From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Jiasheng Jiang <jiasheng@iscas.ac.cn>,
Abhinav Kumar <quic_abhinavk@quicinc.com>,
Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
Sasha Levin <sashal@kernel.org>,
robdclark@gmail.com, airlied@gmail.com, daniel@ffwll.ch,
marijn.suijten@somainline.org, vkoul@kernel.org,
dianders@chromium.org, marex@denx.de, vladimir.lypak@gmail.com,
linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org,
freedreno@lists.freedesktop.org
Subject: [PATCH AUTOSEL 5.10 07/19] drm/msm/dsi: Add missing check for alloc_ordered_workqueue
Date: Sun, 26 Feb 2023 21:09:42 -0500 [thread overview]
Message-ID: <20230227020957.1052252-7-sashal@kernel.org> (raw)
In-Reply-To: <20230227020957.1052252-1-sashal@kernel.org>
From: Jiasheng Jiang <jiasheng@iscas.ac.cn>
[ Upstream commit 115906ca7b535afb1fe7b5406c566ccd3873f82b ]
Add check for the return value of alloc_ordered_workqueue as it may return
NULL pointer and cause NULL pointer dereference.
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/517646/
Link: https://lore.kernel.org/r/20230110021651.12770-1-jiasheng@iscas.ac.cn
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/msm/dsi/dsi_host.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index 51e8318cc8ff4..5a76aa1389173 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -1913,6 +1913,9 @@ int msm_dsi_host_init(struct msm_dsi *msm_dsi)
/* setup workqueue */
msm_host->workqueue = alloc_ordered_workqueue("dsi_drm_work", 0);
+ if (!msm_host->workqueue)
+ return -ENOMEM;
+
INIT_WORK(&msm_host->err_work, dsi_err_worker);
INIT_WORK(&msm_host->hpd_work, dsi_hpd_worker);
--
2.39.0
next prev parent reply other threads:[~2023-02-27 2:30 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-27 2:09 [PATCH AUTOSEL 5.10 01/19] drm/amd/display: Fix potential null-deref in dm_resume Sasha Levin
2023-02-27 2:09 ` [PATCH AUTOSEL 5.10 02/19] drm/omap: dsi: Fix excessive stack usage Sasha Levin
2023-02-27 2:09 ` [PATCH AUTOSEL 5.10 03/19] HID: Add Mapping for System Microphone Mute Sasha Levin
2023-02-27 2:09 ` [PATCH AUTOSEL 5.10 04/19] drm/tiny: ili9486: Do not assume 8-bit only SPI controllers Sasha Levin
2023-02-27 2:09 ` [PATCH AUTOSEL 5.10 05/19] drm/radeon: free iio for atombios when driver shutdown Sasha Levin
2023-02-27 2:09 ` [PATCH AUTOSEL 5.10 06/19] drm: amd: display: Fix memory leakage Sasha Levin
2023-02-27 2:09 ` Sasha Levin [this message]
2023-02-27 2:09 ` [PATCH AUTOSEL 5.10 08/19] docs/scripts/gdb: add necessary make scripts_gdb step Sasha Levin
2023-02-27 2:09 ` [PATCH AUTOSEL 5.10 09/19] ASoC: kirkwood: Iterate over array indexes instead of using pointer math Sasha Levin
2023-02-27 2:09 ` [PATCH AUTOSEL 5.10 10/19] regulator: max77802: Bounds check regulator id against opmode Sasha Levin
2023-02-27 2:09 ` [PATCH AUTOSEL 5.10 11/19] regulator: s5m8767: Bounds check id indexing into arrays Sasha Levin
2023-02-27 2:09 ` [PATCH AUTOSEL 5.10 12/19] gfs2: Improve gfs2_make_fs_rw error handling Sasha Levin
2023-02-27 2:09 ` [PATCH AUTOSEL 5.10 13/19] hwmon: (coretemp) Simplify platform device handling Sasha Levin
2023-02-27 2:09 ` [PATCH AUTOSEL 5.10 14/19] pinctrl: at91: use devm_kasprintf() to avoid potential leaks Sasha Levin
2023-02-27 2:09 ` [PATCH AUTOSEL 5.10 15/19] HID: logitech-hidpp: Don't restart communication if not necessary Sasha Levin
2023-02-27 2:09 ` [PATCH AUTOSEL 5.10 16/19] drm: panel-orientation-quirks: Add quirk for Lenovo IdeaPad Duet 3 10IGL5 Sasha Levin
2023-02-27 2:09 ` [PATCH AUTOSEL 5.10 17/19] dm thin: add cond_resched() to various workqueue loops Sasha Levin
2023-02-27 2:09 ` [PATCH AUTOSEL 5.10 18/19] dm cache: " Sasha Levin
2023-02-27 2:09 ` [PATCH AUTOSEL 5.10 19/19] nfsd: zero out pointers after putting nfsd_files on COPY setup error Sasha Levin
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