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=-16.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 4C59DC43463 for ; Fri, 18 Sep 2020 02:50:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F16C520771 for ; Fri, 18 Sep 2020 02:50:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1600397443; bh=kXiBFLPXfbltYOYkIjUF8bZhx7YJNIxV8jyvFjFZf5k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=MYzenUxo29DNb9WvBgk/DK1LStUsxHonypUf2NJuUb5jAs47oL+wJSI3bShzUn8cb BpwCHYA3+2QFRttcn7qlKgONDBXpJepg5IAja44FRiIbco22rMSBrmiSETzjbftOfA rEVlQEpm8qXpAV6hN2vcQY9t+rAafWffReOIzf1A= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728117AbgIRCIj (ORCPT ); Thu, 17 Sep 2020 22:08:39 -0400 Received: from mail.kernel.org ([198.145.29.99]:59930 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728069AbgIRCIc (ORCPT ); Thu, 17 Sep 2020 22:08:32 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 7E568238A1; Fri, 18 Sep 2020 02:08:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1600394907; bh=kXiBFLPXfbltYOYkIjUF8bZhx7YJNIxV8jyvFjFZf5k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JVSvC46snZFNMKjdlg24oC92e8HkHMATBkAb1Qlsnd+9Re5YmvzvdH6ped6iatIxq eHluxor07XTZN8Mk1JzmYFI9IoWzlnNGyC8S+XQjTI/E8zPiqON8hSw4APh5U/jT4j Aoxqo2OTdl1ylHqxyR4Ln5al4bCbOkNkqr4C9AHg= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Hou Tao , Richard Weinberger , Vignesh Raghavendra , Sasha Levin , linux-mtd@lists.infradead.org Subject: [PATCH AUTOSEL 4.19 020/206] mtd: cfi_cmdset_0002: don't free cfi->cfiq in error path of cfi_amdstd_setup() Date: Thu, 17 Sep 2020 22:04:56 -0400 Message-Id: <20200918020802.2065198-20-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200918020802.2065198-1-sashal@kernel.org> References: <20200918020802.2065198-1-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: linux-kernel@vger.kernel.org From: Hou Tao [ Upstream commit 03976af89e3bd9489d542582a325892e6a8cacc0 ] Else there may be a double-free problem, because cfi->cfiq will be freed by mtd_do_chip_probe() if both the two invocations of check_cmd_set() return failure. Signed-off-by: Hou Tao Reviewed-by: Richard Weinberger Signed-off-by: Vignesh Raghavendra Signed-off-by: Sasha Levin --- drivers/mtd/chips/cfi_cmdset_0002.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c index 1dbc9554a0786..3ab75d3e2ce32 100644 --- a/drivers/mtd/chips/cfi_cmdset_0002.c +++ b/drivers/mtd/chips/cfi_cmdset_0002.c @@ -727,7 +727,6 @@ static struct mtd_info *cfi_amdstd_setup(struct mtd_info *mtd) kfree(mtd->eraseregions); kfree(mtd); kfree(cfi->cmdset_priv); - kfree(cfi->cfiq); return NULL; } -- 2.25.1