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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F09A8C432C0 for ; Wed, 27 Nov 2019 20:57:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C82EB2158C for ; Wed, 27 Nov 2019 20:57:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574888249; bh=AFXHZLOietu/5Qoi+Zd8KLI2EG/uE9+32R3/Z1FPs5M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=rsV7plj4CliUpsum09ybdbW1M5UgQcRs4U56o0sizXdeZ9jVhfJSkWFLcKeKiSLKL PH76X6kARFN5C6nDuIY6M3vo4UJONPmZ1GzK3ABQImoCDe2yNZNPj+JarqGQRxE2MJ QGEsyYgvFqp/rw/ypWzhYl+b9AXqNzc8Rew2BpcI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731199AbfK0U52 (ORCPT ); Wed, 27 Nov 2019 15:57:28 -0500 Received: from mail.kernel.org ([198.145.29.99]:48408 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731180AbfK0U5X (ORCPT ); Wed, 27 Nov 2019 15:57:23 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 824C92084D; Wed, 27 Nov 2019 20:57:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574888243; bh=AFXHZLOietu/5Qoi+Zd8KLI2EG/uE9+32R3/Z1FPs5M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CDEs2lkV9vkj5c89ZybgG8xseDMuBvCNTMLZLGC2EsrijOoa2ZuNVveAHMfS6M7zV NcyxGRPkVDrqn1EIxodFG4Lsti92xpONzjsKHqDJUoTKFimq7x/+MNdEiRrOv6MZkS 4XDvjqekYWJVpZITWD2JZRGxrIof1Myp2nuhhiyg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Christophe JAILLET , Maxime Ripard , Linus Walleij , Sasha Levin Subject: [PATCH 4.19 060/306] pinctrl: sunxi: Fix a memory leak in sunxi_pinctrl_build_state() Date: Wed, 27 Nov 2019 21:28:30 +0100 Message-Id: <20191127203119.143994143@linuxfoundation.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191127203114.766709977@linuxfoundation.org> References: <20191127203114.766709977@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Christophe JAILLET [ Upstream commit a93a676b079144009f55fff2ab0e34c3b7258c8a ] If 'krealloc()' fails, 'pctl->functions' is set to NULL. We should instead use a temp variable in order to be able to free the previously allocated memeory, in case of OOM. Signed-off-by: Christophe JAILLET Acked-by: Maxime Ripard Signed-off-by: Linus Walleij Signed-off-by: Sasha Levin --- drivers/pinctrl/sunxi/pinctrl-sunxi.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/drivers/pinctrl/sunxi/pinctrl-sunxi.c b/drivers/pinctrl/sunxi/pinctrl-sunxi.c index 26ebedc1f6d31..61aaaf58c5993 100644 --- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c +++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c @@ -1042,6 +1042,7 @@ static int sunxi_pinctrl_add_function(struct sunxi_pinctrl *pctl, static int sunxi_pinctrl_build_state(struct platform_device *pdev) { struct sunxi_pinctrl *pctl = platform_get_drvdata(pdev); + void *ptr; int i; /* @@ -1108,13 +1109,15 @@ static int sunxi_pinctrl_build_state(struct platform_device *pdev) } /* And now allocated and fill the array for real */ - pctl->functions = krealloc(pctl->functions, - pctl->nfunctions * sizeof(*pctl->functions), - GFP_KERNEL); - if (!pctl->functions) { + ptr = krealloc(pctl->functions, + pctl->nfunctions * sizeof(*pctl->functions), + GFP_KERNEL); + if (!ptr) { kfree(pctl->functions); + pctl->functions = NULL; return -ENOMEM; } + pctl->functions = ptr; for (i = 0; i < pctl->desc->npins; i++) { const struct sunxi_desc_pin *pin = pctl->desc->pins + i; -- 2.20.1