ns: return EFAULT on put_user() error

Don't return EINVAL, return EFAULT just like we do in other system
calls.

Link: https://patch.msgid.link/20251109-namespace-6-19-fixes-v1-4-ae8a4ad5a3b3@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>

diff --git a/kernel/nstree.c b/kernel/nstree.c
index 55b72d4..f27f772 100644 (file)
--- a/kernel/nstree.c
+++ b/kernel/nstree.c
@@ -584,7 +584,7 @@ static ssize_t do_listns_userns(struct klistns *kls)
 
                if (put_user(valid->ns_id, ns_ids + ret)) {
                        ns_put(prev);
-                       return -EINVAL;
+                       return -EFAULT;
                }
 
                nr_ns_ids--;
@@ -726,7 +726,7 @@ static ssize_t do_listns(struct klistns *kls)
 
                if (put_user(valid->ns_id, ns_ids + ret)) {
                        ns_put(prev);
-                       return -EINVAL;
+                       return -EFAULT;
                }
 
                nr_ns_ids--;