From patchwork Mon Nov 9 11:06:46 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 1396673 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=bgdev.pl Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=bgdev-pl.20150623.gappssmtp.com header.i=@bgdev-pl.20150623.gappssmtp.com header.a=rsa-sha256 header.s=20150623 header.b=SLmwWdYm; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4CV7Vg1Gc9z9sSf for ; Mon, 9 Nov 2020 22:07:06 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729542AbgKILHF (ORCPT ); Mon, 9 Nov 2020 06:07:05 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59494 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729510AbgKILHC (ORCPT ); Mon, 9 Nov 2020 06:07:02 -0500 Received: from mail-wr1-x443.google.com (mail-wr1-x443.google.com [IPv6:2a00:1450:4864:20::443]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 72AA1C0613D4 for ; Mon, 9 Nov 2020 03:07:02 -0800 (PST) Received: by mail-wr1-x443.google.com with SMTP id p8so7416318wrx.5 for ; Mon, 09 Nov 2020 03:07:02 -0800 (PST) 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:in-reply-to:references :mime-version:content-transfer-encoding; bh=2uLK4LNo7fJGEwA0NXfYaAQzvkTW8/WkGHuVu61FcZ4=; b=SLmwWdYmA2Su0OyL+219YDZzeVXOkzpy5gortE6aVnwng+6cHrJzhAQJzNByqcPbPZ isbE6V3Lb9JgstbUlm/PZvCpNxelIDnwHLTINtWIzMAUAJP+6YLk/AWf+cW33RVJOvLq 4EQlOOLu8zd+gVrxvr0w9485FxLsZ4uiV1jlwgDMS4E7kDkszYjvid4w0z806pFvA1dO U+nHioEgRrLmfLyR8tH/H/Ge3+qH76H09ubPywZEg/u4KcGzZ6YzgnyKXZKxxyWIo1cW FT3Tuwvxb43JhyG0QmKnG/8uRrjp2S/bO4jEisldpzuA8EOA5eJuEswwYg/l6KV0K70j EAjQ== 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:in-reply-to :references:mime-version:content-transfer-encoding; bh=2uLK4LNo7fJGEwA0NXfYaAQzvkTW8/WkGHuVu61FcZ4=; b=F7nG4lYE2tRgCMo78hRYYY+2+hbl8FECEXSW0wgjPRd1zcRzJscVGGBqSr01XEona6 pnamBeHiBhYDCljQC8Dn79H3sY3PQQON/fvelyFy5afAi8YVzm17t4dMnNbqsEt/YhOC 7sg5v1UTniGLt/I2pLeIXmFkLjL85whvo7M0lwakM3+A7XwBKeQw3ejt3Vnll+vcDsD4 QQji1J90bQyPY7c7iC//Agn1eWosp/KB27fHySw16NXNNXQHmSewD9InPgpQPFyfVCWE AP7iziVZVE7jX66nO5cOoz1PbU8Hyhr5xjFPKWOtNF6ZMu/2Tck3GP3i5f6FJzWqaPQK V5dg== X-Gm-Message-State: AOAM530LdMSihpxnjB0+uA1KU1Z7L+iECCfjzvmQYtGldxV+OGNFY3/Q ABv6mp6Szc1GmsPYtudFNxcrkg== X-Google-Smtp-Source: ABdhPJwC1VmwvlzIaWje0LLMyGfNJlg7DPW07nQhl2YWyOW+KS6oIpzkSUqvI/A14QOWWdg2F+P+tA== X-Received: by 2002:adf:9b98:: with SMTP id d24mr16961027wrc.17.1604920021208; Mon, 09 Nov 2020 03:07:01 -0800 (PST) Received: from localhost.localdomain (lfbn-nic-1-190-206.w2-15.abo.wanadoo.fr. [2.15.39.206]) by smtp.gmail.com with ESMTPSA id d3sm12815582wre.91.2020.11.09.03.06.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Nov 2020 03:07:00 -0800 (PST) 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 v3 1/9] mm: slab: clarify krealloc()'s behavior with __GFP_ZERO Date: Mon, 9 Nov 2020 12:06:46 +0100 Message-Id: <20201109110654.12547-2-brgl@bgdev.pl> X-Mailer: git-send-email 2.29.1 In-Reply-To: <20201109110654.12547-1-brgl@bgdev.pl> References: <20201109110654.12547-1-brgl@bgdev.pl> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Bartosz Golaszewski __GFP_ZERO is ignored by krealloc() (unless we fall-back to kmalloc() path, in which case it's honored). Point that out in the kerneldoc. Signed-off-by: Bartosz Golaszewski --- mm/slab_common.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/mm/slab_common.c b/mm/slab_common.c index f9ccd5dc13f3..d6df73f79204 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c @@ -1091,9 +1091,9 @@ static __always_inline void *__do_krealloc(const void *p, size_t new_size, * @flags: the type of memory to allocate. * * The contents of the object pointed to are preserved up to the - * lesser of the new and old sizes. If @p is %NULL, krealloc() - * behaves exactly like kmalloc(). If @new_size is 0 and @p is not a - * %NULL pointer, the object pointed to is freed. + * lesser of the new and old sizes (__GFP_ZERO flag is effectively ignored). + * If @p is %NULL, krealloc() behaves exactly like kmalloc(). If @new_size + * is 0 and @p is not a %NULL pointer, the object pointed to is freed. * * Return: pointer to the allocated memory or %NULL in case of error */ From patchwork Mon Nov 9 11:06:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 1396674 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=bgdev.pl Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=bgdev-pl.20150623.gappssmtp.com header.i=@bgdev-pl.20150623.gappssmtp.com header.a=rsa-sha256 header.s=20150623 header.b=aox5vh8y; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4CV7Vn30jkz9sVH