From nobody Mon Jun 22 15:44:59 2026 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 AF037C433F5 for ; Mon, 21 Mar 2022 23:00:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231624AbiCUXBY (ORCPT ); Mon, 21 Mar 2022 19:01:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47446 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233620AbiCUW7R (ORCPT ); Mon, 21 Mar 2022 18:59:17 -0400 Received: from fanzine2.igalia.com (fanzine.igalia.com [178.60.130.6]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2337E32A591 for ; Mon, 21 Mar 2022 15:47:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=igalia.com; s=20170329; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=piBh/tjqMdJH263YcMC5WTs7iuvgu1VQYTi2OHIKUPI=; b=WrfLJoy9GqnP0b9IGqTfhorFFL NLgE3SSkCmJFiE2jmoWtPp/q7asjGMrwBubHYS2DcgLTuDgsNOHcbrIQ1fQbcn18jZlgLOYpKUBFD jAX7SuOaZrYOVQSvuzbOwiPfTV/zKOH9c3XeabYAFBOGCzmttLBvTzeknlHCWCQVIPckPqgbZukfT m+CtO0eM2upoLqAd9Bb5ncNkuBLRInBZxYXq1Ozpee4jPjhlejhLSbE7rgNc7/triT0cM4+WwjgnW p5lLcaTPfAsLL+E+4EqTeVbM1OMznVTtZmBNwBQJuCWS4iQrQwTKTK6bvk9ewPA/XFOXWwGQYKU4n DTVk60LA==; Received: from [165.90.126.25] (helo=killbill.home) by fanzine2.igalia.com with esmtpsa (Cipher TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim) id 1nWPLc-0000ww-5f; Mon, 21 Mar 2022 22:13:52 +0100 From: Melissa Wen To: emma@anholt.net, airlied@linux.ie, daniel@ffwll.ch Cc: Rob Herring , Melissa Wen , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/2] drm/v3d: cleanup BOs properly when lookup_bos fails Date: Mon, 21 Mar 2022 20:13:15 -0100 Message-Id: <20220321211316.1423294-2-mwen@igalia.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220321211316.1423294-1-mwen@igalia.com> References: <20220321211316.1423294-1-mwen@igalia.com> 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" When v3d_lookup_bos fails to `allocate validated BO pointers`, job->bo_count was already set to args->bo_count, but job->bo points to NULL. In this scenario, we must verify that job->bo is not NULL before iterating on it to proper clean up a job. Also, drm_gem_object_put already checks that the object passed is not NULL, doing the job->bo[i] checker redundant. Signed-off-by: Melissa Wen --- drivers/gpu/drm/v3d/v3d_gem.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/v3d/v3d_gem.c b/drivers/gpu/drm/v3d/v3d_gem.c index 92bc0faee84f..926bfc7e07fb 100644 --- a/drivers/gpu/drm/v3d/v3d_gem.c +++ b/drivers/gpu/drm/v3d/v3d_gem.c @@ -358,11 +358,11 @@ v3d_job_free(struct kref *ref) struct v3d_job *job =3D container_of(ref, struct v3d_job, refcount); int i; =20 - for (i =3D 0; i < job->bo_count; i++) { - if (job->bo[i]) + if (job->bo) { + for (i =3D 0; i < job->bo_count; i++) drm_gem_object_put(job->bo[i]); + kvfree(job->bo); } - kvfree(job->bo); =20 dma_fence_put(job->irq_fence); dma_fence_put(job->done_fence); --=20 2.35.1 From nobody Mon Jun 22 15:44:59 2026 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 38999C433F5 for ; Mon, 21 Mar 2022 22:59:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231220AbiCUXBF (ORCPT ); Mon, 21 Mar 2022 19:01:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58384 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233516AbiCUW7O (ORCPT ); Mon, 21 Mar 2022 18:59:14 -0400 X-Greylist: delayed 5588 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Mon, 21 Mar 2022 15:47:01 