From: Christian Brauner <brauner@kernel.org>
Date: Sun, 9 Nov 2025 21:11:25 +0000 (+0100)
Subject: ns: return EFAULT on put_user() error
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=a51dce7c3261d26e574b35da71dac3903bb35ae2;p=thirdparty%2Flinux.git

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 55b72d4f8de4..f27f772a6762 100644
--- 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--;