linux-kernel - [PATCH v2 3/5] drm/amd/display: Add ASSERT

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: <20250106090306.5579-1-yangtiezhu@loongson.cn>
Date: Mon,  6 Jan 2025 17:03:06 +0800
From: Tiezhu Yang <yangtiezhu@...ngson.cn>
To: Alex Deucher <alexander.deucher@....com>,
	Christian König <christian.koenig@....com>,
	Xinhui Pan <Xinhui.Pan@....com>,
	Harry Wentland <harry.wentland@....com>,
	Leo Li <sunpeng.li@....com>,
	Rodrigo Siqueira <Rodrigo.Siqueira@....com>
Cc: Nathan Chancellor <nathan@...nel.org>,
	Josh Poimboeuf <jpoimboe@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	loongarch@...ts.linux.dev,
	amd-gfx@...ts.freedesktop.org,
	llvm@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 3/5] drm/amd/display: Add ASSERT_BUG() macro definition

In order to keep the current ability for the aim of debugging and avoid
printing the warning message twice, add ASSERT_BUG() macro definition to
harden the callers of division functions.

Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
---
 drivers/gpu/drm/amd/display/dc/os_types.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/os_types.h b/drivers/gpu/drm/amd/display/dc/os_types.h
index 42f3712aef9e..13efefb24899 100644
--- a/drivers/gpu/drm/amd/display/dc/os_types.h
+++ b/drivers/gpu/drm/amd/display/dc/os_types.h
@@ -79,6 +79,11 @@
 			dc_breakpoint();	\
 	} while (0)
 
+#define ASSERT_BUG(expr) do {			\
+		dc_breakpoint();		\
+		BUG_ON(!(expr));		\
+	} while (0)
+
 #define BREAK_TO_DEBUGGER() \
 	do { \
 		DRM_DEBUG_DRIVER("%s():%d\n", __func__, __LINE__); \
-- 
2.42.0