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Tue, 01 Sep 2026 00:47:06 -0700 (PDT) Received: from i386.168.1.127 ([2402:a00:163:2ce9:6882:91b7:8e79:7958]) by smtp.gmail.com with ESMTPSA id 956f58d0204a3-66e4ed2c78esm7782602d50.19.2026.09.01.00.47.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 01 Sep 2026 00:47:06 -0700 (PDT) From: Hrushiraj Gandhi To: sakari.ailus@linux.intel.com, mchehab@kernel.org, gregkh@linuxfoundation.org Cc: linux-media@vger.kernel.org, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org, Hrushiraj Gandhi Subject: [PATCH] media: staging: ipu3: use vcalloc() instead of vzalloc() with multiply Date: Tue, 1 Sep 2026 13:16:57 +0530 Message-ID: <20260901074657.536299-1-hrushirajg23@gmail.com> X-Mailer: git-send-email 2.47.3 Precedence: bulk X-Mailing-List: linux-staging@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit mmu->l2pts is sized as IPU3_PT_PTES * sizeof(*mmu->l2pts) by hand. Use vcalloc() instead, which computes the size via the overflow-checked size_mul() so a large enough count fails the allocation cleanly instead of silently wrapping size_t into a too-small buffer. No functional change. Signed-off-by: Hrushiraj Gandhi --- drivers/staging/media/ipu3/ipu3-mmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/media/ipu3/ipu3-mmu.c b/drivers/staging/media/ipu3/ipu3-mmu.c index b196a5815903..ab40502c06b8 100644 --- a/drivers/staging/media/ipu3/ipu3-mmu.c +++ b/drivers/staging/media/ipu3/ipu3-mmu.c @@ -464,7 +464,7 @@ struct imgu_mmu_info *imgu_mmu_init(struct device *parent, void __iomem *base) * Allocate the array of L2PT CPU pointers, initialized to zero, * which means the dummy L2PT allocated above. */ - mmu->l2pts = vzalloc(IPU3_PT_PTES * sizeof(*mmu->l2pts)); + mmu->l2pts = vcalloc(IPU3_PT_PTES, sizeof(*mmu->l2pts)); if (!mmu->l2pts) goto fail_l2pt;