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([157.50.91.136]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-339b4ea3c3dsm1008832a91.5.2025.10.01.18.33.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 01 Oct 2025 18:33:21 -0700 (PDT) From: Bhanu Seshu Kumar Valluri To: avier Martinez Canillas , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-kernel-mentees@lists.linuxfoundation.org, skhan@linuxfoundation.org, david.hunter.linux@gmail.com, khalid@kernel.org, Bhanu Seshu Kumar Valluri Subject: [PATCH] drm/ssd130x: Use kmalloc_array to prevent overflow of dynamic size calculation Date: Thu, 2 Oct 2025 07:03:12 +0530 Message-Id: <20251002013312.67015-1-bhanuseshukumar@gmail.com> X-Mailer: git-send-email 2.34.1 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" Use kmalloc_array to avoid potential overflow during dynamic size calculati= on inside kmalloc. Signed-off-by: Bhanu Seshu Kumar Valluri --- Note: Patch compiled successfully. No functionality change is intended. drivers/gpu/drm/solomon/ssd130x.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/solomon/ssd130x.c b/drivers/gpu/drm/solomon/ss= d130x.c index eec43d1a5595..8368f0ffbe1e 100644 --- a/drivers/gpu/drm/solomon/ssd130x.c +++ b/drivers/gpu/drm/solomon/ssd130x.c @@ -1498,7 +1498,7 @@ static int ssd130x_crtc_atomic_check(struct drm_crtc = *crtc, if (ret) return ret; =20 - ssd130x_state->data_array =3D kmalloc(ssd130x->width * pages, GFP_KERNEL); + ssd130x_state->data_array =3D kmalloc_array(ssd130x->width, pages, GFP_KE= RNEL); if (!ssd130x_state->data_array) return -ENOMEM; =20 @@ -1519,7 +1519,7 @@ static int ssd132x_crtc_atomic_check(struct drm_crtc = *crtc, if (ret) return ret; =20 - ssd130x_state->data_array =3D kmalloc(columns * ssd130x->height, GFP_KERN= EL); + ssd130x_state->data_array =3D kmalloc_array(columns, ssd130x->height, GFP= _KERNEL); if (!ssd130x_state->data_array) return -ENOMEM; =20 @@ -1546,7 +1546,7 @@ static int ssd133x_crtc_atomic_check(struct drm_crtc = *crtc, =20 pitch =3D drm_format_info_min_pitch(fi, 0, ssd130x->width); =20 - ssd130x_state->data_array =3D kmalloc(pitch * ssd130x->height, GFP_KERNEL= ); + ssd130x_state->data_array =3D kmalloc_array(pitch, ssd130x->height, GFP_K= ERNEL); if (!ssd130x_state->data_array) return -ENOMEM; =20 --=20 2.34.1