From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Sasha Levin <sashal@kernel.org>,
Anson Jacob <Anson.Jacob@amd.com>,
amd-gfx@lists.freedesktop.org,
Solomon Chiu <solomon.chiu@amd.com>,
Daniel Wheeler <daniel.wheeler@amd.com>,
Aurabindo Jayamohanan Pillai <Aurabindo.Pillai@amd.com>,
dri-devel@lists.freedesktop.org,
Alex Deucher <alexander.deucher@amd.com>
Subject: [PATCH AUTOSEL 5.4 23/57] drm/amd/display: Fix UBSAN warning for not a valid value for type '_Bool'
Date: Mon, 3 May 2021 12:39:07 -0400 [thread overview]
Message-ID: <20210503163941.2853291-23-sashal@kernel.org> (raw)
In-Reply-To: <20210503163941.2853291-1-sashal@kernel.org>
From: Anson Jacob <Anson.Jacob@amd.com>
[ Upstream commit 6a30a92997eee49554f72b462dce90abe54a496f ]
[Why]
dc_cursor_position do not initialise position.translate_by_source when
crtc or plane->state->fb is NULL. UBSAN caught this error in
dce110_set_cursor_position, as the value was garbage.
[How]
Initialise dc_cursor_position structure elements to 0 in handle_cursor_update
before calling get_cursor_position.
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1471
Reported-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Anson Jacob <Anson.Jacob@amd.com>
Reviewed-by: Aurabindo Jayamohanan Pillai <Aurabindo.Pillai@amd.com>
Acked-by: Solomon Chiu <solomon.chiu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 2626aacf492f..1aec841fda35 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -5372,10 +5372,6 @@ static int get_cursor_position(struct drm_plane *plane, struct drm_crtc *crtc,
int x, y;
int xorigin = 0, yorigin = 0;
- position->enable = false;
- position->x = 0;
- position->y = 0;
-
if (!crtc || !plane->state->fb)
return 0;
@@ -5427,7 +5423,7 @@ static void handle_cursor_update(struct drm_plane *plane,
struct dm_crtc_state *crtc_state = crtc ? to_dm_crtc_state(crtc->state) : NULL;
struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
uint64_t address = afb ? afb->address : 0;
- struct dc_cursor_position position;
+ struct dc_cursor_position position = {0};
struct dc_cursor_attributes attributes;
int ret;
--
2.30.2
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next prev parent reply other threads:[~2021-05-03 16:40 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20210503163941.2853291-1-sashal@kernel.org>
2021-05-03 16:38 ` [PATCH AUTOSEL 5.4 03/57] drm/amd/display: Check for DSC support instead of ASIC revision Sasha Levin
2021-05-03 16:38 ` [PATCH AUTOSEL 5.4 04/57] drm/amd/display: Don't optimize bandwidth before disabling planes Sasha Levin
2021-05-03 16:39 ` [PATCH AUTOSEL 5.4 20/57] drm/amdgpu: mask the xgmi number of hops reported from psp to kfd Sasha Levin
2021-05-03 16:39 ` [PATCH AUTOSEL 5.4 21/57] drm/amdkfd: Fix UBSAN shift-out-of-bounds warning Sasha Levin
2021-05-03 16:39 ` [PATCH AUTOSEL 5.4 22/57] drm/amdgpu : Fix asic reset regression issue introduce by 8f211fe8ac7c4f Sasha Levin
2021-05-03 16:39 ` Sasha Levin [this message]
2021-05-03 16:39 ` [PATCH AUTOSEL 5.4 24/57] drm/amd/display: fix dml prefetch validation Sasha Levin
2021-05-03 16:39 ` [PATCH AUTOSEL 5.4 49/57] drm/amdkfd: Fix cat debugfs hang_hws file causes system crash bug Sasha Levin
2021-05-03 16:39 ` [PATCH AUTOSEL 5.4 50/57] amdgpu: avoid incorrect %hu format string Sasha Levin
2021-05-03 16:39 ` [PATCH AUTOSEL 5.4 51/57] drm/amdgpu: fix NULL pointer dereference Sasha Levin
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