From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Ma Ke <make_ruc2021@163.com>,
Alex Deucher <alexander.deucher@amd.com>,
Sasha Levin <sashal@kernel.org>,
christian.koenig@amd.com, Xinhui.Pan@amd.com, airlied@gmail.com,
daniel@ffwll.ch, amd-gfx@lists.freedesktop.org,
dri-devel@lists.freedesktop.org
Subject: [PATCH AUTOSEL 6.6 26/40] drm/radeon: fix a possible null pointer dereference
Date: Tue, 7 Nov 2023 07:16:28 -0500 [thread overview]
Message-ID: <20231107121837.3759358-26-sashal@kernel.org> (raw)
In-Reply-To: <20231107121837.3759358-1-sashal@kernel.org>
From: Ma Ke <make_ruc2021@163.com>
[ Upstream commit 2c1fe3c480f9e1deefd50d4b18be4a046011ee1f ]
In radeon_tv_get_modes(), the return value of drm_cvt_mode()
is assigned to mode, which will lead to a NULL pointer
dereference on failure of drm_cvt_mode(). Add a check to
avoid null point dereference.
Signed-off-by: Ma Ke <make_ruc2021@163.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/radeon/radeon_connectors.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index d2f02c3dfce29..b84b58926106a 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -1119,6 +1119,8 @@ static int radeon_tv_get_modes(struct drm_connector *connector)
else {
/* only 800x600 is supported right now on pre-avivo chips */
tv_mode = drm_cvt_mode(dev, 800, 600, 60, false, false, false);
+ if (!tv_mode)
+ return 0;
tv_mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
drm_mode_probed_add(connector, tv_mode);
}
--
2.42.0
next prev parent reply other threads:[~2023-11-07 12:32 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-07 12:16 [PATCH AUTOSEL 6.6 01/40] drm/gma500: Fix call trace when psb_gem_mm_init() fails Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 02/40] drm/amdkfd: ratelimited SQ interrupt messages Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 03/40] drm/komeda: drop all currently held locks if deadlock happens Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 04/40] drm/amd/display: Blank phantom OTG before enabling Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 05/40] drm/amd/display: Don't lock phantom pipe on disabling Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 06/40] drm/amd/display: add seamless pipe topology transition check Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 07/40] drm/edid: Fixup h/vsync_end instead of h/vtotal Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 08/40] md: don't rely on 'mddev->pers' to be set in mddev_suspend() Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 09/40] drm/amdgpu: not to save bo in the case of RAS err_event_athub Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 10/40] drm/amdkfd: Fix a race condition of vram buffer unref in svm code Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 11/40] drm/amdgpu: update retry times for psp vmbx wait Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 12/40] drm/amd: Update `update_pcie_parameters` functions to use uint8_t arguments Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 13/40] drm/amd/display: use full update for clip size increase of large plane source Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 14/40] string.h: add array-wrappers for (v)memdup_user() Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 15/40] kernel: kexec: copy user-array safely Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 16/40] kernel: watch_queue: " Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 17/40] drm_lease.c: " Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 18/40] drm: vmwgfx_surface.c: " Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 19/40] drm/msm/dp: skip validity check for DP CTS EDID checksum Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 20/40] drm/amd: Fix UBSAN array-index-out-of-bounds for SMU7 Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 21/40] drm/radeon: Fix UBSAN array-index-out-of-bounds for Radeon HD 5430 Sasha Levin
2023-11-07 13:38 ` Alex Deucher
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 22/40] drm/amd: Fix UBSAN array-index-out-of-bounds for Polaris and Tonga Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 23/40] drm/amdgpu: Fix potential null pointer derefernce Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 24/40] drm/panel: fix a possible null pointer dereference Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 25/40] drm/panel/panel-tpo-tpg110: " Sasha Levin
2023-11-07 12:16 ` Sasha Levin [this message]
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 27/40] drm/amdgpu/vkms: " Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 28/40] drm/panel: st7703: Pick different reset sequence Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 29/40] drm/amdkfd: Fix shift out-of-bounds issue Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 30/40] drm/amdgpu: Fix a null pointer access when the smc_rreg pointer is NULL Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 31/40] drm/amd: Disable PP_PCIE_DPM_MASK when dynamic speed switching not supported Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 32/40] drm/amd/display: fix num_ways overflow error Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 33/40] drm/amd: check num of link levels when update pcie param Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 34/40] arm64: dts: renesas: r8a779f0: spider: Enable PCIe Host ch0 Sasha Levin
2023-11-07 18:50 ` Geert Uytterhoeven
2023-11-16 17:58 ` Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 35/40] soc: qcom: pmic: Fix resource leaks in a device_for_each_child_node() loop Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 36/40] arm64: dts: rockchip: add PCIe to rk3588s-indiedroid-nova Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 37/40] arm64: dts: rockchip: add USB2 to rk3588s-indiedroid Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 38/40] arm64: dts: rockchip: Add NanoPC T6 PCIe e-key support Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 39/40] arm64: dts: ls208xa: use a pseudo-bus to constrain usb dma size Sasha Levin
2023-11-07 12:16 ` [PATCH AUTOSEL 6.6 40/40] selftests/efivarfs: create-read: fix a resource leak Sasha Levin
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