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: 11891073 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8104415E6 for ; Mon, 9 Nov 2020 11:08:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 582CE2080C for ; Mon, 9 Nov 2020 11:08:27 +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="SLmwWdYm" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729539AbgKILHE (ORCPT ); Mon, 9 Nov 2020 06:07:04 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59490 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729519AbgKILHD (ORCPT ); Mon, 9 Nov 2020 06:07:03 -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 71091C0613CF for ; Mon, 9 Nov 2020 03:07:02 -0800 (PST) Received: by mail-wr1-x443.google.com with SMTP id j7so968050wrp.3 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=DfI3oT6xvnhERmizudmYwDSedifXEiEW8V0QcGe8JLfrLOVtjNAsYFCGURa8nbCA3r 57I20jH7ZcfKR/MmuR0UyrmsDVFg5ICRtHc+qsw6ahXVPpUrI0bYfNCwOpJjVXarJprY cOu2dziLK4DoyLT2EIDHNUQ0FHMsZM1hMlT+fIOEPWc3JgP3eUuDj1plQjMR0Cxclrd9 aziNkPc5/ezT0nVZgt3wyut5m/RRLfnj8zD2ZxwDgvsVEXlO+1xgpf+LE00lS/Vi7bjm +DXFt24TiAbmyaWj3g1iL21meU/Pk3bqYinq1knjkbhOoadB7n3I93QwzLGLl3HS1liv tr9w== X-Gm-Message-State: AOAM5301S1fDAyx/Nt4DHibqGUSfBBmM4FgQuaN44/MthxNH9wGaAI7d WB4hK9EYeIDoT4uUjB4T0uYTzQ== 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: linux-edac@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: 11891007 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1C4D86A2 for ; Mon, 9 Nov 2020 11:07:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E96602084C for ; Mon, 9 Nov 2020 11:07:08 +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="aox5vh8y" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729557AbgKILHH (ORCPT ); Mon, 9 Nov 2020 06:07:07 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59512 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729510AbgKILHF (ORCPT ); Mon, 9 Nov 2020 06:07:05 -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 297BEC0613D4 for ; Mon, 9 Nov 2020 03:07:04 -0800 (PST) Received: by mail-wr1-x441.google.com with SMTP id o15so383526wru.6 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=Rrjdn2asjmzgSvkP8uHAVgPqHPp5S/+yNItsy41OVjGDqOrpV2TVbx0xnRcWspulfA ziKh61EvjgODl7r5OCFt4D3tF9Ye37+0VEQU876okugfZksTxAPlH1zzgTaSA28XH9jl RKu71TWAvbpBTeCCREWc9i1z9iIYPWCVW7PiyLP2H8s4TK2TYcV8Qk/pNonJ/XZ43Vs0 oh2iRpQV6e/LUz9Dk23/VdTgoxpD/RPZWyixSDctpb8obNlEMNftkyqJ2GIFyjL6WluL KAuntAMF8XNopSN/lta62yMOGOkD75B24K0mX9sOn5kptgLhI+kkMrn4wu4VTYz9JFVw LKmg== X-Gm-Message-State: AOAM532QhjafVKPsDTf/Y68xKI0OsUJIC7dhNtenxLvfMbtV9pyNn77X EPr9tM+jLKhQVBciEeRbMO7F8g== 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: linux-edac@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. 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[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: linux-edac@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: 11891051 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E410215E6 for ; Mon, 9 Nov 2020 11:08:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B9870206E5 for ; Mon, 9 Nov 2020 11:08:03 +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="lrGFiV0J" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729645AbgKILIB (ORCPT ); Mon, 9 Nov 2020 06:08:01 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59548 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729609AbgKILHL (ORCPT ); Mon, 9 Nov 2020 06:07:11 -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 A00E6C061A48 for ; Mon, 9 Nov 2020 03:07:07 -0800 (PST) Received: by mail-wr1-x441.google.com with SMTP id 33so8212160wrl.7 