From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9867DC55179 for ; Tue, 27 Oct 2020 12:17:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4022B22283 for ; Tue, 27 Oct 2020 12:17:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=bgdev-pl.20150623.gappssmtp.com header.i=@bgdev-pl.20150623.gappssmtp.com header.b="P+3tCIHO" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2411699AbgJ0MRk (ORCPT ); Tue, 27 Oct 2020 08:17:40 -0400 Received: from mail-wm1-f66.google.com ([209.85.128.66]:53797 "EHLO mail-wm1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2411693AbgJ0MRi (ORCPT ); Tue, 27 Oct 2020 08:17:38 -0400 Received: by mail-wm1-f66.google.com with SMTP id d78so1165736wmd.3 for ; Tue, 27 Oct 2020 05:17:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=LJP6zUa9eBmdV8bx1jdaWyKmaK9MsWkK16il5Qo0OrM=; b=P+3tCIHOjCZAx0wmilW2GDFvIGyFUKkJ6kMCnuzTaqTK/WVy0FTiGFvqMSEeEaTSDi lidtNcACGQa4FsZTJSv/WM+PJAWcMBZ84eqrsFS5cBt5SmJFi36Zt8P8jQqLDmjkvqeW khRH3E+peGeaQTCIY3Vt2p8gYCX0QOu5toB/kJmHKtw/28SJ6BKumTSSq2MJytdIAdgp oJxR5uAJUIN5EhwIO49GT3ZmC5B5ob3NU85YWSk0gy8yt2me9ot389ODzNeNzE1g7isf BjKSBXgUK2OMn2MduiDvTrDfwsn8XX/eMtY9lahl6HLlIYN8j7wdAJNYVoPtfuaoSs+h PRUQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=LJP6zUa9eBmdV8bx1jdaWyKmaK9MsWkK16il5Qo0OrM=; b=QgBTe82akNms5MVskxGYmIbSuHYDi33+8blwLFlNBM+CkMMiTkXZ0dox7TC5SYIJ4w Qlt9VNW7Itl8DnxcxVvzI0Yoh/ImEcnf2xT3/xqtqb/6dEbBAC+a5x9itYXNKhKbl7bL AK/Jz174d808bxRNcrKWYtRmhb8rSQebQCe/cN4MVCbHVyUMNHexBBi9M7DtB/k7B+U7 /b707YHi0qJ2zaFsDXsqLxhBNUYxgznbcYlnqMPUU1P8Ud/GoZYbDCIG1Lvpgs6UFxRj 5F84rgoXFNVGaVm3RXDlo1eJlcTEORw+whrZ5B1NF1WmyMWfRzPAZ/PJyoRu5JQov1Aq qXmw== X-Gm-Message-State: AOAM531gjV81k+PwnY/o4yX77bvFpC2EcyAIPNrE7nelAPP/cqfXxHCb sSZ3qcpbFrNI4vrO47SEY4HD/g== X-Google-Smtp-Source: ABdhPJxUDPfM7/G4w39/lM3kfVBbiG37Et7vUzW73qIzYGjUaK5vAjNfvCioGZotPrXrgX+P7fvBjA== X-Received: by 2002:a1c:8087:: with SMTP id b129mr2477389wmd.10.1603801056147; Tue, 27 Oct 2020 05:17:36 -0700 (PDT) Received: from debian-brgl.home (amarseille-656-1-4-167.w90-8.abo.wanadoo.fr. [90.8.158.167]) by smtp.gmail.com with ESMTPSA id a2sm1731908wrs.55.2020.10.27.05.17.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 27 Oct 2020 05:17:35 -0700 (PDT) From: Bartosz Golaszewski To: Andy Shevchenko , Sumit Semwal , Gustavo Padovan , =?UTF-8?q?Christian=20K=C3=B6nig?= , Mauro Carvalho Chehab , Borislav Petkov , Tony Luck , James Morse , Robert Richter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Alexander Shishkin , Linus Walleij , "Michael S . Tsirkin" , Jason Wang , Christoph Lameter , Pekka Enberg , David Rientjes , Joonsoo Kim , Andrew Morton , Jaroslav Kysela , Takashi Iwai Cc: linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-kernel@vger.kernel.org, linux-edac@vger.kernel.org, linux-gpio@vger.kernel.org, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, linux-mm@kvack.org, alsa-devel@alsa-project.org, Bartosz Golaszewski Subject: [PATCH 0/8] slab: provide and use krealloc_array() Date: Tue, 27 Oct 2020 13:17:17 +0100 Message-Id: <20201027121725.24660-1-brgl@bgdev.pl> X-Mailer: git-send-email 2.29.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Bartosz Golaszewski Andy brought to my attention the fact that users allocating an array of equally sized elements should check if the size multiplication doesn't overflow. This is why we have helpers like kmalloc_array(). However we don't have krealloc_array() equivalent and there are many users who do their own multiplication when calling krealloc() for arrays. This series provides krealloc_array() and uses it in a couple places. A separate series will follow adding devm_krealloc_array() which is needed in the xilinx adc driver. Bartosz Golaszewski (8): mm: slab: provide krealloc_array() ALSA: pcm: use krealloc_array() vhost: vringh: use krealloc_array() pinctrl: use krealloc_array() edac: ghes: use krealloc_array() drm: atomic: use krealloc_array() hwtracing: intel: use krealloc_array() dma-buf: use krealloc_array() drivers/dma-buf/sync_file.c | 4 ++-- drivers/edac/ghes_edac.c | 4 ++-- drivers/gpu/drm/drm_atomic.c | 3 ++- drivers/hwtracing/intel_th/msu.c | 2 +- drivers/pinctrl/pinctrl-utils.c | 2 +- drivers/vhost/vringh.c | 3 ++- include/linux/slab.h | 11 +++++++++++ sound/core/pcm_lib.c | 4 ++-- 8 files changed, 23 insertions(+), 10 deletions(-) -- 2.29.1