From: Miklos Szeredi <miklos@xxxxxxxxxx>
This patch has been added to the 3.18 stable tree. If you have any
objections, please let us know.
===============
[ Upstream commit 97daf8b97ad6f913a34c82515be64dc9ac08d63e ]
When ovl_copy_xattr() encountered a zero size xattr no more xattrs were
copied and the function returned success. This is clearly not the desired
behavior.
Signed-off-by: Miklos Szeredi <miklos@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
---
fs/overlayfs/copy_up.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/overlayfs/copy_up.c b/fs/overlayfs/copy_up.c
index ea10a87..21b5d40 100644
--- a/fs/overlayfs/copy_up.c
+++ b/fs/overlayfs/copy_up.c
@@ -54,7 +54,7 @@ int ovl_copy_xattr(struct dentry *old, struct dentry *new)
for (name = buf; name < (buf + list_size); name += strlen(name) + 1) {
size = vfs_getxattr(old, name, value, XATTR_SIZE_MAX);
- if (size <= 0) {
+ if (size < 0) {
error = size;
goto out_free_value;
}
--
2.5.0
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