PDT Received: from fanzine2.igalia.com (fanzine.igalia.com [178.60.130.6]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 00A2432F2D1 for ; Mon, 21 Mar 2022 15:47:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=igalia.com; s=20170329; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=UxVnGroyv95bnhNLjHCmBweTO25U8rXxdLTQZ0CUFxg=; b=ChedVT+7B/T39CHBClrpYs3jZj N02A9+7/GjMG75Zejvyrnmt+eh8ZUAnETnSQyVcHFpJR0Zl9YcstIV8KbZW3SKXYQxDV1bLEBGnWk Kqe/YzykXnN3qAxcw/omDYjLyz2nK9wkeywm5weibie9iekj8UAYuRjtz4dGWLBhIdPmvWcBXpvFq Lw3CYuojEmkXWxqw3/OZ9fd7xLzZvGMv1eZgUcFyhkgM1YsUbUQnYyKeXfQUCwCXvx99BYnOQpDhH t8jWasPtSTgxEy+vI+HD73N/mmyDT/UHDDFcb/gVPU3fhiT8ArrsI8v7IuwA+iep+3+QM0bd+Fvks hKJKoLCQ==; Received: from [165.90.126.25] (helo=killbill.home) by fanzine2.igalia.com with esmtpsa (Cipher TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim) id 1nWPLi-0000ww-Co; Mon, 21 Mar 2022 22:13:58 +0100 From: Melissa Wen To: emma@anholt.net, airlied@linux.ie, daniel@ffwll.ch Cc: Rob Herring , Melissa Wen , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/2] drm/v3d: replace obj lookup steps with drm_gem_objects_lookup Date: Mon, 21 Mar 2022 20:13:16 -0100 Message-Id: <20220321211316.1423294-3-mwen@igalia.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220321211316.1423294-1-mwen@igalia.com> References: <20220321211316.1423294-1-mwen@igalia.com> 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" As v3d_lookup_bos() performs the same steps as drm_gem_objects_lookup(), replace the explicit code in v3d to simply use the DRM function. Signed-off-by: Melissa Wen --- drivers/gpu/drm/v3d/v3d_gem.c | 49 +++-------------------------------- 1 file changed, 3 insertions(+), 46 deletions(-) diff --git a/drivers/gpu/drm/v3d/v3d_gem.c b/drivers/gpu/drm/v3d/v3d_gem.c index 926bfc7e07fb..738b1080143d 100644 --- a/drivers/gpu/drm/v3d/v3d_gem.c +++ b/drivers/gpu/drm/v3d/v3d_gem.c @@ -294,10 +294,6 @@ v3d_lookup_bos(struct drm_device *dev, u64 bo_handles, u32 bo_count) { - u32 *handles; - int ret =3D 0; - int i; - job->bo_count =3D bo_count; =20 if (!job->bo_count) { @@ -308,48 +304,9 @@ v3d_lookup_bos(struct drm_device *dev, return -EINVAL; } =20 - job->bo =3D kvmalloc_array(job->bo_count, - sizeof(struct drm_gem_cma_object *), - GFP_KERNEL | __GFP_ZERO); - if (!job->bo) { - DRM_DEBUG("Failed to allocate validated BO pointers\n"); - return -ENOMEM; - } - - handles =3D kvmalloc_array(job->bo_count, sizeof(u32), GFP_KERNEL); - if (!handles) { - ret =3D -ENOMEM; - DRM_DEBUG("Failed to allocate incoming GEM handles\n"); - goto fail; - } - - if (copy_from_user(handles, - (void __user *)(uintptr_t)bo_handles, - job->bo_count * sizeof(u32))) { - ret =3D -EFAULT; - DRM_DEBUG("Failed to copy in GEM handles\n"); - goto fail; - } - - spin_lock(&file_priv->table_lock); - for (i =3D 0; i < job->bo_count; i++) { - struct drm_gem_object *bo =3D idr_find(&file_priv->object_idr, - handles[i]); - if (!bo) { - DRM_DEBUG("Failed to look up GEM BO %d: %d\n", - i, handles[i]); - ret =3D -ENOENT; - spin_unlock(&file_priv->table_lock); - goto fail; - } - drm_gem_object_get(bo); - job->bo[i] =3D bo; - } - spin_unlock(&file_priv->table_lock); - -fail: - kvfree(handles); - return ret; + return drm_gem_objects_lookup(file_priv, + (void __user *)(uintptr_t)bo_handles, + job->bo_count, &job->bo); } =20 static void --=20 2.35.1