From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yx1-f42.google.com (mail-yx1-f42.google.com [74.125.224.42]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2274036212C for ; Tue, 1 Sep 2026 07:47:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.224.42 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788248829; cv=none; b=b0pXXXc3k+QCLEuZ4aLGL4XrxmD8376R47a/1Oz4Qdu+QJLSipB3Geg0W18Sslxih6QGb/CsHpqX1piwCWAD7gJgzIIm1JVFR7epY/XF0Q+8CQBcX3+TzEGVSy+wYJEz6/OW++PdPwl2t3uX7WMnKNW3HP2Lf6PqRP8wPAFcFYE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788248829; c=relaxed/simple; bh=A9qVgctfJKa3lOPN/djwn5FdaMAcXZJbQwr/BkRW6fU=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=ckaV5K0j3MvpzbEU6ik45c7LUnf114ZbEhkdDIhO369Qyt1OWoiy71EkVKIWINVX04dWXSPYvTwjNwyAP4JVEtplNHYNzLuz1bONjOLZzsEdu74Uhuw+IDN/60l9hTEjdHKzJ3AUxx9a7si72MWL6ROhV1Yb1WhZYueB+8Apaso= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=TkFYGgII; arc=none smtp.client-ip=74.125.224.42 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="TkFYGgII" Received: by mail-yx1-f42.google.com with SMTP id 956f58d0204a3-66e3d262d43so1686946d50.2 for ; Tue, 01 Sep 2026 00:47:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1788248827; x=1788853627; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to:content-type; bh=ypWFkePANEp5wn6tG7VIKIBXZfw/6XX/4Y0Ddb9zlHA=; b=TkFYGgIIOuQ+ncJ36gqZNhdePJAl74b4c8epXXQMRj5dNHCV0ntsvvPY5dG4E14H93 ZJdiJUX/In4gUpSaiyUu9R+rM6QZtM7i/u1gOefywwvl8743M4w/afTz6KP4oCnmiRBW zJD4KMZhTFXGlvq69bOxblzpYLdWNsFJuqMbiWOoU+9wDX4WtwLrPPLIIagvTayoYNkD WIK0QYVRO6lkNPJoRWxW7R7crnNNK02neAqeaZBDlwTiB3BgB7Xn0BCqgbAS4NhFUGfv hQA5EbVE3YPTypiBsvH88gfwpx6HFUFqDSC761ZLr1xGwo2rz6UeTfAAAwyHs4YJUC9V pEVA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1788248827; x=1788853627; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=ypWFkePANEp5wn6tG7VIKIBXZfw/6XX/4Y0Ddb9zlHA=; b=TZKcAmwvkr5B6umcb7Sg6iZBtKnUndrCVo/Uqdpgx6xl/fvVvYYBXD8e8yALf0wJUe TiToftPd+/pYa8xMg39U4HKaQX6xg8fpTpSv3tbyGEF/EXgj1xR19GifT31bflKcu68F hWjDvglhUl8Kct0fWO4EytkSEcRLT0b+TBmrdxtqtY1uiBYcj6+mCF7BLKtxoIk7sd9W gEkMh8uDFqBMykQ5NqRvLSDZ3tYDpAsllcBv9fwafMbZfTtYXIOgGQnuMo6qRr//Opyr clH61DLCtaTLqoPuTWhH35L7O30grLxrvJCX47uFkhhxTVsUJP+iteLq7Ldh/liNEQ4c oPhw== X-Gm-Message-State: AFuF++naCQ3O66E1xCA9v4GrQEhiw+gnYJ3CIWDXWL+Z/d2rVsLMDU7o 28h0h7CcBpLurvwv8p3C3iczmpRJ83S4Z4IfUACV96ijPOh1wGfXFAkW X-Gm-Gg: AYBFou3qvCapfSifPaq5bu0rlc5/33inVQzwFk7s6zDx7iTKRjWmsoKamNr26vaKLAC WOPh9xgQVpOH0+Bh/XZJQKzngGou+Nf3r4tSmg1ptdrwbwAkII6zNw78XOhLRxnni5TSM48902b VhgJdlS2T3LR7nVCy1Ba8lczd3RLSEgzeP2Ow+fpqQTyGVsp5X+FbPaQsOLvC7MYkjuzVGtCpg2 56JidfzkmyHyp1Fl370+VbOePZzEDS+E5u2LaRLxH6ioGN65A6lHHwNeLJhA5DemSlKQ+bMu8Nk 5EgLkiSipItvz85PJrinHrzAIzouV6fQuc2RgBzxN+SjYyAFISHxKGPP9H5PkoKmcWBtG9W/JgL 1pnAeo+dZ1dR2qGWr1pPUQfnxSiG+qrJGfBdb9zTggNmnV181wxNKHEAWFA3i6ccYOysPCj0XBB XSGpYpGvIQB7FkayBaaJKvS2x9PrcB59XvMv4njisQIJ6So+9re1rNSmJvatpXyE2YjRGD X-Received: by 2002:a53:ebcd:0:b0:667:cbb1:5f1b with SMTP id 956f58d0204a3-66f8745bd95mr1811244d50.6.1788248826877; 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-media@vger.kernel.org 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;