for ; Mon, 9 Nov 2020 22:07:13 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729511AbgKILHI (ORCPT ); Mon, 9 Nov 2020 06:07:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59510 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729515AbgKILHE (ORCPT ); Mon, 9 Nov 2020 06:07:04 -0500 Received: from mail-wr1-x441.google.com (mail-wr1-x441.google.com [IPv6:2a00:1450:4864:20::441]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 28A36C0613D3 for ; Mon, 9 Nov 2020 03:07:04 -0800 (PST) Received: by mail-wr1-x441.google.com with SMTP id p8so7416408wrx.5 for ; Mon, 09 Nov 2020 03:07:04 -0800 (PST) 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:in-reply-to:references :mime-version:content-transfer-encoding; bh=X2Rt2FzEDhfwvo5anIXOq/hUQeEl4/lxGNeKa+o6J0w=; b=aox5vh8ytYutbWVc26/liVn7Z8hEPu2nlIMQId7oA48asO+6m3jeTPz78Xi5tKvZ5M bwqHNNDNK70TD0NuDOZApqzQQQIxd7lpVAV+s12r5UTEgNsP0LLtTP/8WwzPWY/N5W3F Npda/QnMuuCjfODUnOM6c1KUKnZ4sERDBgsxwJiNxobq6BnhL/yQBZO223GeqTICPw9m vPcqcg/xsiMtQw2qzDEvFh+x8itNf6+A8g+1ljb0/aVhzJkxBCaUC9gPqB0T/1iCSeAD Up5ueADAnhN5fgjIVO2va7mHiOxvK3gevDqJSukErF5i8yrzIC+ShGo5F2g2sSe+Tv4s iVVA== 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:in-reply-to :references:mime-version:content-transfer-encoding; bh=X2Rt2FzEDhfwvo5anIXOq/hUQeEl4/lxGNeKa+o6J0w=; b=aOH89vWuIxfDPgGYuFMkDpvgXEqmJXY6K5/HzXWyWTJQRYFKpMvUXR08WF3qlatDT9 kzkkTOVTK2F8su3HbO7QoZ2BMfeC1Hi2U7ps/OquVxhCjkxeZTeER1TUDDOhiZz999qV NF5cRQwNG/kMq5Vv1/JWn0vdbyDdYeTPteyQREHal4pEwHL7+DDxu2n+LPD3aVeMw+yq x0syozfcpaCoWWqsKpH9hg1NDWLT2AYum7U2louWz9InQdzGlDXyfLQL8TqsPtgUwTT/ c9WHnHs1yVgbPOrE9lYKRQ/UwvBEJZXycGMRXPlMysLalCbFg0qRLqU/fDYy4NOSM13z VvJw== X-Gm-Message-State: AOAM530By0wFA70ttLD0UYx65zfLuckIWBVZsDc8ToOc57ruPDaNXF2I IXi1PERo/22u24ygW/p45oC6eA== X-Google-Smtp-Source: ABdhPJz9QUvKGU969idAKC9U5b3ocmwgTjZ8J0vtC/TaPYMbRMpLHkJeyp4aCBCLAgcQ+m/LRxWMMA== X-Received: by 2002:adf:9066:: with SMTP id h93mr18252530wrh.166.1604920022928; Mon, 09 Nov 2020 03:07:02 -0800 (PST) Received: from localhost.localdomain (lfbn-nic-1-190-206.w2-15.abo.wanadoo.fr. [2.15.39.206]) by smtp.gmail.com with ESMTPSA id d3sm12815582wre.91.2020.11.09.03.07.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Nov 2020 03:07:02 -0800 (PST) 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 , Vlastimil Babka Subject: [PATCH v3 2/9] mm: slab: provide krealloc_array() Date: Mon, 9 Nov 2020 12:06:47 +0100 Message-Id: <20201109110654.12547-3-brgl@bgdev.pl> X-Mailer: git-send-email 2.29.1 In-Reply-To: <20201109110654.12547-1-brgl@bgdev.pl> References: <20201109110654.12547-1-brgl@bgdev.pl> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Bartosz Golaszewski When allocating an array of elements, users should check for multiplication overflow or preferably use one of the provided helpers like: kmalloc_array(). There's no krealloc_array() counterpart but there are many users who use regular krealloc() to reallocate arrays. Let's provide an actual krealloc_array() implementation. While at it: add some documentation regarding krealloc. Signed-off-by: Bartosz Golaszewski Acked-by: Vlastimil Babka --- Documentation/core-api/memory-allocation.rst | 4 ++++ include/linux/slab.h | 18 ++++++++++++++++++ 2 files changed, 22 insertions(+) diff --git a/Documentation/core-api/memory-allocation.rst b/Documentation/core-api/memory-allocation.rst index 4446a1ac36cc..5954ddf6ee13 100644 --- a/Documentation/core-api/memory-allocation.rst +++ b/Documentation/core-api/memory-allocation.rst @@ -147,6 +147,10 @@ The address of a chunk allocated with `kmalloc` is aligned to at least ARCH_KMALLOC_MINALIGN bytes. For sizes which are a power of two, the alignment is also guaranteed to be at least the respective size. +Chunks allocated with kmalloc() can be resized with krealloc(). Similarly +to kmalloc_array(): a helper for resizing arrays is provided in the form of +krealloc_array(). + For large allocations you can use vmalloc() and vzalloc(), or directly request pages from the page allocator. The memory allocated by `vmalloc` and related functions is not physically contiguous. diff --git a/include/linux/slab.h b/include/linux/slab.h index dd6897f62010..be4ba5867ac5 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -592,6 +592,24 @@ static inline void *kmalloc_array(size_t n, size_t size, gfp_t flags) return __kmalloc(bytes, flags); } +/** + * krealloc_array - reallocate memory for an array. + * @p: pointer to the memory chunk to reallocate + * @new_n: new number