce (patch)
treee134947deaeae4e347297440a6fd6ebe7fefcc97 /fs/nfs
parentNFSv4: Rate limit the state manager warning messages (diff)
downloadlinux-e138ead73f872559778bb0c326e795206f96d3ce.tar.xz
linux-e138ead73f872559778bb0c326e795206f96d3ce.zip
NFS: null dereference in dev_remove()
In commit 5ffaf85541 "NFS: replace global bl_wq with per-net one" we made "msg" a pointer instead of a struct stored in stack memory. But we forgot to change the memset() here so we're still clearing stack memory instead clearing the struct like we intended. It will lead to a kernel crash. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/blocklayout/blocklayoutdm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/nfs/blocklayout/blocklayoutdm.c b/fs/nfs/blocklayout/blocklayoutdm.c
index 30fc22af7bbb..737d839bc17b 100644
--- a/fs/nfs/blocklayout/blocklayoutdm.c
+++ b/fs/nfs/blocklayout/blocklayoutdm.c
@@ -54,7 +54,7 @@ static void dev_remove(struct net *net, dev_t dev)
dprintk("Entering %s\n", __func__);
bl_pipe_msg.bl_wq = &nn->bl_wq;
- memset(&msg, 0, sizeof(*msg));
+ memset(msg, 0, sizeof(*msg));
msg->data = kzalloc(1 + sizeof(bl_umount_request), GFP_NOFS);
if (!msg->data)
goto out;