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From:   Aaron Conole <aconole@redhat.com>
To:     netdev@vger.kernel.org
Cc:     Pravin B Shelar <pshelar@ovn.org>,
        Jakub Kicinski <kuba@kernel.org>,
        "David S. Miller" <davem@davemloft.net>,
        Paolo Abeni <pabeni@redhat.com>,
        Eric Dumazet <edumazet@google.com>,
        Thomas Graf <tgraf@suug.ch>,
        Kevin Sprague <ksprague0711@gmail.com>, dev@openvswitch.org,
        Eelco Chaudron <echaudro@redhat.com>,
        Ilya Maximets <i.maximets@ovn.org>,
        Shuah Khan <shuah@kernel.org>, linux-kernel@vger.kernel.org,
        linux-kselftest@vger.kernel.org
Subject: [PATCH net 1/2] openvswitch: switch from WARN to pr_warn
Date:   Wed, 19 Oct 2022 14:30:53 -0400
Message-Id: <20221019183054.105815-2-aconole@redhat.com>
In-Reply-To: <20221019183054.105815-1-aconole@redhat.com>
References: <20221019183054.105815-1-aconole@redhat.com>
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As noted by Paolo Abeni, pr_warn doesn't generate any splat and can still
preserve the warning to the user that feature downgrade occurred.  We
likely cannot introduce other kinds of checks / enforcement here because
syzbot can generate different genl versions to the datapath.

Reported-by: syzbot+31cde0bef4bbf8ba2d86@syzkaller.appspotmail.com
Fixes: 44da5ae5fbea ("openvswitch: Drop user features if old user space attempted to create datapath")
Cc: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Aaron Conole <aconole@redhat.com>
---
 net/openvswitch/datapath.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
index c8a9075ddd0a..155263e73512 100644
--- a/net/openvswitch/datapath.c
+++ b/net/openvswitch/datapath.c
@@ -1616,7 +1616,8 @@ static void ovs_dp_reset_user_features(struct sk_buff *skb,
 	if (IS_ERR(dp))
 		return;
 
-	WARN(dp->user_features, "Dropping previously announced user features\n");
+	pr_warn("%s: Dropping previously announced user features\n",
+		ovs_dp_name(dp));
 	dp->user_features = 0;
 }
 
-- 
2.34.3