of elements to alloc + * @new_size: new size of a single member of the array + * @flags: the type of memory to allocate (see kmalloc) + */ +static __must_check inline void * +krealloc_array(void *p, size_t new_n, size_t new_size, gfp_t flags) +{ + size_t bytes; + + if (unlikely(check_mul_overflow(new_n, new_size, &bytes))) + return NULL; + + return krealloc(p, bytes, flags); +} + /** * kcalloc - allocate memory for an array. The memory is set to zero. * @n: number of elements. From patchwork Mon Nov 9 11:06:48 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 1396688 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=bgdev.pl Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=bgdev-pl.20150623.gappssmtp.com header.i=@bgdev-pl.20150623.gappssmtp.com header.a=rsa-sha256 header.s=20150623 header.b=bV0WOhcj; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4CV7X83qHgz9sSs for ; Mon, 9 Nov 2020 22:08:24 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729803AbgKILIX (ORCPT ); Mon, 9 Nov 2020 06:08:23 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59528 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729553AbgKILHG (ORCPT ); Mon, 9 Nov 2020 06:07:06 -0500 Received: from mail-wr1-x442.google.com (mail-wr1-x442.google.com [IPv6:2a00:1450:4864:20::442]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EDBB8C0613D6 for ; Mon, 9 Nov 2020 03:07:05 -0800 (PST) Received: by mail-wr1-x442.google.com with SMTP id j7so968280wrp.3 for ; Mon, 09 Nov 2020 03:07:05 -0800 (PST) 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:in-reply-to:references :mime-version:content-transfer-encoding; bh=1txfIvaUE40Ou/j75EYKcgw6u17F5C6+DdlKPQ0ay3M=; b=bV0WOhcjc6Y2rIR+7HT+QGO/LnwlTLaGqiH/bueGYgN1eqaiyqgBu630Wi1/Fe4Izr My6WbzMB2G0+0Jww/tXr7Bv9T9tCSh7nAf3FDc9HnmXqm0/SZK/yuCq88k07niiSIbdE Kni1bJikZg3lnovvS5+pSl6sF1scmJC1eailBHWvAIqLxr8aFY7ZvU8r5E11qXi2Th71 zhnarT2xZ1wCpMgNr9yCr/3M5lq5u3cCkFTpjL9pfSKNowIMNdFSn0mY3iQlibP5Tto4 Lgmzc95ZSUUq1X+Al8zvn1+ubttScKkHoe5x6HV2U03u2h9rIhdyiJw4IDWSPdJhmDMn +W6A== 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:in-reply-to :references:mime-version:content-transfer-encoding; bh=1txfIvaUE40Ou/j75EYKcgw6u17F5C6+DdlKPQ0ay3M=; b=h6P/RV9kU1sQdHVWt7893leJMmU3WNE2it7MptYvVLohUcIBBrU+O//MELA1ikEo9M wrKjrzSCQjQlht5aKs3KotogtmU1bwoZJwxqgHo4mbrdUo752fcQQIZaG8rIeWu4GAVw tfMCGpxpSNelN95S0iu9mdbdbAACVKKTePXqmUxdSCRILTbp6Hk14iqhKh3jJj8b8CVo 6cki2T4ntyDlkby5Rh0HhUbi1jjCeksDOphcJy7qyIlfQJJqhN0lFcXnUqonJF6ysVRC StrnQ69u/+PvI/+cxTU16JgUWTMg/DmBPUalPItP9wgTWno2Cye/1jb/53A2OIkFaPKe kcxg== X-Gm-Message-State: AOAM532MpsGwm6Uav7hOcjyR5Il6MDHAsFn2WlFJakdTeEegkLpvhca/ N/ym57cHiXgZzTtIlMulam8HZw== X-Google-Smtp-Source: ABdhPJzHXOuOWGraTd+tlh1Rh/Cikbums2QDN+ELEwiirpKRCwDTD+P/KjLkxHpoeG3VOPOYn45WFQ== X-Received: by 2002:adf:fd03:: with SMTP id e3mr11725240wrr.303.1604920024684; Mon, 09 Nov 2020 03:07:04 -0800 (PST) Received: from localhost.localdomain (lfbn-nic-1-190-206.w2-15.abo.wanadoo.fr. [2.15.39.206]) by smtp.gmail.com with ESMTPSA id d3sm12815582wre.91.2020.11.09.03.07.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Nov 2020 03:07:04 -0800 (PST) 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 , Takashi Iwai Subject: [PATCH v3 3/9] ALSA: pcm: use krealloc_array() Date: Mon, 9 Nov 2020 12:06:48 +0100 Message-Id: <20201109110654.12547-4-brgl@bgdev.pl> X-Mailer: git-send-email 2.29.1 In-Reply-To: <20201109110654.12547-1-brgl@bgdev.pl> References: <20201109110654.12547-1-brgl@bgdev.pl> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Bartosz Golaszewski Use the helper that checks for overflows internally instead of manually calculating the size of the new array. Signed-off-by: Bartosz Golaszewski Reviewed-by: Takashi Iwai --- sound/core/pcm_lib.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c index bda3514c7b2d..b7e3d8f44511 100644 --- a/sound/core/pcm_lib.c +++ b/sound/core/pcm_lib.c @@ -1129,8 +1129,8 @@ int snd_pcm_hw_rule_add(struct snd_pcm_runtime *runtime, unsigned int cond, if (constrs->rules_num >= constrs->rules_all) { struct snd_pcm_hw_rule *new; unsigned int new_rules = constrs->rules_all + 16; - new = krealloc(constrs->rules, new_rules * sizeof(*c), - GFP_KERNEL); + new = krealloc_array(constrs->rules, new_rules, + sizeof(*c), GFP_KERNEL); if (!new) { va_end(args); return -ENOMEM; From patchwork Mon Nov 9 11:06:49 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 1396685 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=bgdev.pl Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=bgdev-pl.20150623.gappssmtp.com