linux-kernel - [PATCH AUTOSEL 6.10 026/121] drm/amd/display: Release clck_src memory if clk_src

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240801000834.3930818-26-sashal@kernel.org>
Date: Wed, 31 Jul 2024 19:59:24 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Hersen Wu <hersenxs.wu@....com>,
	Harry Wentland <harry.wentland@....com>,
	Tom Chung <chiahsuan.chung@....com>,
	Daniel Wheeler <daniel.wheeler@....com>,
	Alex Deucher <alexander.deucher@....com>,
	Sasha Levin <sashal@...nel.org>,
	sunpeng.li@....com,
	Rodrigo.Siqueira@....com,
	christian.koenig@....com,
	Xinhui.Pan@....com,
	airlied@...il.com,
	daniel@...ll.ch,
	martin.leung@....com,
	moadhuri@....com,
	wayne.lin@....com,
	Bhawanpreet.Lakha@....com,
	wenjing.liu@....com,
	hamza.mahfooz@....com,
	mghaddar@....com,
	max.tseng@....com,
	nicholas.kazlauskas@....com,
	charlene.liu@....com,
	Qingqing.Zhuo@....com,
	ahmed.ahmed@....com,
	daniel.miess@....com,
	sungkim@....com,
	amd-gfx@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 6.10 026/121] drm/amd/display: Release clck_src memory if clk_src_construct fails

From: Hersen Wu <hersenxs.wu@....com>

[ Upstream commit 674704a5dabe4a434645fdd11e35437f4e06dfc4 ]

[Why]
Coverity reports RESOURCE_LEAK for some implemenations
of clock_source_create. Do not release memory of clk_src
if contructor fails.

[How]
Free clk_src if contructor fails.

Reviewed-by: Harry Wentland <harry.wentland@....com>
Acked-by: Tom Chung <chiahsuan.chung@....com>
Signed-off-by: Hersen Wu <hersenxs.wu@....com>
Tested-by: Daniel Wheeler <daniel.wheeler@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 .../gpu/drm/amd/display/dc/resource/dce80/dce80_resource.c    | 1 +
 .../gpu/drm/amd/display/dc/resource/dcn31/dcn31_resource.c    | 1 +
 .../gpu/drm/amd/display/dc/resource/dcn314/dcn314_resource.c  | 4 ++--
 .../gpu/drm/amd/display/dc/resource/dcn35/dcn35_resource.c    | 1 +
 .../gpu/drm/amd/display/dc/resource/dcn351/dcn351_resource.c  | 1 +
 5 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/resource/dce80/dce80_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dce80/dce80_resource.c
index 56ee45e12b461..a73d3c6ef4258 100644
--- a/drivers/gpu/drm/amd/display/dc/resource/dce80/dce80_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/resource/dce80/dce80_resource.c
@@ -1538,6 +1538,7 @@ struct resource_pool *dce83_create_resource_pool(
 	if (dce83_construct(num_virtual_links, dc, pool))
 		return &pool->base;
 
+	kfree(pool);
 	BREAK_TO_DEBUGGER();
 	return NULL;
 }
diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn31/dcn31_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn31/dcn31_resource.c
index d4c3e2754f516..5d1801dce2730 100644
--- a/drivers/gpu/drm/amd/display/dc/resource/dcn31/dcn31_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/resource/dcn31/dcn31_resource.c
@@ -1864,6 +1864,7 @@ static struct clock_source *dcn30_clock_source_create(
 		return &clk_src->base;
 	}
 
+	kfree(clk_src);
 	BREAK_TO_DEBUGGER();
 	return NULL;
 }
diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn314/dcn314_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn314/dcn314_resource.c
index ff50f43e4c000..da73e842c55c8 100644
--- a/drivers/gpu/drm/amd/display/dc/resource/dcn314/dcn314_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/resource/dcn314/dcn314_resource.c
@@ -1660,8 +1660,8 @@ static struct clock_source *dcn31_clock_source_create(
 		return &clk_src->base;
 	}
 
-	BREAK_TO_DEBUGGER();
 	kfree(clk_src);
+	BREAK_TO_DEBUGGER();
 	return NULL;
 }
 
@@ -1821,8 +1821,8 @@ static struct clock_source *dcn30_clock_source_create(
 		return &clk_src->base;
 	}
 
-	BREAK_TO_DEBUGGER();
 	kfree(clk_src);
+	BREAK_TO_DEBUGGER();
 	return NULL;
 }
 
diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn35/dcn35_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn35/dcn35_resource.c
index 2df8a742516c8..28c4599076989 100644
--- a/drivers/gpu/drm/amd/display/dc/resource/dcn35/dcn35_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/resource/dcn35/dcn35_resource.c
@@ -1716,6 +1716,7 @@ static struct clock_source *dcn35_clock_source_create(
 		return &clk_src->base;
 	}
 
+	kfree(clk_src);
 	BREAK_TO_DEBUGGER();
 	return NULL;
 }
diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn351/dcn351_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn351/dcn351_resource.c
index ddf9560ab7722..b7bd0f36125a4 100644
--- a/drivers/gpu/drm/amd/display/dc/resource/dcn351/dcn351_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/resource/dcn351/dcn351_resource.c
@@ -1696,6 +1696,7 @@ static struct clock_source *dcn35_clock_source_create(
 		return &clk_src->base;
 	}
 
+	kfree(clk_src);
 	BREAK_TO_DEBUGGER();
 	return NULL;
 }
-- 
2.43.0