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: 11862567 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=-6.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,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 B6C4DC56202 for ; Wed, 28 Oct 2020 08:07:58 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 43C1C20724 for ; Wed, 28 Oct 2020 08:07:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=bgdev-pl.20150623.gappssmtp.com header.i=@bgdev-pl.20150623.gappssmtp.com header.b="P+3tCIHO" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 43C1C20724 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bgdev.pl Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 258336EC5B; Wed, 28 Oct 2020 08:07:38 +0000 (UTC) Received: from mail-wm1-x342.google.com (mail-wm1-x342.google.com [IPv6:2a00:1450:4864:20::342]) by gabe.freedesktop.org (Postfix) with ESMTPS id F23DF6EB6E for ; Tue, 27 Oct 2020 12:17:37 +0000 (UTC) Received: by mail-wm1-x342.google.com with SMTP id l15so1203251wmi.3 for ; Tue, 27 Oct 2020 05:17:37 -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=eUZfF7XRIxjyVXauZ7mrQpP3Hb796QpdmQdMHd/Pu7962i2qRWKdJjd9lVbMg8ds++ sfY84OcWjOtEzk2aboVbKzIV+7XGbF7pN1qIC77x9NJwRXCkZXJQYKXrqUhLNdtrUZxX tQokFgW7An4Ny/hhoATvlfTKdSsOIuqLT9BO6zkurnE6el347aYRXuLDNM90AYdcdmeH hkXFQMfT5oV5d43rJSYKWswsKq4C3PSBopDevK6XqCm+vTw7mWPfgxxsktxCyARa0X7z qqWSwzeSwcU8h3RXxAeQAmFjsat9UNw+RDsD79k0wO+vbrLiMZ92jq6WQB1TRsvw6At4 aHRQ== X-Gm-Message-State: AOAM532jaIruLAxj3mv/Ir7iwNpS+8vCdjeiQEREGOmZPTq4jcY+m0su p95usvcQIYDN273hW2QlCm4NPQ== 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 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 X-Mailman-Approved-At: Wed, 28 Oct 2020 08:06:31 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alsa-devel@alsa-project.org, kvm@vger.kernel.org, linux-mm@kvack.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, virtualization@lists.linux-foundation.org, linaro-mm-sig@lists.linaro.org, linux-gpio@vger.kernel.org, Bartosz Golaszewski , linux-media@vger.kernel.org, linux-edac@vger.kernel.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" 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