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 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 426D6C4332F for ; Sat, 17 Dec 2022 15:29:26 +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:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=cgTYeSckQTxbb0TaD70GDI2XJDJcc/aajLNi0+Qozuc=; b=X/aVgdSggPhVxS KJsuOUEOnIceUUsPfgfqRyYcFFhqRsYBl4PjsTwZUg/kxYBrBeGOKVmLSlDXtOGItfWdRddPcfuNA OmiUYI+i7xhGA1UrxsAIr/WwlXucBOADJcjUl0YbSl2N84nGQucLXmsx7NvJnyLzhfIcYsnM47WM+ 8fhusQW81j8qvH3g8CF7oZjdzzj0KJY3XsedwHcCoBHYhYzSn6nEY0vmqLAfctcD4dP36Wm0f7C9m wOEa4tzuSow1ljBwYvQ7w9oMr4dj6NdvJSGX9cXlOGlfoZKyXrkLLqk6RWVFr9o6U2+Ouh+nHjsw7 QW6wQHt2/JAr+ebUjlSQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1p6Z7o-00AaVL-Cr; Sat, 17 Dec 2022 15:29:20 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1p6Z7l-00AaU1-3D for kexec@lists.infradead.org; Sat, 17 Dec 2022 15:29:18 +0000 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 dfw.source.kernel.org (Postfix) with ESMTPS id A83C960C17; Sat, 17 Dec 2022 15:29:16 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B1794C433F0; Sat, 17 Dec 2022 15:29:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1671290956; bh=HogrSsBYy7kIgZO34up4ieXnOK9WeL0SfkO5lVszAss=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SUijpDPmEgHvX9wLHOeaAepemYJTm25dcDHGY6SlroCqQPzvTO39420CKY551CCTZ xTtH8klEr0viVZRFNuZP1sOeKHUT7nAUTlc//mxFz3/7LEJPApe9bC9UO9Y1go4DMP o0z+7+S/OnHgNyigE6t1cT5ISTovLrtr/TrB9eoK+LnOyTO1sTbdiYwopiHvnaA34a 5BgVMnJRbtoH/afZFDZP9e411GzD60R1yQKohiLrPs5C+AdE4UhldEtaeRJSDgrAd3 8g680q6SUiVLpHh+6BrjgEx/xp99UESsnEGhHAPkSFAFtIBg/bczFLRFK1aOqU3mbS M3I5H9abE35pQ== 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 5.15 06/10] proc/vmcore: fix potential memory leak in vmcore_init() Date: Sat, 17 Dec 2022 10:28:56 -0500 Message-Id: <20221217152902.98870-6-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20221217152902.98870-1-sashal@kernel.org> References: <20221217152902.98870-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221217_072917_240574_678D82E3 X-CRM114-Status: GOOD ( 12.91 ) X-BeenThere: kexec@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kexec" Errors-To: kexec-bounces+kexec=archiver.kernel.org@lists.infradead.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 e5730986758f..d3286d8634d9 100644 --- a/fs/proc/vmcore.c +++ b/fs/proc/vmcore.c @@ -1550,6 +1550,7 @@ 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 _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec