Commit 7168179f authored by Amir Goldstein's avatar Amir Goldstein Committed by Miklos Szeredi
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ovl: check ERR_PTR() return value from ovl_lookup_real() 



Reported-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Fixes: 06170154 ("ovl: lookup indexed ancestor of lower dir")
Signed-off-by: default avatarAmir Goldstein <amir73il@gmail.com>
Signed-off-by: default avatarMiklos 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);