diff mbox

nfs4: Fix NULL dereference at d_alloc_and_lookup()

Message ID 1300830025-17152-1-git-send-email-gusev.vitaliy@nexenta.com (mailing list archive)
State Accepted, archived
Delegated to: Trond Myklebust
Headers show

Commit Message

Vitaliy Gusev March 22, 2011, 9:40 p.m. UTC 
None
diff mbox

Patch

diff --git a/fs/nfs/getroot.c b/fs/nfs/getroot.c
index 3031ef7..914eb78 100644
--- a/fs/nfs/getroot.c
+++ b/fs/nfs/getroot.c
@@ -192,6 +192,10 @@  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)) {
 		dprintk("nfs_get_root: get root inode failed\n");