From nobody Fri Oct 24 20:26:14 2025 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 0F203C00140 for ; Mon, 15 Aug 2022 20:38:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344672AbiHOUiD (ORCPT ); Mon, 15 Aug 2022 16:38:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43388 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348296AbiHOUc1 (ORCPT ); Mon, 15 Aug 2022 16:32:27 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ACA4913F0F; Mon, 15 Aug 2022 12:05:30 -0700 (PDT) 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 D2AB761299; Mon, 15 Aug 2022 19:05:29 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C8C2BC433D6; Mon, 15 Aug 2022 19:05:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1660590329; bh=r8VC5k8yCnxrmhJJjc40MMt9lv8g2qFUnZotxUDIYhk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=s1m133Y9WgbzeidEUh86d8sbISjNrpGMyVczHLC+t5HHnI+bsB1MrwrtM0Ke5UxcU tnpIczr2dXquMMgoKYvkUHi3wDKxx1kg8v8A85Ccf6A8/QlxfwWdtJKJqo2JkEZ0bN u2InamQ1cCiteE8H9kJ91nWjPJPlpua9+3NQhgJE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Johan Hovold , Borislav Petkov , Sasha Levin Subject: [PATCH 5.18 0198/1095] x86/pmem: Fix platform-device leak in error path Date: Mon, 15 Aug 2022 19:53:17 +0200 Message-Id: <20220815180437.818621157@linuxfoundation.org> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220815180429.240518113@linuxfoundation.org> References: <20220815180429.240518113@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Johan Hovold [ Upstream commit 229e73d46994f15314f58b2d39bf952111d89193 ] Make sure to free the platform device in the unlikely event that registration fails. Fixes: 7a67832c7e44 ("libnvdimm, e820: make CONFIG_X86_PMEM_LEGACY a trista= te option") Signed-off-by: Johan Hovold Signed-off-by: Borislav Petkov Link: https://lore.kernel.org/r/20220620140723.9810-1-johan@kernel.org Signed-off-by: Sasha Levin --- arch/x86/kernel/pmem.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/pmem.c b/arch/x86/kernel/pmem.c index 6b07faaa1579..23154d24b117 100644 --- a/arch/x86/kernel/pmem.c +++ b/arch/x86/kernel/pmem.c @@ -27,6 +27,11 @@ static __init int register_e820_pmem(void) * simply here to trigger the module to load on demand. */ pdev =3D platform_device_alloc("e820_pmem", -1); - return platform_device_add(pdev); + + rc =3D platform_device_add(pdev); + if (rc) + platform_device_put(pdev); + + return rc; } device_initcall(register_e820_pmem); --=20 2.35.1