From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2B939C43217 for ; Sun, 9 Oct 2022 22:31:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232469AbiJIWa6 (ORCPT ); Sun, 9 Oct 2022 18:30:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42384 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232507AbiJIW3p (ORCPT ); Sun, 9 Oct 2022 18:29:45 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A4DDB3718B; Sun, 9 Oct 2022 15:19:28 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 7AB7BB80DDC; Sun, 9 Oct 2022 22:19:25 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EEB65C433C1; Sun, 9 Oct 2022 22:19:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1665353964; bh=KpUOntgOBSl9iQrjVWZMtJsc9co7McfrbWqSjTYI6Fs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nstYlZtSBsmXOB+v4ssH9lGUOvQE/peq8oAEuLwUQgIhqygNh/3WSIPjLJ1O0PTOK oPRLhnjcpxVDcaJj/mZAUILlhk0KQ3La74oEIP2ri9/DC94K0fs+t2jzA3L7Ch2iBP TePWCUrr7EXJBhiM4KgsvJm3427axSuIB+TcbqcIjdn683k2qxRCWMlmOuzTLk4H8e MZxr0Er3gFsqUYxph5O1p4YY18MT6x2+iv/bsyJz1gKBHGfgkSbruQA/+n7hIdhf2Q xDxT+zcbTRv4KJIWV3TfwkuYeEOO8dGK37nH+q+EjemuwcyHUl93ZfTqY4RCgxaYSx 1MHGkrjBGjveg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Jacob Keller , Gurucharan , Tony Nguyen , Sasha Levin , jesse.brandeburg@intel.com, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 5.15 04/46] ice: set tx_tstamps when creating new Tx rings via ethtool Date: Sun, 9 Oct 2022 18:18:29 -0400 Message-Id: <20221009221912.1217372-4-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20221009221912.1217372-1-sashal@kernel.org> References: <20221009221912.1217372-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Jacob Keller [ Upstream commit b3b173745c8cab1e24d6821488b60abed3acb24d ] When the user changes the number of queues via ethtool, the driver allocates new rings. This allocation did not initialize tx_tstamps. This results in the tx_tstamps field being zero (due to kcalloc allocation), and would result in a NULL pointer dereference when attempting a transmit timestamp on the new ring. Signed-off-by: Jacob Keller Tested-by: Gurucharan (A Contingent worker at Intel) Signed-off-by: Tony Nguyen Signed-off-by: Sasha Levin --- drivers/net/ethernet/intel/ice/ice_ethtool.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ethernet/intel/ice/ice_ethtool.c b/drivers/net/ethernet/intel/ice/ice_ethtool.c index 9b9c2b885486..f10d9c377c74 100644 --- a/drivers/net/ethernet/intel/ice/ice_ethtool.c +++ b/drivers/net/ethernet/intel/ice/ice_ethtool.c @@ -2788,6 +2788,7 @@ ice_set_ringparam(struct net_device *netdev, struct ethtool_ringparam *ring) tx_rings[i].count = new_tx_cnt; tx_rings[i].desc = NULL; tx_rings[i].tx_buf = NULL; + tx_rings[i].tx_tstamps = &pf->ptp.port.tx; err = ice_setup_tx_ring(&tx_rings[i]); if (err) { while (i--) -- 2.35.1