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=fxMBZ+0MGuPmoxkv4qf3jrBMzIMRT3ofOTdbAMJrklhdS7MO1Iqdz5iL1wtk9qagq6 C5WVS8KY5A6hozy/Q53R1P0vz31sUhiByqwYmelTstGMCXXbOPx3Ohu94oUmx9qo8HZu BMYzocaNYvbZnzAjBZ/dki6shvQVSOvDVcKgZSfFCxEqNccSYJv2KXGxD741DE2N/HO2 1kA0p0Q4vY9k5IXWJNhLuaBozAKp2I395uH0e00KnEdveylcppmHHIY2lk5uixVWqRAc 8Kupn1EQakizp9HeM3F+q5AKUoAgcD1yiopoFZh3Ag+/qX88k8p12hNXwa6DEHq3mH/i FNRQ== X-Gm-Message-State: AOAM533MbzZYqJHDZV1n7Jhq+f4O5f4Mj7JPdsAJSMNq1frDvifORUNH uH5nm+DXt18BuqJ2oebNWAJOpA== 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: linux-edac@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: 11891045 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BF66F6A2 for ; Mon, 9 Nov 2020 11:07:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9BAF120731 for ; Mon, 9 Nov 2020 11:07:51 +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="xWDYj2fB" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729639AbgKILHo (ORCPT ); Mon, 9 Nov 2020 06:07:44 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59546 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729640AbgKILHN (ORCPT ); Mon, 9 Nov 2020 06:07:13 -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 69E8CC061A52 for ; Mon, 9 Nov 2020 03:07:09 -0800 (PST) Received: by mail-wr1-x441.google.com with SMTP id c17so8204330wrc.11 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=dDuSQuw2/ipbE65ama8H73CHxzPI9UlIdO69j6vZCAE572K9nFdh7qpv8xy74KG+VW wHF+e7m+4SQSRYbR4JofNzsBu2NRWQzG6KWMxvNTa0KJYnX6KzCr/5TpLoIB0LyFOedz u4EdgDiM9R+nyceYP7375QzgRE+enK/LAW6npE3DJvKjFlAQxUcTy5FyFKrkktDNssGV /o7eteXR+6ULRPX9I2o3r5gJzeD5KjNgKHH9VzrAiO5LwMV3uKDj8rGssk6A4b20RDMg wV+bCI38A3c1QQRJJy/PjKcTqv4noozru4erYgPuDWZIVxXC93q9Et8hhLkbxY0SRsee HJFQ== X-Gm-Message-State: AOAM533+tUVUiMQBCNA/f4prn06YkRtFg3jtbw86PDgbWWesxgJxigu2 tNUHGQnIe8IErSxIeP+CiHdQvw== 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: linux-edac@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: 11891049 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 58FE46A2 for ; Mon, 9 Nov 2020 11:08:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 335A0206ED for ; Mon, 9 Nov 2020 11:08:00 +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="FyQZtjHq" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729760AbgKILHx (ORCPT ); Mon, 9 Nov 2020 06:07:53 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59544 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729627AbgKILHN (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 2DDD0C061A04 for ; Mon, 9 Nov 2020 03:07:11 -0800 (PST) Received: by mail-wr1-x442.google.com with SMTP id p8so7416829wrx.5 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=CmyITnmqPoUhCTUulyqcSWhbt+sVGfKXCWLbzGCuuD1+Y7opbdXBRMxuPNPIbngdrA nGxHp/FVQTNAPyo7OoDzrAU+XMNtGKktrQvDNy41mOLSvGgWh5/lIGbRfHftNBNC7lUs N82UajtLwHPfonAHaed+KoM9T8Ba+kzPo02Za88dhB9rNh8ug766HxPG+zs0zsNxYpg4 2odqmu/PfHnlFl3t1HwJyr06GlcFTyrUsEa46EJbHZ7kN466kOnl0KTv+trbyF5gNn6/ vwSpUxvYhXQDf71D0PPuu3bCJiyPwYF9nWnVQmEIDZ20POuPUyODXQg8HeLWJWxwxz7/ w/1Q== X-Gm-Message-State: AOAM532piPVdlrbcNbEpKn/Hy+ceOL30VIgBxz7XILKoxl2IVbQOu5Rn kpiYXpdVJu9WHWopudKwKhV+fQ== 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: linux-edac@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: 11891043 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0193B15E6 for ; Mon, 9 Nov 2020 11:07:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CEC32206ED for ; Mon, 9 Nov 2020 11:07:49 +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="tjfVVqU7" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729615AbgKILHo (ORCPT ); Mon, 9 Nov 2020 06:07:44 