From: Jiasheng Jiang <jiasheng@iscas.ac.cn> To: robdclark@gmail.com, quic_abhinavk@quicinc.com, dmitry.baryshkov@linaro.org, sean@poorly.run, airlied@gmail.com, daniel@ffwll.ch, swboyd@chromium.org, quic_khsieh@quicinc.com, johan+linaro@kernel.org Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org, Jiasheng Jiang <jiasheng@iscas.ac.cn> Subject: [PATCH] drm/msm/hdmi: Add missing check for alloc_ordered_workqueue Date: Fri, 6 Jan 2023 10:30:11 +0800 [thread overview] Message-ID: <20230106023011.3985-1-jiasheng@iscas.ac.cn> (raw) Add check for the return value of alloc_ordered_workqueue as it may return NULL pointer and cause NULL pointer dereference in `hdmi_hdcp.c` and `hdmi_hpd.c`. Fixes: c6a57a50ad56 ("drm/msm/hdmi: add hdmi hdcp support (V3)") Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn> --- drivers/gpu/drm/msm/hdmi/hdmi.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c index 4d3fdc806bef..8e801ec0b33f 100644 --- a/drivers/gpu/drm/msm/hdmi/hdmi.c +++ b/drivers/gpu/drm/msm/hdmi/hdmi.c @@ -120,6 +120,10 @@ static int msm_hdmi_init(struct hdmi *hdmi) int ret; hdmi->workq = alloc_ordered_workqueue("msm_hdmi", 0); + if (!hdmi->workq) { + ret = -ENOMEM; + goto fail; + } hdmi->i2c = msm_hdmi_i2c_init(hdmi); if (IS_ERR(hdmi->i2c)) { -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: Jiasheng Jiang <jiasheng@iscas.ac.cn> To: robdclark@gmail.com, quic_abhinavk@quicinc.com, dmitry.baryshkov@linaro.org, sean@poorly.run, airlied@gmail.com, daniel@ffwll.ch, swboyd@chromium.org, quic_khsieh@quicinc.com, johan+linaro@kernel.org Cc: linux-arm-msm@vger.kernel.org, Jiasheng Jiang <jiasheng@iscas.ac.cn>, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Subject: [PATCH] drm/msm/hdmi: Add missing check for alloc_ordered_workqueue Date: Fri, 6 Jan 2023 10:30:11 +0800 [thread overview] Message-ID: <20230106023011.3985-1-jiasheng@iscas.ac.cn> (raw) Add check for the return value of alloc_ordered_workqueue as it may return NULL pointer and cause NULL pointer dereference in `hdmi_hdcp.c` and `hdmi_hpd.c`. Fixes: c6a57a50ad56 ("drm/msm/hdmi: add hdmi hdcp support (V3)") Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn> --- drivers/gpu/drm/msm/hdmi/hdmi.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c index 4d3fdc806bef..8e801ec0b33f 100644 --- a/drivers/gpu/drm/msm/hdmi/hdmi.c +++ b/drivers/gpu/drm/msm/hdmi/hdmi.c @@ -120,6 +120,10 @@ static int msm_hdmi_init(struct hdmi *hdmi) int ret; hdmi->workq = alloc_ordered_workqueue("msm_hdmi", 0); + if (!hdmi->workq) { + ret = -ENOMEM; + goto fail; + } hdmi->i2c = msm_hdmi_i2c_init(hdmi); if (IS_ERR(hdmi->i2c)) { -- 2.25.1
next reply other threads:[~2023-01-06 2:30 UTC|newest] Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-01-06 2:30 Jiasheng Jiang [this message] 2023-01-06 2:30 ` [PATCH] drm/msm/hdmi: Add missing check for alloc_ordered_workqueue Jiasheng Jiang 2023-01-08 22:40 ` Dmitry Baryshkov 2023-01-08 22:40 ` Dmitry Baryshkov 2023-01-09 22:41 ` Dmitry Baryshkov 2023-01-09 23:43 ` Dmitry Baryshkov 2023-01-09 23:43 ` Dmitry Baryshkov 2023-01-09 22:41 ` Dmitry Baryshkov
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