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 63AD3C46467 for ; Sat, 17 Dec 2022 15:29:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229910AbiLQP3U (ORCPT ); Sat, 17 Dec 2022 10:29:20 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33656 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230022AbiLQP2e (ORCPT ); Sat, 17 Dec 2022 10:28:34 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8B916165B7; Sat, 17 Dec 2022 07:27:54 -0800 (PST) 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 40665B801C0; Sat, 17 Dec 2022 15:27:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3FBA2C433F0; Sat, 17 Dec 2022 15:27:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1671290871; bh=m+0cHHIgAywfyZAfv1jb7Y7hiDkSQYIxOyOUnSNl6HM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=A3f6R7jJR41x/EXoP/f1zp4UOV0hlKGiNV+QvGXSsCAvFBPjo9/qyuqrZKILiKZcY AXQ1od3mqWpNvhNu/KfXiFvE8PRJ6olwiAW9r33SIlp/t9B7IcL0pLyrOKSXnQXS9t lgJVHaKAMxFLcavx2qzYuFC51QbOs2H1kdKJihvh5e9qahSbbgL5J/LkW2TOZPMHP/ c47kRdm8Jo2DtkAVZPyV+W44mOUhbY414XBlT5mKmvQIXWtEso4XgPTCv15QylA8jm YE5gSVISe4BjhrG4PVNVM+dIJLtUGq5Ae25lgI8JrvhWFCfl8t6/PFPJLQY3ZvGLvp Jg+B6KoI7awmQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Jianglei Nie , Baoquan He , Benjamin Herrenschmidt , Chen Lifu , "Eric W . Biederman" , Li Chen , Michael Ellerman , Paul Mackerras , Petr Mladek , Russell King , ye xingchen , Zeal Robot , Andrew Morton , Sasha Levin , kexec@lists.infradead.org, linux-fsdevel@vger.kernel.org Subject: [PATCH AUTOSEL 6.1 13/22] proc/vmcore: fix potential memory leak in vmcore_init() Date: Sat, 17 Dec 2022 10:27:14 -0500 Message-Id: <20221217152727.98061-13-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20221217152727.98061-1-sashal@kernel.org> References: <20221217152727.98061-1-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: Jianglei Nie [ Upstream commit 12b9d301ff73122aebd78548fa4c04ca69ed78fe ] Patch series "Some minor cleanup patches resent". The first three patches trivial clean up patches. And for the patch "kexec: replace crash_mem_range with range", I got a ibm-p9wr ppc64le system to test, it works well. This patch (of 4): elfcorehdr_alloc() allocates a memory chunk for elfcorehdr_addr with kzalloc(). If is_vmcore_usable() returns false, elfcorehdr_addr is a predefined value. If parse_crash_elf_headers() gets some error and returns a negetive value, the elfcorehdr_addr should be released with elfcorehdr_free(). Fix it by calling elfcorehdr_free() when parse_crash_elf_headers() fails. Link: https://lkml.kernel.org/r/20220929042936.22012-1-bhe@redhat.com Link: https://lkml.kernel.org/r/20220929042936.22012-2-bhe@redhat.com Signed-off-by: Jianglei Nie Signed-off-by: Baoquan He Acked-by: Baoquan He Cc: Benjamin Herrenschmidt Cc: Chen Lifu Cc: "Eric W . Biederman" Cc: Li Chen Cc: Michael Ellerman Cc: Paul Mackerras Cc: Petr Mladek Cc: Russell King Cc: ye xingchen Cc: Zeal Robot Signed-off-by: Andrew Morton Signed-off-by: Sasha Levin --- fs/proc/vmcore.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c index f2aa86c421f2..74747571d58e 100644 --- a/fs/proc/vmcore.c +++ b/fs/proc/vmcore.c @@ -1567,6 +1567,7 @@ static int __init vmcore_init(void) return rc; rc = parse_crash_elf_headers(); if (rc) { + elfcorehdr_free(elfcorehdr_addr); pr_warn("Kdump: vmcore not initialized\n"); return rc; } -- 2.35.1