Commit 7168179f authored Jan 30, 2018 by Amir Goldstein Committed by Miklos Szeredi Feb 16, 2018

ovl: check ERR_PTR() return value from ovl_lookup_real()



Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: 06170154 ("ovl: lookup indexed ancestor of lower dir")
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

parent 2ca3c148

fs/overlayfs/export.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -477,8 +477,8 @@ static struct dentry ovl_lookup_real_inode(struct super_block sb,
		dput(upper);
		}

		if (!this)
		return NULL;
		if (IS_ERR_OR_NULL(this))
		return this;

		if (WARN_ON(ovl_dentry_real_at(this, layer->idx) != real)) {
		dput(this);