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59580 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729632AbgKILHN (ORCPT ); Mon, 9 Nov 2020 06:07:13 -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 E886EC061A56 for ; Mon, 9 Nov 2020 03:07:12 -0800 (PST) Received: by mail-wm1-x341.google.com with SMTP id t67so3187693wmt.5 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=uBg14KWsw7Sqq59VNclVp1Bnj7y2/LOw9CFX51KDBGyxZqfhhEd6R73lGLnqOjo4qO Il92EgoZ3VXAmQDwakH1NzzYhh9GW0fBnUwmgw4TGHlJmEPYn/ZnJF7urnFb8FNruGy7 eQZ3IYCSHnjd+c4zyX/Ub5aqFQOOjhSY5SKHSJvQxKc1ZCax5rs8MCSe+D/q75Uu83YE A9HsaGXmvmKkxE+gCQG6tyAjkDMQ8A9iux1E0NG3T9k4V2+yE4Wgvl99jzg6e/ri0pkp hp1Wgt/IMaTfLL+WAVc+6QCedu5wlw2Ma5uHrhw0ZobAo3q/w23HXVDr3o4l8opY752O 304w== X-Gm-Message-State: AOAM530Yl6pgbKsnKTrN72xm+2Cuo/ti1taZx5RNoPKKy3iG4lV/16Bb 1hJRc+LgkU9fqq98K1BVUjpNsg== 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: linux-edac@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: 11891047 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C3AF66A2 for ; Mon, 9 Nov 2020 11:07:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9A3D320731 for ; Mon, 9 Nov 2020 11:07:52 +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="HhaZo+nO" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729451AbgKILHn (ORCPT ); Mon, 9 Nov 2020 06:07:43 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59590 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729655AbgKILHP (ORCPT ); Mon, 9 Nov 2020 06:07:15 -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 A8313C0613CF for ; Mon, 9 Nov 2020 03:07:14 -0800 (PST) Received: by mail-wr1-x441.google.com with SMTP id c17so8204607wrc.11 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=AAcNoRmERfSZP0uk3xxXi657CRGD6OOSQ0ZNyx8bq5VJRRwyfzkd1rO1rKnx94EEdK XnEhYMd4Kt0jg36xVSDu0rfvcn3PoJXNgXBuSuAYLE5IPjV/elwsWkZwQXyRtdhp3YTN K2jkBilHNryGdpbz8tUnK1tuyuFAJzzMSqrsZ6sZXHW56oMmvCc4y9jJhp/GHLjc3O/1 mBBmM+iuKnrKLQfgI7eL8bFRdW5fekMO4K8LUWgAoV3gW4F20GMY4lZVDZJCLs3lQlUY AtUlM7bjQrKLajNNWyaKsCO6Jeqd6JGB2tI0nUHd3NLCxGiKoKKMVHA7W4vPWcyGRHrk zvWg== X-Gm-Message-State: AOAM533JrS2vrWLshI7h6OZxAtBdgweBuJKb9yAqk2arx4Lok4lkFOxV aK6iRQFZDhPE/bYoFbxPMVswqA== 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: linux-edac@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: 11891033 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3D51E6A2 for ; Mon, 9 Nov 2020 11:07:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 16B87206ED for ; Mon, 9 Nov 2020 11:07:32 +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="RG2F+82o" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729426AbgKILHb (ORCPT ); Mon, 9 Nov 2020 06:07:31 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59614 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729684AbgKILHQ (ORCPT ); Mon, 9 Nov 2020 06:07:16 -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 85178C0617A6 for ; Mon, 9 Nov 2020 03:07:16 -0800 (PST) Received: by mail-wr1-x442.google.com with SMTP id j7so968841wrp.3 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=gObHRNYVk+wYXBAuo0EDzBJuPWRqcdXLmfcQDeCm+IiDK51mQd8Gs0mN84ohmYembJ XZw/vepiQdJJaIJQe8o/6qWj0FiT0HGZGdTuwaYHQGa7ITryw7bAxioYgW0m+0Za1pOA 9JOnrQcXoBDUr5t6xSO1OsELWM6bvvGXyuxzgUAznfVPqZpPCJ4Bx9IYPgck3RRLuc3e 6QX9icnaXQh8a0Jb5jf08S2xaTUs4S9on1cXApKYKAD2mwl7vDIZHL2FVBk7j4lGGZWF vUuik/vjEal0PtO6yPcw+WaSV4ehhxrM2JtCmqkA3mBITwovaxob5gvhsR1A/5bTbAIZ YYEg== X-Gm-Message-State: AOAM531FcDiu5Dy2rGOFCfVxOJmL5VW/Jm8l7GOcekyJya0SUdULa3x9 m4dZTbA75qExXBAWIz89Q4LXoA== 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: linux-edac@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;