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Commit 7937a56f authored by Amir Goldstein's avatar Amir Goldstein Committed by Miklos Szeredi
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ovl: handle ENOENT on index lookup 



Treat ENOENT from index entry lookup the same way as treating a returned
negative dentry. Apparently, either could be returned if file is not
found, depending on the underlying file system.

Fixes: 359f392c ("ovl: lookup index entry for copy up origin")
Cc: <stable@vger.kernel.org> # v4.13
Signed-off-by: default avatarAmir Goldstein <amir73il@gmail.com>
parent 6eaf0111

fs/overlayfs/namei.c

+4 −0
Original line number Diff line number Diff line
@@ -507,6 +507,10 @@ static struct dentry *ovl_lookup_index(struct dentry *dentry, 
	index = lookup_one_len_unlocked(name.name, ofs->indexdir, name.len);

	if (IS_ERR(index)) {

		err = PTR_ERR(index);

		if (err == -ENOENT) {

			index = NULL;

			goto out;

		}

		pr_warn_ratelimited("overlayfs: failed inode index lookup (ino=%lu, key=%*s, err=%i);\n"

				    "overlayfs: mount with '-o index=off' to disable inodes index.\n",

				    d_inode(origin)->i_ino, name.len, name.name,