From patchwork Sat Feb 8 10:40:10 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Kleine-Budde X-Patchwork-Id: 13966366 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0B4AAC02198 for ; Sat, 8 Feb 2025 10:44:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:Message-Id:MIME-Version:Subject: Date:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=Ko0SMEbRJMNPy11l8J4QKn5+7NJa0vQJ5DnAIWzsl/I=; b=LqW1HMCLPavXi+ 5uxEpqF1dS6OQt+lmW/u0KF+lVgY8jFZCuk2Sc41WCC/06GbkmAWSkX36tLHe61m/SvTtv5SI0+FB RWY1K0Mb9RlzGy2RPOTScRV7j+korwyYz6AUM0xWO/GEV8Ji9sWxU5EoxdsaqEUz8Q7/fzaBSEQo8 AnVCuzDd3URb3a9ksL2zCi3oDCAyogfk7WAylmtD4ZIguBcFrsBjV82frGLLnA8uJRtWDD/3aQL2c TpymZMPOZONzTbxY1OzMVf4g7vaZba2QU49HwkZWexz9c7xBCw3cdol7hg2lbQbOFGvr3uL7EV+ed KI0QbFYq9Twn7midTD+Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tgiK5-0000000CmAR-0aNc; Sat, 08 Feb 2025 10:44:29 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tgiG6-0000000ClgS-1Utp for linux-rockchip@lists.infradead.org; Sat, 08 Feb 2025 10:40:23 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1tgiG3-0001Sl-CI for linux-rockchip@lists.infradead.org; Sat, 08 Feb 2025 11:40:19 +0100 Received: from moin.white.stw.pengutronix.de ([2a0a:edc0:0:b01:1d::7b] helo=bjornoya.blackshift.org) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1tgiG3-0047tG-0Y for linux-rockchip@lists.infradead.org; Sat, 08 Feb 2025 11:40:19 +0100 Received: from dspam.blackshift.org (localhost [127.0.0.1]) by bjornoya.blackshift.org (Postfix) with SMTP id BFB343BCC7B for ; Sat, 08 Feb 2025 10:40:18 +0000 (UTC) Received: from hardanger.blackshift.org (unknown [172.20.34.65]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by bjornoya.blackshift.org (Postfix) with ESMTPS id 0D0D73BCC79; Sat, 08 Feb 2025 10:40:15 +0000 (UTC) Received: from [172.20.34.65] (localhost [::1]) by hardanger.blackshift.org (OpenSMTPD) with ESMTP id d4e51cb2; Sat, 8 Feb 2025 10:40:13 +0000 (UTC) From: Marc Kleine-Budde Date: Sat, 08 Feb 2025 11:40:10 +0100 Subject: [PATCH] can: rockchip: rkcanfd_handle_rx_fifo_overflow_int(): bail out if skb cannot be allocated MIME-Version: 1.0 Message-Id: <20250208-fix-rockchip-canfd-v1-1-ec533c8a9895@pengutronix.de> X-B4-Tracking: v=1; b=H4sIAIk0p2cC/x2MUQqAIBAFrxL73YKKQXWV6CPWZy2BhUIE0d2TP gdm5qGCrCg0Ng9lXFr0SBVs25BsS1rBGiqTM64zzvQc9eZ8yC6bnixLioEFZoCFd15ANTwzqvV Pp/l9P3aUMVNkAAAA X-Change-ID: 20250208-fix-rockchip-canfd-ce09e1e424ce To: kernel@pengutronix.de, Vincent Mailhol , Heiko Stuebner Cc: linux-can@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de, Robin van der Gracht , stable@vger.kernel.org, Marc Kleine-Budde X-Mailer: b4 0.15-dev-33ea6 X-Developer-Signature: v=1; a=openpgp-sha256; l=1171; i=mkl@pengutronix.de; h=from:subject:message-id; bh=PwbCo7t4iBsksyF7q8Utv/uAB57+6RRB9poqEpMgKGU=; b=owEBbQGS/pANAwAKAQx0Zd/5kJGcAcsmYgBnpzSLeZF041hFWwJznMla/rYHo/Kr6M9ABoeEf I30PGx2iY+JATMEAAEKAB0WIQSf+wzYr2eoX/wVbPMMdGXf+ZCRnAUCZ6c0iwAKCRAMdGXf+ZCR nK6oB/4/q1HDynZTpdxTvLZh2kNz03joEazK23rP5OaVDdzxMt39NZgK4+AzopoLbD3O8gbIXfl QCtWdlnRVwaTcCtmmJqqb0yu8BRJICWoQKbf+ehUfQaztoL4BKL6/o3BYJidhBOyyuzursTjyjk mjbs5geqx+qrD5WdFmZ+TUomvekUehuAs5CdXOesMv7B+1L1K992GB0UFt21sb7dz4KncplCeb8 MVhgA+oKUYX5VF4Cy5f5scDeCs7Mxry4VzUR78A9mhTVsATt1jIoY/JT/zivCTxDZSnlNbM3hra yYzEOI+KVXmIsvCfzVzGKSaS3TksIKFye2pf1ocqtWO7zM4I X-Developer-Key: i=mkl@pengutronix.de; a=openpgp; fpr=C1400BA0B3989E6FBC7D5B5C2B5EE211C58AEA54 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: mkl@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-rockchip@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250208_024022_407455_3630C125 X-CRM114-Status: GOOD ( 10.73 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org From: Robin van der Gracht Fix NULL pointer check in rkcanfd_handle_rx_fifo_overflow_int() to bail out if skb cannot be allocated. Fixes: ff60bfbaf67f ("can: rockchip_canfd: add driver for Rockchip CAN-FD controller") Cc: stable@vger.kernel.org Signed-off-by: Robin van der Gracht Signed-off-by: Marc Kleine-Budde --- drivers/net/can/rockchip/rockchip_canfd-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- base-commit: 1438f5d07b9a7afb15e1d0e26df04a6fd4e56a3c change-id: 20250208-fix-rockchip-canfd-ce09e1e424ce Best regards, diff --git a/drivers/net/can/rockchip/rockchip_canfd-core.c b/drivers/net/can/rockchip/rockchip_canfd-core.c index df18c85fc078..d9a937ba126c 100644 --- a/drivers/net/can/rockchip/rockchip_canfd-core.c +++ b/drivers/net/can/rockchip/rockchip_canfd-core.c @@ -622,7 +622,7 @@ rkcanfd_handle_rx_fifo_overflow_int(struct rkcanfd_priv *priv) netdev_dbg(priv->ndev, "RX-FIFO overflow\n"); skb = rkcanfd_alloc_can_err_skb(priv, &cf, ×tamp); - if (skb) + if (!skb) return 0; rkcanfd_get_berr_counter_corrected(priv, &bec);