selinux: convert WARN_ONCE() to printk() in selinux_nlmsg_perm()

commit d950f84c1c6658faec2ecbf5b09f7e7191953394 upstream.

Convert WARN_ONCE() to printk() in selinux_nlmsg_perm().

After conversion from audit_log() in commit e173fb26, WARN_ONCE() was
deemed too alarmist, so switch it to printk().

Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
[PM: Changed to printk(WARNING) so we catch all of the different
 invalid netlink messages.  In Richard's defense, he brought this
 point up earlier, but I didn't understand his point at the time.]
Signed-off-by: Paul Moore <pmoore@redhat.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 7d7631ef938ef4460f9e4949b431f5456d833c32..ba090b1ae8eb9f5ff5fa277718f3e738f8b57e92 100644 (file)
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -4683,9 +4683,10 @@ static int selinux_nlmsg_perm(struct sock *sk, struct sk_buff *skb)
        err = selinux_nlmsg_lookup(sksec->sclass, nlh->nlmsg_type, &perm);
        if (err) {
                if (err == -EINVAL) {
-                       WARN_ONCE(1, "selinux_nlmsg_perm: unrecognized netlink message:"
-                                 " protocol=%hu nlmsg_type=%hu sclass=%hu\n",
-                                 sk->sk_protocol, nlh->nlmsg_type, sksec->sclass);
+                       printk(KERN_WARNING
+                              "SELinux: unrecognized netlink message:"
+                              " protocol=%hu nlmsg_type=%hu sclass=%hu\n",
+                              sk->sk_protocol, nlh->nlmsg_type, sksec->sclass);
                        if (!selinux_enforcing || security_get_allow_unknown())
                                err = 0;
                }