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 C968BC433EF for ; Mon, 13 Jun 2022 11:17:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1352719AbiFMLRF (ORCPT ); Mon, 13 Jun 2022 07:17:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46640 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1353452AbiFMLPn (ORCPT ); Mon, 13 Jun 2022 07:15:43 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2BC0D38182; Mon, 13 Jun 2022 03:38:06 -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 748EB610A0; Mon, 13 Jun 2022 10:38:06 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 58C5FC34114; Mon, 13 Jun 2022 10:38:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1655116685; bh=tbtcsQGUGyHo1TtcIeqqsRZNhmca5h/b9G5p+CEPjQw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Q55f4/vF0KsIHmkaLz05MmZ0Zdb2zHeClDFIsiP9xO8XrKV+6K9V7zzXfJ424bS76 dQaqsPu5Ce5uRBsBKfhmP/+kVvyJhXXO861UP31Xa+mvBM4xgKtJIIPVmilgCrlPdm Bt91JnDkht3gOlSSsjJu2Tloyppa5kwP2GxUIsfA= 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 5.4 126/411] drm/msm: return an error pointer in msm_gem_prime_get_sg_table() Date: Mon, 13 Jun 2022 12:06:39 +0200 Message-Id: <20220613094932.451903869@linuxfoundation.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220613094928.482772422@linuxfoundation.org> References: <20220613094928.482772422@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: stable@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 d7c8948427fe..705a834ba1e6 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(msm_obj->pages, npages); } -- 2.35.1