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From: Rob Clark <robin.clark@oss.qualcomm.com>
To: dri-devel@lists.freedesktop.org
Cc: linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org,
	Rob Clark <robin.clark@oss.qualcomm.com>,
	Dmitry Baryshkov <lumag@kernel.org>,
	Abhinav Kumar <abhinav.kumar@linux.dev>,
	Jessica Zhang <jesszhan0024@gmail.com>,
	Sean Paul <sean@poorly.run>,
	Marijn Suijten <marijn.suijten@somainline.org>,
	David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>,
	linux-kernel@vger.kernel.org (open list)
Subject: [PATCH v6 06/16] drm/msm: Remove redundant SIZE_MAX check
Date: Fri, 17 Jul 2026 13:48:22 -0700	[thread overview]
Message-ID: <20260717204841.26120-7-robin.clark@oss.qualcomm.com> (raw)
In-Reply-To: <20260717204841.26120-1-robin.clark@oss.qualcomm.com>

kmalloc() will already fail and return NULL if passed SIZE_MAX.

Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>
---
 drivers/gpu/drm/msm/msm_gem_submit.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c
index aa48ea4e7f58..040354ee16d1 100644
--- a/drivers/gpu/drm/msm/msm_gem_submit.c
+++ b/drivers/gpu/drm/msm/msm_gem_submit.c
@@ -250,11 +250,6 @@ static int submit_lookup_cmds(struct msm_gem_submit *submit,
 
 		sz = array_size(submit_cmd.nr_relocs,
 				sizeof(struct drm_msm_gem_submit_reloc));
-		/* check for overflow: */
-		if (sz == SIZE_MAX) {
-			ret = -ENOMEM;
-			goto out;
-		}
 		submit->cmd[i].relocs = kmalloc(sz, GFP_KERNEL | __GFP_NOWARN);
 		if (!submit->cmd[i].relocs) {
 			ret = -ENOMEM;
-- 
2.55.0


  parent reply	other threads:[~2026-07-17 20:49 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-17 20:48 [PATCH v6 00/16] drm/msm: A couple lazy-vm fixes Rob Clark
2026-07-17 20:48 ` [PATCH v6 01/16] drm/msm: Fix barriers accessing ctx vm Rob Clark
2026-07-17 21:07   ` sashiko-bot
2026-07-17 20:48 ` [PATCH v6 02/16] drm/msm: Rework queuelock Rob Clark
2026-07-17 21:00   ` sashiko-bot
2026-07-17 20:48 ` [PATCH v6 03/16] drm/msm: Synchronize VM creation on ctxlock Rob Clark
2026-07-17 21:05   ` sashiko-bot
2026-07-17 20:48 ` [PATCH v6 04/16] drm/msm: Synchronize set_sysprof " Rob Clark
2026-07-17 20:48 ` [PATCH v6 05/16] drm/msm: Move nr_cmds initialization Rob Clark
2026-07-17 21:06   ` sashiko-bot
2026-07-17 20:48 ` Rob Clark [this message]
2026-07-17 20:58   ` [PATCH v6 06/16] drm/msm: Remove redundant SIZE_MAX check sashiko-bot
2026-07-17 20:48 ` [PATCH v6 07/16] drm/msm/a6xx: Access VM directly in submit path Rob Clark
2026-07-17 21:03   ` sashiko-bot
2026-07-17 20:48 ` [PATCH v6 08/16] drm/msm: Add helper to check for per-process pgtables VM Rob Clark
2026-07-17 20:48 ` [PATCH v6 09/16] drm/msm/gem: Remove useless locking in GEM import Rob Clark
2026-07-17 21:02   ` sashiko-bot
2026-07-17 20:48 ` [PATCH v6 10/16] drm/msm/gem: Extract bookkeeping init helper Rob Clark
2026-07-17 21:22   ` sashiko-bot
2026-07-17 20:48 ` [PATCH v6 11/16] drm/msm/gem: Set resv before exposing obj Rob Clark
2026-07-17 21:06   ` sashiko-bot
2026-07-17 20:48 ` [PATCH v6 12/16] drm/msm/gem: Validate lazy VM in GEM_NEW Rob Clark
2026-07-17 21:05   ` sashiko-bot
2026-07-17 20:48 ` [PATCH v6 13/16] drm/msm: Allow lazy VM creation to fail Rob Clark
2026-07-17 20:48 ` [PATCH v6 14/16] drm/msm: Don't fallback to shared VM for VM_BIND Rob Clark
2026-07-17 21:07   ` sashiko-bot
2026-07-17 20:48 ` [PATCH v6 15/16] drm/msm: Fix per-process-pgtables check Rob Clark
2026-07-17 20:48 ` [PATCH v6 16/16] drm/msm: Fixup invalid overflow check Rob Clark

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