From nobody Fri Dec 19 15:44:53 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 6DF4EFA3748 for ; Mon, 24 Oct 2022 19:43:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231477AbiJXTnL (ORCPT ); Mon, 24 Oct 2022 15:43:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33972 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233520AbiJXTlg (ORCPT ); Mon, 24 Oct 2022 15:41:36 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4B0F0BE15; Mon, 24 Oct 2022 11:11:28 -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 ams.source.kernel.org (Postfix) with ESMTPS id EEDCDB81889; Mon, 24 Oct 2022 12:52:25 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 45F62C433D6; Mon, 24 Oct 2022 12:52:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1666615944; bh=c0nZxzjfGYuNMGZcJm+WxdQoa6sRFvDG8OlRqmeQcp8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Qfbhi4OOn8Ix7WGb+zc5kdearL4gghg2jdt7+D7HxJZKmfs8ppZXdnBUZrVhta1D2 rT/pFQ4cqMHCMgpTRqxpJFu7Lbbp41Btd9brExW8RKdPbCpm191JJ6WfVGyV5ZMrpR E0fpR2SjrgI5OPNIkiQzqhl8zXt7nU1fckHe0v/c= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jianglei Nie , Lyude Paul , Sasha Levin Subject: [PATCH 5.15 443/530] drm/nouveau/nouveau_bo: fix potential memory leak in nouveau_bo_alloc() Date: Mon, 24 Oct 2022 13:33:07 +0200 Message-Id: <20221024113105.105974628@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221024113044.976326639@linuxfoundation.org> References: <20221024113044.976326639@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: Jianglei Nie [ Upstream commit 6dc548745d5b5102e3c53dc5097296ac270b6c69 ] nouveau_bo_alloc() allocates a memory chunk for "nvbo" with kzalloc(). When some error occurs, "nvbo" should be released. But when WARN_ON(pi < 0)) equals true, the function return ERR_PTR without releasing the "nvbo", which will lead to a memory leak. We should release the "nvbo" with kfree() if WARN_ON(pi < 0)) equals true. Signed-off-by: Jianglei Nie Signed-off-by: Lyude Paul Reviewed-by: Lyude Paul Link: https://patchwork.freedesktop.org/patch/msgid/20220705094306.2244103-= 1-niejianglei2021@163.com Signed-off-by: Sasha Levin --- drivers/gpu/drm/nouveau/nouveau_bo.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau= /nouveau_bo.c index 511fb8dfb4c4..da58230bcb1f 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.c +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c @@ -281,8 +281,10 @@ nouveau_bo_alloc(struct nouveau_cli *cli, u64 *size, i= nt *align, u32 domain, break; } =20 - if (WARN_ON(pi < 0)) + if (WARN_ON(pi < 0)) { + kfree(nvbo); return ERR_PTR(-EINVAL); + } =20 /* Disable compression if suitable settings couldn't be found. */ if (nvbo->comp && !vmm->page[pi].comp) { --=20 2.35.1