header.i=@bgdev-pl.20150623.gappssmtp.com header.a=rsa-sha256 header.s=20150623 header.b=lrGFiV0J; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4CV7Wt4hgnz9sRK for ; Mon, 9 Nov 2020 22:08:10 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729802AbgKILIE (ORCPT ); Mon, 9 Nov 2020 06:08:04 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59558 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729592AbgKILHK (ORCPT ); Mon, 9 Nov 2020 06:07:10 -0500 Received: from mail-wr1-x441.google.com (mail-wr1-x441.google.com [IPv6:2a00:1450:4864:20::441]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A112CC061A4C for ; Mon, 9 Nov 2020 03:07:07 -0800 (PST) Received: by mail-wr1-x441.google.com with SMTP id c17so8204235wrc.11 for ; Mon, 09 Nov 2020 03:07:07 -0800 (PST) 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:in-reply-to:references :mime-version:content-transfer-encoding; bh=m2ikj+dhQ1Zeha09QctzFr3Pm7l2AwdyE1EcOPpxBQc=; b=lrGFiV0JEwMQZrmMw1exEx6p70DOim7QTqsGe9oOJfscxaaDbqtNd51mDY2gLrVO6e AJaVU6gEvJ5Rqj0pmzF+RQrIAx3UUypf5ocQh5+MxoPZ8v5DbPYgi+LUXOO0xXncPOxJ vazruXakD7raTY00eG7zaplUuhpuFOzAXeDC0+Go3Z91tS4RB4jYmtz+tumRzgHuHKVW Q3APL+KmLaN9niAGudHytA7iWz6ha072HjPWCU0qqHVWmvaciARBx8JEUQUEjIamSyMq CKw7PL+YgCXUcrNMDTeAPsCWzL8tuPTeq/pLQmlfpQnNOHY3qjMybpVo+6SdERNaMi03 sDgw== 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:in-reply-to :references:mime-version:content-transfer-encoding; bh=m2ikj+dhQ1Zeha09QctzFr3Pm7l2AwdyE1EcOPpxBQc=; b=AB8s101O1bEjOzDMBib83/87SaAtwOOS0W38jsNpe4IhNk6CRoR1tcCPyYcZOF5hZa J5LxMvm/EH4YNOxjv17ef9Xr5mVWMP0IK7BfA00X4NPzx4BSEpPdARCMWXHLKnBehHsb zWqzDejwoCWXtXUQGWvSt98BF2XQug83FzIS70MPzLuVtIjopPD9GOp0BqGG8sT8Xo4o Wb+N54U5i0pGxkUNSH3+QdNTif+wro7YfKGhHpXnL0UeYB+bLBoNNqXt1rUIPuTF9hT7 PXJgjw5IL0Z17I2JJ5v9O7BsLMNBXcv0xmPGQU67+dO/RrPncDfrMqexjUT+odHfpZIZ OSjg== X-Gm-Message-State: AOAM532xPb4M0CtjHkm88PFqNvueKpTPgYzJNadLqoTGxUadpPnsVdiS IIy0rWZ7dMz69/LXrLYwqw1i7g== X-Google-Smtp-Source: ABdhPJyDQDC3mJ8XBzXRPLr9tujc8yB1EaUC1zlVXx3gghE7oqzt7WatCScZ7dhRaCoAETe4X60pOw== X-Received: by 2002:a5d:54c5:: with SMTP id x5mr3869675wrv.297.1604920026445; Mon, 09 Nov 2020 03:07:06 -0800 (PST) Received: from localhost.localdomain (lfbn-nic-1-190-206.w2-15.abo.wanadoo.fr. [2.15.39.206]) by smtp.gmail.com with ESMTPSA id d3sm12815582wre.91.2020.11.09.03.07.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Nov 2020 03:07:05 -0800 (PST) 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 v3 4/9] vhost: vringh: use krealloc_array() Date: Mon, 9 Nov 2020 12:06:49 +0100 Message-Id: <20201109110654.12547-5-brgl@bgdev.pl> X-Mailer: git-send-email 2.29.1 In-Reply-To: <20201109110654.12547-1-brgl@bgdev.pl> References: <20201109110654.12547-1-brgl@bgdev.pl> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Bartosz Golaszewski Use the helper that checks for overflows internally instead of manually calculating the size of the new array. Signed-off-by: Bartosz Golaszewski Acked-by: Michael S. Tsirkin --- drivers/vhost/vringh.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/vhost/vringh.c b/drivers/vhost/vringh.c index 8bd8b403f087..08a0e1c842df 100644 --- a/drivers/vhost/vringh.c +++ b/drivers/vhost/vringh.c @@ -198,7 +198,8 @@ static int resize_iovec(struct vringh_kiov *iov, gfp_t gfp) flag = (iov->max_num & VRINGH_IOV_ALLOCATED); if (flag) - new = krealloc(iov->iov, new_num * sizeof(struct iovec), gfp); + new = krealloc_array(iov->iov, new_num, + sizeof(struct iovec), gfp); else { new = kmalloc_array(new_num, sizeof(struct iovec), gfp); if (new) { From patchwork Mon Nov 9 11:06:50 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 1396683 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=bgdev.pl Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=bgdev-pl.20150623.gappssmtp.com header.i=@bgdev-pl.20150623.gappssmtp.com header.a=rsa-sha256 header.s=20150623 header.b=xWDYj2fB; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4CV7Wd752lz9sRK for ; Mon, 9 Nov 2020 22:07:57 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729770AbgKILHy (ORCPT ); Mon, 9 Nov 2020 06:07:54 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59558 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729617AbgKILHN (ORCPT ); Mon, 9 Nov 2020 06:07:13 -0500 Received: from mail-wr1-x442.google.com (mail-wr1-x442.google.com [IPv6:2a00:1450:4864:20::442]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 69F2CC061A53 for ; Mon, 9 Nov 2020 03:07:09 -0800 (PST) Received: by mail-wr1-x442.google.com with SMTP id s8so1124771wrw.10 for ; Mon, 09 Nov 2020 03:07:09 -0800 (PST) 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:in-reply-to:references :mime-version:content-transfer-encoding; bh=iECHQmtOjlKNpXGH67tnBHQ9XW515B1GPzEiiSpCWAs=; b=xWDYj2fBLmHGr/Gy85P06U2gKM3D4irotg7Jdhw1AyiBnRSDDMWVsz+UsdmoIiJ1F6 nBdb9dPDrCjuHs2goVBwrr6i6L4C7nSkDDkQ52BSJEmC2Sc+Lp3e/ArXtKhoYyq2tjlm enDVDKNvTwWmAC7ozqpXJrCXGsNiuZH44PQN4c/a7dPfoMS2oPpYh7i3mNmXgbZlJvFE GIrrnt+rSBU33vfETv4kqGiEQcGPEdca2Jt17hBqqYBDAZWSOPL0sA/n+Zbdml7GLRC0 DkMxtT7MSeOhKhfcqgYLWG72cc/mZ35Yq91+n4gnXf+cL4HS0AnCOswBrOImbVlmN+XV kQGQ== 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:in-reply-to :references:mime-version:content-transfer-encoding; bh=iECHQmtOjlKNpXGH67tnBHQ9XW515B1GPzEiiSpCWAs=; b=CKYLS2Ye7TghB8bKJtHwFY7hNAjleMQRtKKXX8tyIhFuALBmniKtf7C+GnB1eRzlwW x3NLPlw5PfsceKOojJS0fLnuOcRVnxB1Z4S43kx/1WGZAsxshavVdbuQiLMue9iTY/Hr DVQAW9i4lzho3D+TMlKM/zj0l3Olnk77KAEYt6I0Hzo1GnxgKaZRYRYZveCXxDcDJuTE ouEt6WspRSA8Sj3yWQOniVJbpXsJ+BzqU7KUpi7UFh+FZYo88cHHgIVw5A4vrv7QEslz m8hsOYQfQEio67Rxnuni0VqA7vkldnh1+Q+ylkudVsfuvGpPWO/T9xeVQ4/waCfzR3// 1fWQ== X-Gm-Message-State: AOAM533bNu86neoHnYzOo5RZDdzmBegpepHTozyfvL7JHyWXMpIlwT82 KReW9ti7BMZtJPF+EkEz/B6UuQ== X-Google-Smtp-Source: ABdhPJxJIoqvvP9l/776r7Kb43HV1AC5EVztuqTnCOgkzEIqxPExxehDC+JhspQEHF3syfUB3O2Rrw== X-Received: by 2002:adf:eb4f:: with SMTP id u15mr17320974wrn.165.1604920028177; Mon, 09 Nov 2020 03:07:08 -0800 (PST) Received: from localhost.localdomain (lfbn-nic-1-190-206.w2-15.abo.wanadoo.fr. [2.15.39.206]) by smtp.gmail.com with ESMTPSA id d3sm12815582wre.91.2020.11.09.03.07.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Nov 2020 03:07:07 -0800 (PST) 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 v3 5/9] pinctrl: use krealloc_array() Date: Mon, 9 Nov 2020 12:06:50 +0100 Message-Id: <20201109110654.12547-6-brgl@bgdev.pl> X-Mailer: git-send-email 2.29.1 In-Reply-To: <20201109110654.12547-1-brgl@bgdev.pl> References: <20201109110654.12547-1-brgl@bgdev.pl> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Bartosz Golaszewski Use the helper that checks for overflows internally instead of manually calculating the size of the new array. Signed-off-by: Bartosz Golaszewski Reviewed-by: Andy Shevchenko Reviewed-by: Linus Walleij --- drivers/pinctrl/pinctrl-utils.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pinctrl/pinctrl-utils.c b/drivers/pinctrl/pinctrl-utils.c index f2bcbf62c03d..93df0d4c0a24 100644 --- a/drivers/pinctrl/pinctrl-utils.c +++ b/drivers/pinctrl/pinctrl-utils.c @@ -39,7 +39,7 @@ int pinctrl_utils_reserve_map(struct pinctrl_dev *pctldev, if (old_num >= new_num) return 0; - new_map = krealloc(*map, sizeof(*new_map) * new_num, GFP_KERNEL); + new_map = krealloc_array(*map, new_num, sizeof(*new_map), GFP_KERNEL); if (!new_map) { dev_err(pctldev->dev, "krealloc(map) failed\n"); return -ENOMEM; From patchwork Mon Nov 9 11:06:51 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 1396681 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=bgdev.pl Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=bgdev-pl.20150623.gappssmtp.com header.i=@bgdev-pl.20150623.gappssmtp.com header.a=rsa-sha256 header.s=20150623 header.b=FyQZtjHq; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4CV7WS5n0Hz9sS8 for ; Mon, 9 Nov 2020 22:07:48 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729751AbgKILHq (ORCPT ); Mon, 9 Nov 2020 06:07:46 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59578 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729629AbgKILHN (ORCPT ); Mon, 9 Nov 2020 06:07:13 -0500 Received: from mail-wr1-x442.google.com (mail-wr1-x442.google.com [IPv6:2a00:1450:4864:20::442]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2E153C061A4A for ; Mon, 9 Nov 2020 03:07:11 -0800 (PST) Received: by mail-wr1-x442.google.com with SMTP id b8so8232340wrn.0 for ; Mon, 09 Nov 2020 03:07:11 -0800 (PST) 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:in-reply-to:references :mime-version:content-transfer-encoding; bh=6cAnhvx340aJ9UoLX1zbzAI7OYOIgRl1WRMoR3sh/3E=; b=FyQZtjHqfEyQnPv0TcpcPtzRKkDJw+5CmWnvLutUBlrvUrtATk0Us2kMQ7uvhmWfUK 0eNbMBkRypCB1SmS4/cqrqAasUoL4DRnxlRBQpx1RY6Tmr/Nmpi1qrl9p+XJQGfeV43E mFuEs1COfnJNQITfkQgHpOePzHVg4ZkMOJ3R2gxEfTlMvi1SeMz0xGFn8SpGlE7k3cDi ir/hpb8caCpkIei6+oq3/Ia4klZ1In4veaRJTPot+bbCaCVpPH5XTZ/5HXwtNVY6LaVL 3yuEq5NuC3KQYT8NF2HDTR54VuMPtxnryjgjsmx6McYPUOFssMfDPYJ7o2Sth0VExlL2 F4tA== 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:in-reply-to :references:mime-version:content-transfer-encoding; bh=6cAnhvx340aJ9UoLX1zbzAI7OYOIgRl1WRMoR3sh/3E=; b=E1UAvLmVszNPa4QhGQdIC9An1VixtMLVCQZL2WkA9jt+d4oH0jcRuBo5wz8NKwcXoi 15C5WnQm5rCfk3EJYBsAi3HEMcuuAUEsSlf8H7KikWB6DcT43Y2P1rVbFDQfkW04QBTy 7ZYLudqI92ggxepS+7gE1nwDHVfzp860IZeSdC9XwNJVWoC7RjSKL38i0ffXbW/VrWhA qS++GgOn9iFzdaeHPVvG9z9zzdKsV01wa9AVZYVE2+pZkgWvX3S7CfCcO/zvhbsnHgvD x+uE4ho9Toe4IR3//1GPwJ792bqCTttiflaFCSnZRIzkCuh96ad9rJoI436mB5c3uWnX yPNw== X-Gm-Message-State: AOAM532PSE69/32H7AZxJ3Y5uV0GkgrVhe27TQ25abKudGUo08rlbfrX e85jpdxPoybEHfyJdSpTyqlmVQ== X-Google-Smtp-Source: ABdhPJzVQIP6CvZC6MnxUgT+6qZKHTI55QEgy3Y0wnhrHAwRmJiPirAD+L1SJbeYTFQHWYNVPaOZHg== X-Received: by 2002:adf:a315:: with SMTP id c21mr17265337wrb.272.1604920029898; Mon, 09 Nov 2020 03:07:09 -0800 (PST) Received: from localhost.localdomain (lfbn-nic-1-190-206.w2-15.abo.wanadoo.fr. [2.15.39.206]) by smtp.gmail.com with ESMTPSA id d3sm12815582wre.91.2020.11.09.03.07.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Nov 2020 03:07:09 -0800 (PST) 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 , Borislav Petkov Subject: [PATCH v3 6/9] edac: ghes: use krealloc_array() Date: Mon, 9 Nov 2020 12:06:51 +0100 Message-Id: <20201109110654.12547-7-brgl@bgdev.pl> X-Mailer: git-send-email 2.29.1 In-Reply-To: <20201109110654.12547-1-brgl@bgdev.pl> References: <20201109110654.12547-1-brgl@bgdev.pl> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Bartosz Golaszewski Use the helper that checks for overflows internally instead of manually calculating the size of the new array. Signed-off-by: Bartosz Golaszewski Acked-by: Borislav Petkov --- drivers/edac/ghes_edac.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/edac/ghes_edac.c b/drivers/edac/ghes_edac.c index a918ca93e4f7..6d1ddecbf0da 100644 --- a/drivers/edac/ghes_edac.c +++ b/drivers/edac/ghes_edac.c @@ -207,8 +207,8 @@ static void enumerate_dimms(const struct dmi_header *dh, void *arg) if (!hw->num_dimms || !(hw->num_dimms % 16)) { struct dimm_info *new; - new = krealloc(hw->dimms, (hw->num_dimms + 16) * sizeof(struct dimm_info), - GFP_KERNEL); + new = krealloc_array(hw->dimms, hw->num_dimms + 16, + sizeof(struct dimm_info), GFP_KERNEL); if (!new) { WARN_ON_ONCE(1); return; From patchwork Mon Nov 9 11:06:52 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 1396682 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=bgdev.pl Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=bgdev-pl.20150623.gappssmtp.com header.i=@bgdev-pl.20150623.gappssmtp.com header.a=rsa-sha256 header.s=20150623 header.b=tjfVVqU7; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4CV7WX3VwKz9sVK for ; Mon, 9 Nov 2020 22:07:52 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729746AbgKILHo (ORCPT ); Mon, 9 Nov 2020 06:07:44 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59560 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729644AbgKILHO (ORCPT ); Mon, 9 Nov 2020 06:07:14 -0500 Received: from mail-wm1-x341.google.com (mail-wm1-x341.google.com [IPv6:2a00:1450:4864:20::341]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EA5E8C040203 for ; Mon, 9 Nov 2020 03:07:12 -0800 (PST) Received: by mail-wm1-x341.google.com with SMTP id 10so6808017wml.2 for ; Mon, 09 Nov 2020 03:07:12 -0800 (PST) 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:in-reply-to:references :mime-version:content-transfer-encoding; bh=/Z+wwi/tFfEYyTBQIvrIHI75+eOD/rtT/HKhEUnLNfQ=; b=tjfVVqU7R8IyKW2OW0hqxniG20DAxuXL1U31YiQAfRN+BbUoTlDF20ez4aqC9/5uW0 00hwc/b1caGHmtDgwFtcQTeA95vSaxFPG5Dn4I4WT//9X1vHXDHfVZSv7b68b2Gk+Ggo GuV/WPBhQvweB/8nzh+JOIGU28BaLQQxoW0Qew8uhVen2qKctk4tkH6Xe9kG6J+foPfc erqT54DF3qf5z2lmzDigmhC40Lmu2CCaR3SODiQR0zsXHTxRNzgzEn46xeTAsbTqzkbP 1FKBEQcVgIDxKxzGBxNluYDKXrOoCH+3ipKaqLWCZx68VW0e53YAPO8nIb1YuhtZ+35J 7AYg== 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:in-reply-to :references:mime-version:content-transfer-encoding; bh=/Z+wwi/tFfEYyTBQIvrIHI75+eOD/rtT/HKhEUnLNfQ=; b=Eo79vfhZROoL8GPbP4vacAuesliC2XH33iahblXv0y1Ukq3x7/mzdJ/rqyTpO92iV+ Gc3BpHPhUtIRIqsX2AF2PUStl4qY13X8XC7vPMtRb7LztH+Mg6g7pm13wBtop5optL0M n+8i1PVy6Nix1l8kuEvqOtChD5US7LjAslhVsbmLdG+TDgYsn6evtRpjU8yPCNO1V1Om J70aRBt5asbx0+hhE4ZuBJKTg/lG089GDSGpl5VO3pk5FNCpHDsI54qrdysMvBoS32/e HnhP7NSc9lhBYj8ir2j9o6mSfoLOJ0NJe3wINgfxhMCNJjThffPf4WoUQGwPHihImLJc 7l6w== X-Gm-Message-State: AOAM530rrktH0Ky4NP4JJOdb6kKSZ/FjrhbtnVR1S9KGlm1XWQuRTnAq puHxYqfds+0qhoz3ui2VCko66Q== X-Google-Smtp-Source: ABdhPJwkOvrpUKfB7tFd6Uj/97bXlddiGlW4tIGfcvqVJ2uUup2j5kk7Nqp7LIVYpPQ8tPEEkocJmw== X-Received: by 2002:a1c:5f45:: with SMTP id t66mr7223842wmb.132.1604920031725; Mon, 09 Nov 2020 03:07:11 -0800 (PST) Received: from localhost.localdomain (lfbn-nic-1-190-206.w2-15.abo.wanadoo.fr. [2.15.39.206]) by smtp.gmail.com with ESMTPSA id d3sm12815582wre.91.2020.11.09.03.07.