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Tue, 23 Sep 2025 01:53:02 -0700 (PDT) Received: from bhk.router ([102.170.50.198]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-46d1f3e1b03sm81136945e9.23.2025.09.23.01.53.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 23 Sep 2025 01:53:02 -0700 (PDT) From: Mehdi Ben Hadj Khelifa To: maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch, mingo@kernel.org, tglx@linutronix.de, mehdi.benhadjkhelifa@gmail.com, jfalempe@redhat.com, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-kernel-mentees@lists.linuxfoundation.org, skhan@linuxfoundation.org, david.hunter.linux@gmail.com, rubenru09@aol.com Subject: [PATCH v2] drm/gud: Use kmalloc_array() instead of kmalloc() Date: Tue, 23 Sep 2025 09:51:44 +0100 Message-ID: <20250923085144.22582-1-mehdi.benhadjkhelifa@gmail.com> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Replace kmalloc with kmalloc array in drm/gud/gud_pipe.c since the calculation inside kmalloc is dynamic 'width * height' to avoid overflow. Signed-off-by: Mehdi Ben Hadj Khelifa --- Changelog: Changes since v1: - Use of width as element count and height as size of element to eliminate the mentionned calculation and overflow issues. drivers/gpu/drm/gud/gud_pipe.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/gud/gud_pipe.c b/drivers/gpu/drm/gud/gud_pipe.c index 8d548d08f127..8898dc9393fb 100644 --- a/drivers/gpu/drm/gud/gud_pipe.c +++ b/drivers/gpu/drm/gud/gud_pipe.c @@ -70,7 +70,7 @@ static size_t gud_xrgb8888_to_r124(u8 *dst, const struct = drm_format_info *format height =3D drm_rect_height(rect); len =3D drm_format_info_min_pitch(format, 0, width) * height; =20 - buf =3D kmalloc(width * height, GFP_KERNEL); + buf =3D kmalloc_array(width, height, GFP_KERNEL); if (!buf) return 0; =20 --=20 2.51.0