diff --git a/fs/anon_inodes.c b/fs/anon_inodes.c
index 3662dd4..22cce87 100644
--- a/fs/anon_inodes.c
+++ b/fs/anon_inodes.c
@@ -92,7 +92,7 @@ int anon_inode_getfd(const char *name, const struct file_operations *fops,
 	this.name = name;
 	this.len = strlen(name);
 	this.hash = 0;
-	dentry = d_alloc(anon_inode_mnt->mnt_sb->s_root, &this);
+	dentry = d_alloc(NULL, &this);
 	if (!dentry)
 		goto err_put_unused_fd;
 
diff --git a/fs/dnotify.c b/fs/dnotify.c
index 676073b..66066a3 100644
--- a/fs/dnotify.c
+++ b/fs/dnotify.c
@@ -173,7 +173,7 @@ void dnotify_parent(struct dentry *dentry, unsigned long event)
 
 	spin_lock(&dentry->d_lock);
 	parent = dentry->d_parent;
-	if (parent->d_inode->i_dnotify_mask & event) {
+	if (parent && parent->d_inode->i_dnotify_mask & event) {
 		dget(parent);
 		spin_unlock(&dentry->d_lock);
 		__inode_dir_notify(parent->d_inode, event);
diff --git a/fs/inotify.c b/fs/inotify.c
index 7bbed1b..9f051bb 100644
--- a/fs/inotify.c
+++ b/fs/inotify.c
@@ -270,7 +270,7 @@ void inotify_d_instantiate(struct dentry *entry, struct inode *inode)
 
 	spin_lock(&entry->d_lock);
 	parent = entry->d_parent;
-	if (parent->d_inode && inotify_inode_watched(parent->d_inode))
+	if (parent && parent->d_inode && inotify_inode_watched(parent->d_inode))
 		entry->d_flags |= DCACHE_INOTIFY_PARENT_WATCHED;
 	spin_unlock(&entry->d_lock);
 }
diff --git a/fs/pipe.c b/fs/pipe.c
index 7aea8b8..4b961bc 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -926,7 +926,7 @@ struct file *create_write_pipe(int flags)
 		goto err;
 
 	err = -ENOMEM;
-	dentry = d_alloc(pipe_mnt->mnt_sb->s_root, &name);
+	dentry = d_alloc(NULL, &name);
 	if (!dentry)
 		goto err_inode;
 
diff --git a/net/socket.c b/net/socket.c
index e9d65ea..b84de7d 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -373,7 +373,7 @@ static int sock_attach_fd(struct socket *sock, struct file *file, int flags)
 	struct dentry *dentry;
 	struct qstr name = { .name = "" };
 
-	dentry = d_alloc(sock_mnt->mnt_sb->s_root, &name);
+	dentry = d_alloc(NULL, &name);
 	if (unlikely(!dentry))
 		return -ENOMEM;