From patchwork Tue Oct 27 12:17:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 68346 Received: from vger.kernel.org ([23.128.96.18]) by www.linuxtv.org with esmtp (Exim 4.92) (envelope-from ) id 1kXNv6-002aqH-9D; Tue, 27 Oct 2020 12:17:47 +0000 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2411635AbgJ0MRk (ORCPT + 1 other); Tue, 27 Oct 2020 08:17:40 -0400 Received: from mail-wm1-f68.google.com ([209.85.128.68]:52536 "EHLO mail-wm1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2411699AbgJ0MRj (ORCPT ); Tue, 27 Oct 2020 08:17:39 -0400 Received: by mail-wm1-f68.google.com with SMTP id c194so1163599wme.2 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=cwewDGPfM1YM5O2428Kk63GfoqWKu5SgJsjBcieMm1crr9EY3F9Ec9eUd3X679KEHc iL9yYUhaCGHRUPnAX060Bq4fE4u/PAqB/JRX+vZLlOeq97T4TPviBvhCFn5IW15ke1K/ U0JLvZy+8Jy36jcq5XiYlQ8Kp2lKTMwYz2A8KqjSuMCHA0fxYpjuAKWP+YRQ1st6Z3Xo pKBmSHq1aC5QVtXiiTSlF7m+Ni86tXgk2gt0VFVcYJdiElQfRUq4eZQelz2s71D/kc9b FtdQmO2sGS0bLAn/zbXc7QPQnPgfjEM5cMwseSQTBxvtspdeKz7mgnAp1ZLBO4mIzVNM 2t5Q== X-Gm-Message-State: AOAM532448gjNOfM4vZ9WfxZZUrqJfbvdqR8YswyKA2jR1a0Z0yaJ/Ve BbXw6sZ7GukI7P947U89jRY24w== 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_K=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 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-LSpam-Score: -2.4 (--) X-LSpam-Report: No, score=-2.4 required=5.0 tests=BAYES_00=-1.9,DKIM_SIGNED=0.1,DKIM_VALID=-0.1,HEADER_FROM_DIFFERENT_DOMAINS=0.5,MAILING_LIST_MULTI=-1 autolearn=ham autolearn_force=no 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(-) Acked-by: Linus Walleij