linux-kernel - [PATCH v1] drivers:gt:Switch to use kmemdup

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Message-Id: <20240820074505.2728118-1-yujiaoliang@vivo.com>
Date: Tue, 20 Aug 2024 15:45:03 +0800
From: Yu Jiaoliang <yujiaoliang@...o.com>
To: Jani Nikula <jani.nikula@...ux.intel.com>,
	Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
	Rodrigo Vivi <rodrigo.vivi@...el.com>,
	Tvrtko Ursulin <tursulin@...ulin.net>,
	David Airlie <airlied@...il.com>,
	Daniel Vetter <daniel@...ll.ch>,
	Matt Roper <matthew.d.roper@...el.com>,
	Andi Shyti <andi.shyti@...ux.intel.com>,
	Michal Mrozek <michal.mrozek@...el.com>,
	Gustavo Sousa <gustavo.sousa@...el.com>,
	Lucas De Marchi <lucas.demarchi@...el.com>,
	Tejas Upadhyay <tejas.upadhyay@...el.com>,
	Shekhar Chauhan <shekhar.chauhan@...el.com>,
	intel-gfx@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org
Cc: opensource.kernel@...o.com,
	Yu Jiaoliang <yujiaoliang@...o.com>
Subject: [PATCH v1] drivers:gt:Switch to use kmemdup_array()

Let the kememdup_array() take care about multiplication and possible
overflows.
Signed-off-by: Yu Jiaoliang <yujiaoliang@...o.com>
---
 drivers/gpu/drm/i915/gt/intel_workarounds.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index 09a287c1aedd..d90348c56765 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -111,8 +111,8 @@ static void wa_init_finish(struct i915_wa_list *wal)
 {
 	/* Trim unused entries. */
 	if (!IS_ALIGNED(wal->count, WA_LIST_CHUNK)) {
-		struct i915_wa *list = kmemdup(wal->list,
-					       wal->count * sizeof(*list),
+		struct i915_wa *list = kmemdup_array(wal->list,
+					       wal->count, sizeof(*list),
 					       GFP_KERNEL);
 
 		if (list) {
-- 
2.34.1