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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Bernard Zhao <bernard@vivo.com>,
	Rob Clark <robdclark@chromium.org>,
	Sasha Levin <sashal@kernel.org>,
	linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org,
	freedreno@lists.freedesktop.org
Subject: [PATCH AUTOSEL 5.7 01/30] drm/msm: fix potential memleak in error branch
Date: Wed,  8 Jul 2020 11:40:47 -0400	[thread overview]
Message-ID: <20200708154116.3199728-1-sashal@kernel.org> (raw)

From: Bernard Zhao <bernard@vivo.com>

[ Upstream commit 177d3819633cd520e3f95df541a04644aab4c657 ]

In function msm_submitqueue_create, the queue is a local
variable, in return -EINVAL branch, queue didn`t add to ctx`s
list yet, and also didn`t kfree, this maybe bring in potential
memleak.

Signed-off-by: Bernard Zhao <bernard@vivo.com>
[trivial commit msg fixup]
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/msm/msm_submitqueue.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/msm_submitqueue.c b/drivers/gpu/drm/msm/msm_submitqueue.c
index 001fbf537440a..a1d94be7883a0 100644
--- a/drivers/gpu/drm/msm/msm_submitqueue.c
+++ b/drivers/gpu/drm/msm/msm_submitqueue.c
@@ -71,8 +71,10 @@ int msm_submitqueue_create(struct drm_device *drm, struct msm_file_private *ctx,
 	queue->flags = flags;
 
 	if (priv->gpu) {
-		if (prio >= priv->gpu->nr_rings)
+		if (prio >= priv->gpu->nr_rings) {
+			kfree(queue);
 			return -EINVAL;
+		}
 
 		queue->prio = prio;
 	}
-- 
2.25.1


WARNING: multiple messages have this Message-ID (diff)
From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Rob Clark <robdclark@chromium.org>,
	Sasha Levin <sashal@kernel.org>, Bernard Zhao <bernard@vivo.com>,
	dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org,
	freedreno@lists.freedesktop.org
Subject: [PATCH AUTOSEL 5.7 01/30] drm/msm: fix potential memleak in error branch
Date: Wed,  8 Jul 2020 11:40:47 -0400	[thread overview]
Message-ID: <20200708154116.3199728-1-sashal@kernel.org> (raw)

From: Bernard Zhao <bernard@vivo.com>

[ Upstream commit 177d3819633cd520e3f95df541a04644aab4c657 ]

In function msm_submitqueue_create, the queue is a local
variable, in return -EINVAL branch, queue didn`t add to ctx`s
list yet, and also didn`t kfree, this maybe bring in potential
memleak.

Signed-off-by: Bernard Zhao <bernard@vivo.com>
[trivial commit msg fixup]
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/msm/msm_submitqueue.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/msm_submitqueue.c b/drivers/gpu/drm/msm/msm_submitqueue.c
index 001fbf537440a..a1d94be7883a0 100644
--- a/drivers/gpu/drm/msm/msm_submitqueue.c
+++ b/drivers/gpu/drm/msm/msm_submitqueue.c
@@ -71,8 +71,10 @@ int msm_submitqueue_create(struct drm_device *drm, struct msm_file_private *ctx,
 	queue->flags = flags;
 
 	if (priv->gpu) {
-		if (prio >= priv->gpu->nr_rings)
+		if (prio >= priv->gpu->nr_rings) {
+			kfree(queue);
 			return -EINVAL;
+		}
 
 		queue->prio = prio;
 	}
-- 
2.25.1

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             reply	other threads:[~2020-07-08 15:41 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-08 15:40 Sasha Levin [this message]
2020-07-08 15:40 ` [PATCH AUTOSEL 5.7 01/30] drm/msm: fix potential memleak in error branch Sasha Levin
2020-07-08 15:40 ` [PATCH AUTOSEL 5.7 02/30] drm/msm/dpu: allow initialization of encoder locks during encoder init Sasha Levin
2020-07-08 15:40   ` Sasha Levin
2020-07-08 15:40 ` [PATCH AUTOSEL 5.7 03/30] ima: extend boot_aggregate with kernel measurements Sasha Levin
2020-07-08 16:13   ` Mimi Zohar
2020-07-09  1:27     ` Sasha Levin
2020-11-29 13:17       ` Mimi Zohar
2020-12-01  0:21         ` Sasha Levin
2020-12-01  3:13           ` Mimi Zohar
2020-12-02 23:53             ` Sasha Levin
2020-12-11  3:10         ` Tyler Hicks
2020-12-11 11:01           ` Mimi Zohar
2020-12-11 17:46             ` James Bottomley
2020-12-13  2:22               ` Mimi Zohar
2020-12-28 19:28                 ` Ken Goldman
2020-12-29  2:01                   ` Mimi Zohar
2020-12-14 16:42             ` Tyler Hicks
2021-01-12 15:35               ` Tyler Hicks
2021-01-12 16:56                 ` Mimi Zohar
2020-07-08 15:40 ` [PATCH AUTOSEL 5.7 04/30] drm/exynos: Properly propagate return value in drm_iommu_attach_device() Sasha Levin
2020-07-08 15:40   ` Sasha Levin
2020-07-08 15:40   ` Sasha Levin
2020-07-08 15:40 ` [PATCH AUTOSEL 5.7 05/30] drm/exynos: fix ref count leak in mic_pre_enable Sasha Levin
2020-07-08 15:40   ` Sasha Levin
2020-07-08 15:40   ` Sasha Levin
2020-07-08 15:40 ` [PATCH AUTOSEL 5.7 06/30] x86/fpu: Reset MXCSR to default in kernel_fpu_begin() Sasha Levin
2020-07-08 15:40 ` [PATCH AUTOSEL 5.7 07/30] exfat: Set the unused characters of FileName field to the value 0000h Sasha Levin
2020-07-08 15:40 ` [PATCH AUTOSEL 5.7 08/30] exfat: call sync_filesystem for read-only remount Sasha Levin
2020-07-08 15:40 ` [PATCH AUTOSEL 5.7 09/30] thermal/drivers: imx: Fix missing of_node_put() at probe time Sasha Levin
2020-07-08 15:40   ` Sasha Levin
2020-07-08 15:40 ` [PATCH AUTOSEL 5.7 10/30] ACPI: DPTF: Add battery participant for TigerLake Sasha Levin
2020-07-08 15:40 ` [PATCH AUTOSEL 5.7 11/30] blk-mq-debugfs: update blk_queue_flag_name[] accordingly for new flags Sasha Levin
2020-07-08 15:40 ` [PATCH AUTOSEL 5.7 12/30] m68k: nommu: register start of the memory with memblock Sasha Levin
2020-07-08 15:40 ` [PATCH AUTOSEL 5.7 13/30] m68k: mm: fix node memblock init Sasha Levin

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