[2/2] nfsv4: Fix dereference i_op->lookup and call NULL pointer at d_alloc_and_lookup()

Commit Message

Vitaliy Gusev Feb. 10, 2011, 12:21 p.m. UTC

None

Patch

diff --git a/fs/nfs/getroot.c b/fs/nfs/getroot.c
index b5ffe8f..7979652 100644
--- a/fs/nfs/getroot.c
+++ b/fs/nfs/getroot.c
@@ -199,6 +199,10 @@  struct dentry *nfs4_get_root(struct super_block
*sb, struct nfs_fh *mntfh)
 		goto out;
 	}
 
+	if (fattr->valid & NFS_ATTR_FATTR_FSID &&
+	    !nfs_fsid_equal(&server->fsid, &fattr->fsid))
+		memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid));
+
 	inode = nfs_fhget(sb, mntfh, fattr);
 	if (IS_ERR(inode)) {