From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 62CD928E00 for ; Wed, 20 Sep 2023 11:54:10 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8D2E3C433C9; Wed, 20 Sep 2023 11:54:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1695210849; bh=Crd/yO4pvY57kYT6TCwojIGXsUtmVlvGg6Yq/1aY7EQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HCYhY3MvyfBh64hAQ8VIU65kUUqQSuk3fm7Oc0E6iKt4GNnyOhmdflRtXeqmlgr5N VPNaFXNjv/Iy1GT8eFAoKCtr16Haz3vdVEvXAXa3r3t9F/jFnwUUZ0A/zeZceyt12o RdUZ8mp+M7x8LgpnOz1V9rnC1QJtveoIKWEYqLTk= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Paul Menzel , Simon Horman , Wojciech Drewek , Sujai Buvaneswaran , Tony Nguyen , Sasha Levin Subject: [PATCH 6.1 016/139] ice: Dont tx before switchdev is fully configured Date: Wed, 20 Sep 2023 13:29:10 +0200 Message-ID: <20230920112836.211127534@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230920112835.549467415@linuxfoundation.org> References: <20230920112835.549467415@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Wojciech Drewek [ Upstream commit 7aa529a69e92b9aff585e569d5003f7c15d8d60b ] There is possibility that ice_eswitch_port_start_xmit might be called while some resources are still not allocated which might cause NULL pointer dereference. Fix this by checking if switchdev configuration was finished. Reviewed-by: Paul Menzel Reviewed-by: Simon Horman Signed-off-by: Wojciech Drewek Tested-by: Sujai Buvaneswaran Signed-off-by: Tony Nguyen Signed-off-by: Sasha Levin --- drivers/net/ethernet/intel/ice/ice_eswitch.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/intel/ice/ice_eswitch.c b/drivers/net/ethernet/intel/ice/ice_eswitch.c index 2ffe5708a045b..7de4a8a4b563c 100644 --- a/drivers/net/ethernet/intel/ice/ice_eswitch.c +++ b/drivers/net/ethernet/intel/ice/ice_eswitch.c @@ -361,6 +361,9 @@ ice_eswitch_port_start_xmit(struct sk_buff *skb, struct net_device *netdev) np = netdev_priv(netdev); vsi = np->vsi; + if (!vsi || !ice_is_switchdev_running(vsi->back)) + return NETDEV_TX_BUSY; + if (ice_is_reset_in_progress(vsi->back->state) || test_bit(ICE_VF_DIS, vsi->back->state)) return NETDEV_TX_BUSY; -- 2.40.1