nfsd: Fix inconsistent assignment
Dereferenced pointer "dentry" without checking and assigned to inode
in the declaration.
(We could just delete the NULL checks that follow instead, as we never
get to the encode function in this particular case. But it takes a
little detective work to verify that fact, so it's probably safer to
leave the checks in place.)
Cc: Steve French <smfltc@us.ibm.com>
Signed-off-by: Prasad V Potluri <pvp@us.ibm.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
diff --git a/fs/nfsd/nfs2acl.c b/fs/nfsd/nfs2acl.c
index 0e5fa11..1c3b765 100644
--- a/fs/nfsd/nfs2acl.c
+++ b/fs/nfsd/nfs2acl.c
@@ -221,12 +221,17 @@
struct nfsd3_getaclres *resp)
{
struct dentry *dentry = resp->fh.fh_dentry;
- struct inode *inode = dentry->d_inode;
+ struct inode *inode;
struct kvec *head = rqstp->rq_res.head;
unsigned int base;
int n;
int w;
+ /*
+ * Since this is version 2, the check for nfserr in
+ * nfsd_dispatch actually ensures the following cannot happen.
+ * However, it seems fragile to depend on that.
+ */
if (dentry == NULL || dentry->d_inode == NULL)
return 0;
inode = dentry->d_inode;