netfilter: xt_qtaguid: change WARN_ONCE into pr_warn_once

Make the warning less scary.

Change-Id: I0276c5413e37ec991f24db57aeb90333fb1b5a65
Signed-off-by: JP Abgrall <jpa@google.com>

diff --git a/net/netfilter/xt_qtaguid.c b/net/netfilter/xt_qtaguid.c
index 9b9b809b9960ab1c0572867e7f959ce8b8290209..c42e486c5cbe06be88c6713a9ff998e544eced00 100644 (file)
--- a/net/netfilter/xt_qtaguid.c
+++ b/net/netfilter/xt_qtaguid.c
@@ -2113,14 +2113,16 @@ static int ctrl_cmd_tag(const char *input)
                 * At first, we want to catch user-space code that is not
                 * opening the /dev/xt_qtaguid.
                 */
-               WARN_ONCE(IS_ERR_OR_NULL(pqd_entry),
-                         "qtaguid: User space forgot to open /dev/xt_qtaguid? "
-                         "pid=%u tgid=%u uid=%u\n",
-                         current->pid, current->tgid, current_fsuid());
-               if (!IS_ERR_OR_NULL(pqd_entry)) {
+               if (IS_ERR_OR_NULL(pqd_entry))
+                       pr_warn_once(
+                               "qtaguid: %s(): "
+                               "User space forgot to open /dev/xt_qtaguid? "
+                               "pid=%u tgid=%u uid=%u\n", __func__,
+                               current->pid, current->tgid,
+                               current_fsuid());
+               else
                        list_add(&sock_tag_entry->list,
                                 &pqd_entry->sock_tag_list);
-               }
                spin_unlock_bh(&uid_tag_data_tree_lock);
 
                sock_tag_tree_insert(sock_tag_entry, &sock_tag_tree);
@@ -2200,11 +2202,12 @@ static int ctrl_cmd_untag(const char *input)
         * At first, we want to catch user-space code that is not
         * opening the /dev/xt_qtaguid.
         */
-       WARN_ONCE(IS_ERR_OR_NULL(pqd_entry),
-                 "qtaguid: User space forgot to open /dev/xt_qtaguid? "
-                 "pid=%u tgid=%u uid=%u\n",
-                 current->pid, current->tgid, current_fsuid());
-       if (!IS_ERR_OR_NULL(pqd_entry))
+       if (IS_ERR_OR_NULL(pqd_entry))
+               pr_warn_once("qtaguid: %s(): "
+                            "User space forgot to open /dev/xt_qtaguid? "
+                            "pid=%u tgid=%u uid=%u\n", __func__,
+                            current->pid, current->tgid, current_fsuid());
+       else
                list_del(&sock_tag_entry->list);
        spin_unlock_bh(&uid_tag_data_tree_lock);
        /*