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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E7382C43334 for ; Tue, 7 Jun 2022 21:09:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1379154AbiFGVJE (ORCPT ); Tue, 7 Jun 2022 17:09:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50688 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1359223AbiFGUJk (ORCPT ); Tue, 7 Jun 2022 16:09:40 -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 4E448B8BC9; Tue, 7 Jun 2022 11:27:21 -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 D9B0F60906; Tue, 7 Jun 2022 18:27:20 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E59C0C385A2; Tue, 7 Jun 2022 18:27:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1654626440; bh=N2G7P5kX8WC/LFedJRSAAVNnpl8GrNl/yZz/XNcovSg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=wmSWiJSLRh1IHnfvd1z355BhWj+oq/PQI4aEvW9oH85LJ6xvzLFEshsWz6A0NivEW 3/ts74xKnAOppoZDQnRWhLDLE81ZSemNrcGt0AqW+mn53oIDYdkbA2nu8e1mVmg2yc eQd/h8Qp/4koa+Z2zpxCNes+q3MIOywljfj8wRak= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dan Carpenter , Dmitry Baryshkov , Sasha Levin Subject: [PATCH 5.17 342/772] drm/msm: return an error pointer in msm_gem_prime_get_sg_table() Date: Tue, 7 Jun 2022 18:58:54 +0200 Message-Id: <20220607164959.101005403@linuxfoundation.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220607164948.980838585@linuxfoundation.org> References: <20220607164948.980838585@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Dan Carpenter [ Upstream commit cf575e31611eb6dccf08fad02e57e35b2187704d ] The msm_gem_prime_get_sg_table() needs to return error pointers on error. This is called from drm_gem_map_dma_buf() and returning a NULL will lead to a crash in that function. Fixes: ac45146733b0 ("drm/msm: fix msm_gem_prime_get_sg_table()") Signed-off-by: Dan Carpenter Reviewed-by: Dmitry Baryshkov Patchwork: https://patchwork.freedesktop.org/patch/485023/ Link: https://lore.kernel.org/r/YnOmtS5tfENywR9m@kili Signed-off-by: Dmitry Baryshkov Signed-off-by: Sasha Levin --- drivers/gpu/drm/msm/msm_gem_prime.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/msm_gem_prime.c b/drivers/gpu/drm/msm/msm_gem_prime.c index fc94e061d6a7..8a2d94bd5df2 100644 --- a/drivers/gpu/drm/msm/msm_gem_prime.c +++ b/drivers/gpu/drm/msm/msm_gem_prime.c @@ -17,7 +17,7 @@ struct sg_table *msm_gem_prime_get_sg_table(struct drm_gem_object *obj) int npages = obj->size >> PAGE_SHIFT; if (WARN_ON(!msm_obj->pages)) /* should have already pinned! */ - return NULL; + return ERR_PTR(-ENOMEM); return drm_prime_pages_to_sg(obj->dev, msm_obj->pages, npages); } -- 2.35.1