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 32584C43334 for ; Wed, 8 Jun 2022 00:15:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1383241AbiFGWo3 (ORCPT ); Tue, 7 Jun 2022 18:44:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55844 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1381074AbiFGVbf (ORCPT ); Tue, 7 Jun 2022 17:31:35 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6E00322CBDA; Tue, 7 Jun 2022 12:04:02 -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 20E3FB822C0; Tue, 7 Jun 2022 19:04:01 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 78455C385A2; Tue, 7 Jun 2022 19:03:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1654628639; bh=6X4d72LwQTIc+6PTx5vEOmfhb6pBrV/KYQO5s5tQhc4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tcOLTucFpB7oKXo8+0/TBNh/1OdWv1v2dnf9PXnFiGWcJnK2/467dmbjs6QTNFIu9 c21TanQf/b2w7BjGlA/XEs3AcWfS8mTQ/eQnMrXhOosk/VFVlRtL1gu3AP3BfPp9xG XqYlOdInJYdKwbOr4pb7bCvbmf4/fODKH477R18Y= 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 5.18 401/879] drm/msm: return an error pointer in msm_gem_prime_get_sg_table() Date: Tue, 7 Jun 2022 18:58:39 +0200 Message-Id: <20220607165014.502970283@linuxfoundation.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220607165002.659942637@linuxfoundation.org> References: <20220607165002.659942637@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 e8f1b7a2ca9c..94ab705e9b8a 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