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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,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 DE8E1C606BD for ; Mon, 8 Jul 2019 15:38:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B615920665 for ; Mon, 8 Jul 2019 15:38:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1562600316; bh=YfYnE2EjNzOFpBmQyvvAYXtKa4/nrf6T7RqUEnwwf8o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=M+wK9FeNoR/iODvnOAUCW0tObDWGuEmYdndkShlEXs+iMVLY4w2eLSZgCm4lqW6s4 XXYnOZ5ZS+tw2Ak0IYLPVviyFTwbtlHyjb/fT2fjaCeh5dqE64ZWzlWSCpom3+/hTI JPv8XVdQJaLXzMvK6Y4Suet1vOEcebapB8ODMv8A= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389812AbfGHPaJ (ORCPT ); Mon, 8 Jul 2019 11:30:09 -0400 Received: from mail.kernel.org ([198.145.29.99]:58712 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389716AbfGHP3u (ORCPT ); Mon, 8 Jul 2019 11:29:50 -0400 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 43F8D204EC; Mon, 8 Jul 2019 15:29:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1562599789; bh=YfYnE2EjNzOFpBmQyvvAYXtKa4/nrf6T7RqUEnwwf8o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=R+sRL/Q+bt7DCG8L2FZioQMLe+JWZQdlOyiUXk4Ot/iUUhmhRJfeqs0LXGtN0iOjj TT+gV+ilhkEz2HUV0fMLFRsI/DQ4o1Ix2KKsDrcNcj9ayZX4Qj98m60frGlJnVenPD BcLTnfnQ4pCc1AOKq4NsANCtUAvGhDHDGdot/dec= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Vincent Whitchurch , Herbert Xu Subject: [PATCH 4.19 43/90] crypto: cryptd - Fix skcipher instance memory leak Date: Mon, 8 Jul 2019 17:13:10 +0200 Message-Id: <20190708150524.730642298@linuxfoundation.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190708150521.829733162@linuxfoundation.org> References: <20190708150521.829733162@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: Vincent Whitchurch commit 1a0fad630e0b7cff38e7691b28b0517cfbb0633f upstream. cryptd_skcipher_free() fails to free the struct skcipher_instance allocated in cryptd_create_skcipher(), leading to a memory leak. This is detected by kmemleak on bootup on ARM64 platforms: unreferenced object 0xffff80003377b180 (size 1024): comm "cryptomgr_probe", pid 822, jiffies 4294894830 (age 52.760s) backtrace: kmem_cache_alloc_trace+0x270/0x2d0 cryptd_create+0x990/0x124c cryptomgr_probe+0x5c/0x1e8 kthread+0x258/0x318 ret_from_fork+0x10/0x1c Fixes: 4e0958d19bd8 ("crypto: cryptd - Add support for skcipher") Cc: Signed-off-by: Vincent Whitchurch Signed-off-by: Herbert Xu Signed-off-by: Greg Kroah-Hartman --- crypto/cryptd.c | 1 + 1 file changed, 1 insertion(+) --- a/crypto/cryptd.c +++ b/crypto/cryptd.c @@ -586,6 +586,7 @@ static void cryptd_skcipher_free(struct struct skcipherd_instance_ctx *ctx = skcipher_instance_ctx(inst); crypto_drop_skcipher(&ctx->spawn); + kfree(inst); } static int cryptd_create_skcipher(struct crypto_template *tmpl,