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Nov 2020 03:07:11 -0800 (PST) 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 , Daniel Vetter Subject: [PATCH v3 7/9] drm: atomic: use krealloc_array() Date: Mon, 9 Nov 2020 12:06:52 +0100 Message-Id: <20201109110654.12547-8-brgl@bgdev.pl> X-Mailer: git-send-email 2.29.1 In-Reply-To: <20201109110654.12547-1-brgl@bgdev.pl> References: <20201109110654.12547-1-brgl@bgdev.pl> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Bartosz Golaszewski Use the helper that checks for overflows internally instead of manually calculating the size of the new array. Signed-off-by: Bartosz Golaszewski Acked-by: Daniel Vetter --- drivers/gpu/drm/drm_atomic.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c index 58527f151984..09ad6a2ec17b 100644 --- a/drivers/gpu/drm/drm_atomic.c +++ b/drivers/gpu/drm/drm_atomic.c @@ -960,7 +960,8 @@ drm_atomic_get_connector_state(struct drm_atomic_state *state, struct __drm_connnectors_state *c; int alloc = max(index + 1, config->num_connector); - c = krealloc(state->connectors, alloc * sizeof(*state->connectors), GFP_KERNEL); + c = krealloc_array(state->connectors, alloc, + sizeof(*state->connectors), GFP_KERNEL); if (!c) return ERR_PTR(-ENOMEM); From patchwork Mon Nov 9 11:06:53 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 1396680 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=bgdev.pl Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=bgdev-pl.20150623.gappssmtp.com header.i=@bgdev-pl.20150623.gappssmtp.com header.a=rsa-sha256 header.s=20150623 header.b=HhaZo+nO; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4CV7WQ0NXwz9sVK for ; Mon, 9 Nov 2020 22:07:45 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729700AbgKILHl (ORCPT ); Mon, 9 Nov 2020 06:07:41 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59598 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729661AbgKILHP (ORCPT ); Mon, 9 Nov 2020 06:07:15 -0500 Received: from mail-wr1-x442.google.com (mail-wr1-x442.google.com [IPv6:2a00:1450:4864:20::442]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AA94EC0617A7 for ; Mon, 9 Nov 2020 03:07:14 -0800 (PST) Received: by mail-wr1-x442.google.com with SMTP id w1so8230045wrm.4 for ; Mon, 09 Nov 2020 03:07:14 -0800 (PST) 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:in-reply-to:references :mime-version:content-transfer-encoding; bh=J57Co4keOJLPpkOAtm30WeNaGboSbDo7KGbxSzSraLw=; b=HhaZo+nOQzKzvbAFydHzhq/fvxbfXxDfWyMZKdv59I7MN/VIBjySEDnQMe/RJ80TcA NqPHcZzpiT9Vl9Yv9IKKm9MwVsxWHCkStLHrUf+NXGH1EdedBhImimOgYD1RGc+hVmS7 w0LenYwK8h9OxuojkNtPP/U49HQw6iHdNr1gHrLWaakhF3wjn2TLICq+r+Fvsy9Kj7WT gmAKJGEedbXEoO0msCfLubbx9HXBW+3H7tEdvhbVHTF26G/FKgFsRpd/Awh3sW7fPLGz 7w8aHtYKHTSY1GKa52i0+6eq6D3dhx5U74J+YXZObagUWKCdgL97HF3UpwbYvvsgC9kA GnUg== 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:in-reply-to :references:mime-version:content-transfer-encoding; bh=J57Co4keOJLPpkOAtm30WeNaGboSbDo7KGbxSzSraLw=; b=uhOSNV2Om/do5ZDi3CL7ov+xzt2dA3NaBHxPONqNEIC9YqzGpL4C17r42P93m0Wh+X biNj6D35ljsGr8k/asGajm764FlvhhTNB8GkHlvbsBR3NXffokERQ4Se+J2Pkfe/ED0y /qtO4yDtb0m5y2zhH/Zee2mOo+fXem5/eUzBtk6oiwajbB965odTm05hFqPJWMZkuTw0 y0I0Z28Wrq9MEAL1LoczkENJvnoVnvKCD/wRFcPXAoqMnocI5qFbiTosBw3qYyEQOo1z i7UXnTqL4lYGikqzpqQMp4IxvwhiMb5R0lBSEw0zh3n9fWc246BBI1c4Af74RbDtdHRA rtow== X-Gm-Message-State: AOAM533aNs6tb1jtpuEIn6P3v6mpJVtjqXkCSAI+uDjjohbIN1Kqc8/W kuhSX6iORkkGBeLdnr5hTDv8XQ== X-Google-Smtp-Source: ABdhPJzNywkuCE6gKvE4DqCuDXqgftMItDHnLcQ5bFuAdPNNL+1SS5MLyT2l3jA/w7yub/ZI0a6q7A== X-Received: by 2002:a5d:438f:: with SMTP id i15mr17558818wrq.121.1604920033391; Mon, 09 Nov 2020 03:07:13 -0800 (PST) Received: from localhost.localdomain (lfbn-nic-1-190-206.w2-15.abo.wanadoo.fr. [2.15.39.206]) by smtp.gmail.com with ESMTPSA id d3sm12815582wre.91.2020.11.09.03.07.