From patchwork Tue Mar 10 12:41:06 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 11429305 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9B41B139A for ; Tue, 10 Mar 2020 13:20:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 79B1C222D9 for ; Tue, 10 Mar 2020 13:20:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583846428; bh=rMQn7kjsa7T0S3IBhZrsTg2HDBVaXevtNP7v9XkF4Dg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=UFDpKr0Tgncxurarxfxkxxb7+wt2rKm3u5tUn4DiuwQBZYQ/32Ezj29O6/BAuV7r4 M80crk65J4V6w7+MM4d+x12su4rWSpnKZAFIoBe9FLzzw1u38v0s25cZZHBEaIMnmv +oqbN6baT8YlbPwMTsdQtoDNPKLEXwI7mz9ja0+U= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729685AbgCJNUX (ORCPT ); Tue, 10 Mar 2020 09:20:23 -0400 Received: from mail.kernel.org ([198.145.29.99]:53068 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730951AbgCJNHT (ORCPT ); Tue, 10 Mar 2020 09:07:19 -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 1C68620409; Tue, 10 Mar 2020 13:07:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583845638; bh=rMQn7kjsa7T0S3IBhZrsTg2HDBVaXevtNP7v9XkF4Dg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=e20auHCVYrL6VsKvlvwHe75hIYKfpXsbj2Sq6mzUoSKgdfJrvmMOvRmGEBNsXcttS q0CXG5oDedBCh+PtQWI58iNmyFtMbooLq/eiDtTNW6YKH4Ctrucih2YcTVmsYpxqoo KgPvwlZmzFc/nh1fdfnrCkscQoEc8HpuK9tkL4W8= 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 4.14 045/126] MIPS: VPE: Fix a double free and a memory leak in release_vpe() Date: Tue, 10 Mar 2020 13:41:06 +0100 Message-Id: <20200310124207.176316001@linuxfoundation.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200310124203.704193207@linuxfoundation.org> References: <20200310124203.704193207@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@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); }