From patchwork Tue Mar 10 12:38:37 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 229439 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 EF314C3F2C6 for ; Tue, 10 Mar 2020 13:37:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BFB0A24649 for ; Tue, 10 Mar 2020 13:37:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583847429; bh=rMQn7kjsa7T0S3IBhZrsTg2HDBVaXevtNP7v9XkF4Dg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=j9DE+IKiLWcsCW4YSmvrBiJaETY4ox1d+b09tmN5UgNdE7M0OR+m4dMwLdfUvIJsr ZGoL9BsJJPxx1EXxY9/PLFHRtuY8fdEkyd1CUQZ1uO3uBOl68zQbwQei53WhV2rMXe +lCHG00D/bOhDr4E93/HkUvfiaolJpNy5kFpc/DU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726877AbgCJMlW (ORCPT ); Tue, 10 Mar 2020 08:41:22 -0400 Received: from mail.kernel.org ([198.145.29.99]:40796 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726837AbgCJMlV (ORCPT ); Tue, 10 Mar 2020 08:41:21 -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 44D1324695; Tue, 10 Mar 2020 12:41:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583844080; bh=rMQn7kjsa7T0S3IBhZrsTg2HDBVaXevtNP7v9XkF4Dg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=I1JxvhDPgDdPbfsnjCQzklPKuKYeH34p3jYxw+MsAleqZaoD5vlZMGSgwDJve/kcb HBer8cTXymqF4VCWBT2qnulLughtIaoKkViJa9HFSlLkHA1QXxJ2MhRXNT3OoAJF3y /nieGO+TXiFXQ+bNESnLDMU1h0CttBVCiuFoe6qc= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Christophe JAILLET , Paul Burton , ralf@linux-mips.org, linux-mips@vger.kernel.org, kernel-janitors@vger.kernel.org Subject: [PATCH 4.4 24/72] MIPS: VPE: Fix a double free and a memory leak in release_vpe() Date: Tue, 10 Mar 2020 13:38:37 +0100 Message-Id: <20200310123607.860475256@linuxfoundation.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200310123601.053680753@linuxfoundation.org> References: <20200310123601.053680753@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Christophe JAILLET commit bef8e2dfceed6daeb6ca3e8d33f9c9d43b926580 upstream. Pointer on the memory allocated by 'alloc_progmem()' is stored in 'v->load_addr'. So this is this memory that should be freed by 'release_progmem()'. 'release_progmem()' is only a call to 'kfree()'. With the current code, there is both a double free and a memory leak. Fix it by passing the correct pointer to 'release_progmem()'. Fixes: e01402b115ccc ("More AP / SP bits for the 34K, the Malta bits and things. Still wants") Signed-off-by: Christophe JAILLET Signed-off-by: Paul Burton Cc: ralf@linux-mips.org Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: kernel-janitors@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- arch/mips/kernel/vpe.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/mips/kernel/vpe.c +++ b/arch/mips/kernel/vpe.c @@ -134,7 +134,7 @@ void release_vpe(struct vpe *v) { list_del(&v->list); if (v->load_addr) - release_progmem(v); + release_progmem(v->load_addr); kfree(v); }