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Nov 2020 03:07:12 -0800 (PST) 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 v3 8/9] hwtracing: intel: use krealloc_array() Date: Mon, 9 Nov 2020 12:06:53 +0100 Message-Id: <20201109110654.12547-9-brgl@bgdev.pl> X-Mailer: git-send-email 2.29.1 In-Reply-To: <20201109110654.12547-1-brgl@bgdev.pl> References: <20201109110654.12547-1-brgl@bgdev.pl> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Bartosz Golaszewski Use the helper that checks for overflows internally instead of manually calculating the size of the new array. Signed-off-by: Bartosz Golaszewski --- drivers/hwtracing/intel_th/msu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c index 3a77551fb4fc..7d95242db900 100644 --- a/drivers/hwtracing/intel_th/msu.c +++ b/drivers/hwtracing/intel_th/msu.c @@ -2002,7 +2002,7 @@ nr_pages_store(struct device *dev, struct device_attribute *attr, } nr_wins++; - rewin = krealloc(win, sizeof(*win) * nr_wins, GFP_KERNEL); + rewin = krealloc_array(win, nr_wins, sizeof(*win), GFP_KERNEL); if (!rewin) { kfree(win); return -ENOMEM; From patchwork Mon Nov 9 11:06:54 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 1396676 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=bgdev.pl Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=bgdev-pl.20150623.gappssmtp.com header.i=@bgdev-pl.20150623.gappssmtp.com header.a=rsa-sha256 header.s=20150623 header.b=RG2F+82o; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4CV7W64JRYz9sVZ for ; Mon, 9 Nov 2020 22:07:30 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729697AbgKILH1 (ORCPT ); Mon, 9 Nov 2020 06:07:27 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59616 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729700AbgKILHR (ORCPT ); Mon, 9 Nov 2020 06:07:17 -0500 Received: from mail-wr1-x442.google.com (mail-wr1-x442.google.com [IPv6:2a00:1450:4864:20::442]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8677DC0617A7 for ; Mon, 9 Nov 2020 03:07:16 -0800 (PST) Received: by mail-wr1-x442.google.com with SMTP id c17so8204697wrc.11 for ; Mon, 09 Nov 2020 03:07:16 -0800 (PST) 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:in-reply-to:references :mime-version:content-transfer-encoding; bh=uU00Tfvm+17A7iE8x45GJfsjWZ/7CO3W5FPvjO+v7UE=; b=RG2F+82oEqldWg6NTKGoC7UPk0O3vTxH9eTGTjyarUGvACcl6LwiyVBskaFEt1Pqm6 qMxcfA0KMfkW5wNV3g6IT+hgAs2iqXACJ3N3dvfqSrCeZzUAOMwEc5r60U68oM/abbdp BVvztISZFGbho3XV9t5SL1u/kBS3vwLpauBxX0yXvm1ttFGAsQfYFHV+KUfWm52I7cCD 8gCnDBCe0CgXSwSibJtmk6kjahUuLaDNlL9UchomHElEtgRdetA4QUIzhJ3s2kqYQJIy hMGwQ19uDlTKAD9Oe+7Y24DOg21aGPiQwGkonVuLgyYUV5H0Om/MAWDetrgEg+DE7LJv /kLw== 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:in-reply-to :references:mime-version:content-transfer-encoding; bh=uU00Tfvm+17A7iE8x45GJfsjWZ/7CO3W5FPvjO+v7UE=; b=rfGj3cR/Qw1N2ApOYf2jWarQ51UHBzJE1ps/QBoCEGAr2f+g4g00Bu/Yb2ndfNKkhH Vt9slpbrWu0N7PhxcFlGkcMPxEHONgEVsZhiHFfsw0MMLCHCnri6HTZxaD297OFpu78G CQRe/O+VHVAHDLsKVLZ+lDCNfAOAEvSpKu2b3vmEBkk7SONFvNlCgR8y06nv8xHOj9mn JqHwbMWWo5dZqS7aboBz+oIc2hdRLFyOE8ZYpTUQR6rZGaCAshK24IKe3T9BgMlGERcz axaxSJUOf/tjzDRhQFWgQ52WOTMD8eJAMFv9eBiJu1aHy6TP4wZIerC3TwLAqNSoqhfk 5eOA== X-Gm-Message-State: AOAM530fz9L2xEWFBitMQHSN0OFdCSR1bc/KE5p4kcund2H9y6SFoFDM jNVMXtTwCtuuwjkFYWydneCPoQ== X-Google-Smtp-Source: ABdhPJxqEseYvyvPu8S4NoqtIS4iNC5GkWi9kRY0f7fjCzxFROga8iAwMRGM7mBzZtGU9vsmm1Ko/Q== X-Received: by 2002:a5d:6a83:: with SMTP id s3mr9918092wru.397.1604920035266; Mon, 09 Nov 2020 03:07:15 -0800 (PST) Received: from localhost.localdomain (lfbn-nic-1-190-206.w2-15.abo.wanadoo.fr. [2.15.39.206]) by smtp.gmail.com with ESMTPSA id d3sm12815582wre.91.2020.11.09.03.07.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Nov 2020 03:07:14 -0800 (PST) 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 v3 9/9] dma-buf: use krealloc_array() Date: Mon, 9 Nov 2020 12:06:54 +0100 Message-Id: <20201109110654.12547-10-brgl@bgdev.pl> X-Mailer: git-send-email 2.29.1 In-Reply-To: <20201109110654.12547-1-brgl@bgdev.pl> References: <20201109110654.12547-1-brgl@bgdev.pl> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Bartosz Golaszewski Use the helper that checks for overflows internally instead of manually calculating the size of the new array. Signed-off-by: Bartosz Golaszewski Acked-by: Christian König --- drivers/dma-buf/sync_file.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/dma-buf/sync_file.c b/drivers/dma-buf/sync_file.c index 5a5a1da01a00..20d9bddbb985 100644 --- a/drivers/dma-buf/sync_file.c +++ b/drivers/dma-buf/sync_file.c @@ -270,8 +270,7 @@ static struct sync_file *sync_file_merge(const char *name, struct sync_file *a, fences[i++] = dma_fence_get(a_fences[0]); if (num_fences > i) { - nfences = krealloc(fences, i * sizeof(*fences), - GFP_KERNEL); + nfences = krealloc_array(fences, i, sizeof(*fences), GFP_KERNEL); if (!nfences) goto err;