From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Nur Hussein <hussein@unixcat.org>,
Thierry Reding <treding@nvidia.com>,
Sasha Levin <sashal@kernel.org>,
thierry.reding@gmail.com, mperttunen@nvidia.com,
airlied@gmail.com, daniel@ffwll.ch, jonathanh@nvidia.com,
dri-devel@lists.freedesktop.org, linux-tegra@vger.kernel.org
Subject: [PATCH AUTOSEL 6.2 24/37] drm/tegra: Avoid potential 32-bit integer overflow
Date: Sun, 30 Apr 2023 22:59:32 -0400 [thread overview]
Message-ID: <20230501025945.3253774-24-sashal@kernel.org> (raw)
In-Reply-To: <20230501025945.3253774-1-sashal@kernel.org>
From: Nur Hussein <hussein@unixcat.org>
[ Upstream commit 2429b3c529da29d4277d519bd66d034842dcd70c ]
In tegra_sor_compute_config(), the 32-bit value mode->clock is
multiplied by 1000, and assigned to the u64 variable pclk. We can avoid
a potential 32-bit integer overflow by casting mode->clock to u64 before
we do the arithmetic and assignment.
Signed-off-by: Nur Hussein <hussein@unixcat.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/tegra/sor.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c
index 8af632740673a..77723d5f1d3fd 100644
--- a/drivers/gpu/drm/tegra/sor.c
+++ b/drivers/gpu/drm/tegra/sor.c
@@ -1153,7 +1153,7 @@ static int tegra_sor_compute_config(struct tegra_sor *sor,
struct drm_dp_link *link)
{
const u64 f = 100000, link_rate = link->rate * 1000;
- const u64 pclk = mode->clock * 1000;
+ const u64 pclk = (u64)mode->clock * 1000;
u64 input, output, watermark, num;
struct tegra_sor_params params;
u32 num_syms_per_line;
--
2.39.2
next prev parent reply other threads:[~2023-05-01 3:06 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-01 2:59 [PATCH AUTOSEL 6.2 01/37] drm/displayid: add displayid_get_header() and check bounds better Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 02/37] drm/amd/display: populate subvp cmd info only for the top pipe Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 03/37] drm/amd/display: Correct DML calculation to align HW formula Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 04/37] drm/amd/display: enable DPG when disabling plane for phantom pipe Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 05/37] platform/x86: x86-android-tablets: Add Acer Iconia One 7 B1-750 data Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 06/37] drm/amd/display: Enable HostVM based on rIOMMU active Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 07/37] drm/amd/display: Use DC_LOG_DC in the trasform pixel function Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 08/37] regmap: cache: Return error in cache sync operations for REGCACHE_NONE Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 09/37] remoteproc: imx_dsp_rproc: Add custom memory copy implementation for i.MX DSP Cores Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 10/37] arm64: dts: qcom: msm8996: Add missing DWC3 quirks Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 11/37] accel/habanalabs: postpone mem_mgr IDR destruction to hpriv_release() Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 12/37] media: imx-jpeg: Bounds check sizeimage access Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 13/37] media: cx23885: Fix a null-ptr-deref bug in buffer_prepare() and buffer_finish() Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 14/37] media: pci: tw68: Fix null-ptr-deref bug in buf prepare and finish Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 15/37] media: pvrusb2: VIDEO_PVRUSB2 depends on DVB_CORE to use dvb_* symbols Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 16/37] ACPI: processor: Check for null return of devm_kzalloc() in fch_misc_setup() Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 17/37] drm/rockchip: dw_hdmi: cleanup drm encoder during unbind Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 18/37] memstick: r592: Fix UAF bug in r592_remove due to race condition Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 19/37] arm64: dts: imx8mq-librem5: Remove dis_u3_susphy_quirk from usb_dwc3_0 Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 20/37] firmware: arm_sdei: Fix sleep from invalid context BUG Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 21/37] ACPI: EC: Fix oops when removing custom query handlers Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 22/37] drm/amd/display: fixed dcn30+ underflow issue Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 23/37] remoteproc: stm32_rproc: Add mutex protection for workqueue Sasha Levin
2023-05-01 2:59 ` Sasha Levin [this message]
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 25/37] drm/msm/dp: Clean up handling of DP AUX interrupts Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 26/37] ACPICA: Avoid undefined behavior: applying zero offset to null pointer Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 27/37] ACPICA: ACPICA: check null return of ACPI_ALLOCATE_ZEROED in acpi_db_display_objects Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 28/37] arm64: dts: qcom: sdm845-polaris: Drop inexistent properties Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 29/37] irqchip/gicv3: Workaround for NVIDIA erratum T241-FABRIC-4 Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 30/37] media: cros-ec-cec: Don't exit early in .remove() callback Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 31/37] ACPI: video: Remove desktops without backlight DMI quirks Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 32/37] drm/amd/display: Correct DML calculation to follow HW SPEC Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 33/37] drm/amd: Fix an out of bounds error in BIOS parser Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 34/37] drm/amdgpu: Fix sdma v4 sw fini error Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 35/37] media: Prefer designated initializers over memset for subdev pad ops Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 36/37] drm/amdgpu: Enable IH retry CAM on GFX9 Sasha Levin
2023-05-01 2:59 ` [PATCH AUTOSEL 6.2 37/37] media: mediatek: vcodec: Fix potential array out-of-bounds in decoder queue_setup Sasha Levin
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