From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4BE8274068 for ; Thu, 21 Nov 2024 13:58:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.10 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732197521; cv=none; b=s2anwWuWdojTW7JOxDlwzD/jkeEZ8qmrfOaFVlR/ndi/fGsPqIVAXPPMYUpLNFPQ5r8bP2j3AGnX2izjpdZTErH0j16mhrzkLMsFZZbfODHulVnX6pl7X6lSNUKadPkb0nW+TMOabG9xiukRC474rrVyTgihVIZURRbxxVSGAdI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732197521; c=relaxed/simple; bh=1XDV6Qj7eyNs2FZm81waRioZ1tN6Wz3fQrqKYvnRq3s=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=mrXFFgdvBbM9tv1kT77+1w9o/iShKGAjh2FQKBFui4O9kjoZ8wuhS9vcdbr4fjqtlhW8WyV9p7mrYhJiBNSYpTbhthITMR0f21f45ziSH8pMmHnjLmZW89UtNqlyxZUNW/DtCPTWzfgVA0mMIzG5HgTIiSFKS6vfkhJiOjFlGCU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=CKiP7tqS; arc=none smtp.client-ip=198.175.65.10 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="CKiP7tqS" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1732197519; x=1763733519; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=1XDV6Qj7eyNs2FZm81waRioZ1tN6Wz3fQrqKYvnRq3s=; b=CKiP7tqSUAuzirssJ0JhRw2BZ5XOFkIk+S0RpVC1DcZxymm4a69Z+Woz Ggb/q0Mv+qdeHCSRnaLKlTxGYu6+OvKdrkF2zHMGOn8dh6i9UTtPPym38 sD3NivjdhIp5wGDB4nzYj3h0GuDQu7xzaZD7rzna2b6TUwxR7gJDZGWry J88vk7GK+1tTfcwgMUDmaiNg/oQxEaGXEAFxZ7BCF0Yg2C2FSPnttqSqj U+c8y8Rj2C9LzNBfe5J2SabAb+FmQ3ToJfn4ZJVDudl9q9eH4Klq/OZIy 57QMIYtImUAoeHaMkHA0j8q2UEtR59TV8n3wpBXZ+6tooDFI7rJIl8B0s w==; X-CSE-ConnectionGUID: pG0UI7BfQVy5uSOxpfCHiA== X-CSE-MsgGUID: /JN0+EbiQjin3jIUrJq5tw== X-IronPort-AV: E=McAfee;i="6700,10204,11263"; a="49732496" X-IronPort-AV: E=Sophos;i="6.12,172,1728975600"; d="scan'208";a="49732496" Received: from fmviesa005.fm.intel.com ([10.60.135.145]) by orvoesa102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Nov 2024 05:58:39 -0800 X-CSE-ConnectionGUID: wpAzhqApSWqWuZlm0e00gw== X-CSE-MsgGUID: 8Ul0LmMCSC6tv0pPYeQs9Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,172,1728975600"; d="scan'208";a="94706865" Received: from black.fi.intel.com ([10.237.72.28]) by fmviesa005.fm.intel.com with ESMTP; 21 Nov 2024 05:58:37 -0800 Received: by black.fi.intel.com (Postfix, from userid 1003) id 1E9ED2CA; Thu, 21 Nov 2024 15:58:36 +0200 (EET) From: Andy Shevchenko To: Andy Shevchenko , kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org Cc: Marco Elver , Dmitry Vyukov Subject: [PATCH v1 1/1] kcsan: debugfs: Use krealloc_array() to replace krealloc() Date: Thu, 21 Nov 2024 15:58:34 +0200 Message-ID: <20241121135834.103015-1-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.43.0.rc1.1336.g36b5255a03ac Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Use krealloc_array() to replace krealloc() with multiplication. krealloc_array() has multiply overflow check, which will be safer. Signed-off-by: Andy Shevchenko --- kernel/kcsan/debugfs.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/kernel/kcsan/debugfs.c b/kernel/kcsan/debugfs.c index 53b21ae30e00..be7051d0e7f4 100644 --- a/kernel/kcsan/debugfs.c +++ b/kernel/kcsan/debugfs.c @@ -166,10 +166,10 @@ static ssize_t insert_report_filterlist(const char *func) } else if (report_filterlist.used == report_filterlist.size) { /* resize filterlist */ size_t new_size = report_filterlist.size * 2; - unsigned long *new_addrs = - krealloc(report_filterlist.addrs, - new_size * sizeof(unsigned long), GFP_ATOMIC); + unsigned long *new_addrs; + new_addrs = krealloc_array(report_filterlist.addrs, + new_size, sizeof(*new_addrs), GFP_ATOMIC); if (new_addrs == NULL) { /* leave filterlist itself untouched */ ret = -ENOMEM; -- 2.43.0.rc1.1336.g36b5255a03ac