From: Joe Perches <joe@perches.com>
To: "Bartosz Golaszewski" <brgl@bgdev.pl>,
"Andy Shevchenko" <andriy.shevchenko@linux.intel.com>,
"Sumit Semwal" <sumit.semwal@linaro.org>,
"Gustavo Padovan" <gustavo@padovan.org>,
"Christian König" <christian.koenig@amd.com>,
"Mauro Carvalho Chehab" <mchehab@kernel.org>,
"Borislav Petkov" <bp@alien8.de>,
"Tony Luck" <tony.luck@intel.com>,
"James Morse" <james.morse@arm.com>,
"Robert Richter" <rric@kernel.org>,
"Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
"Maxime Ripard" <mripard@kernel.org>,
"Thomas Zimmermann" <tzimmermann@suse.de>,
"David Airlie" <airlied@linux.ie>,
"Daniel Vetter" <daniel@ffwll.ch>,
"Alexander Shishkin" <alexander.shishkin@linux.intel.com>,
"Linus Walleij" <linus.walleij@linaro.org>,
"Michael S . Tsirkin" <mst@redhat.com>,
"Jason Wang" <jasowang@redhat.com>,
"Christoph Lameter" <cl@linux.com>,
"Pekka Enberg" <penberg@kernel.org>,
"David Rientjes" <rientjes@google.com>,
"Joonsoo Kim" <iamjoonsoo.kim@lge.com>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Jaroslav Kysela" <perex@perex.cz>,
"Takashi Iwai" <tiwai@suse.com>
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 <bgolaszewski@baylibre.com>
Subject: Re: [PATCH v2 0/8] slab: provide and use krealloc_array()
Date: Mon, 02 Nov 2020 20:14:16 -0800 [thread overview]
Message-ID: <21d80265fccfcb5d76851c84d1c2d88e0421ab85.camel@perches.com> (raw)
In-Reply-To: <20201102152037.963-1-brgl@bgdev.pl>
On Mon, 2020-11-02 at 16:20 +0100, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bgolaszewski@baylibre.com>
>
> Andy brought to my attention the fact that users allocating an array of
> equally sized elements should check if the size multiplication doesn't
> overflow. This is why we have helpers like kmalloc_array().
>
> However we don't have krealloc_array() equivalent and there are many
> users who do their own multiplication when calling krealloc() for arrays.
>
> This series provides krealloc_array() and uses it in a couple places.
My concern about this is a possible assumption that __GFP_ZERO will
work, and as far as I know, it will not.
next prev parent reply other threads:[~2020-11-03 4:14 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-02 15:20 [PATCH v2 0/8] slab: provide and use krealloc_array() Bartosz Golaszewski
2020-11-02 15:20 ` [PATCH v2 1/8] mm: slab: provide krealloc_array() Bartosz Golaszewski
2020-11-02 15:41 ` Matthew Wilcox
2020-11-02 15:43 ` Bartosz Golaszewski
2020-11-02 15:20 ` [PATCH v2 2/8] ALSA: pcm: use krealloc_array() Bartosz Golaszewski
2020-11-02 15:20 ` [PATCH v2 3/8] vhost: vringh: " Bartosz Golaszewski
2020-11-02 15:20 ` [PATCH v2 4/8] pinctrl: " Bartosz Golaszewski
2020-11-02 15:20 ` [PATCH v2 5/8] edac: ghes: " Bartosz Golaszewski
2020-11-02 15:20 ` [PATCH v2 6/8] drm: atomic: " Bartosz Golaszewski
2020-11-02 15:20 ` [PATCH v2 7/8] hwtracing: intel: " Bartosz Golaszewski
2020-11-02 15:20 ` [PATCH v2 8/8] dma-buf: " Bartosz Golaszewski
2020-11-02 16:10 ` Andy Shevchenko
2020-11-03 4:14 ` Joe Perches [this message]
2020-11-03 10:12 ` [PATCH v2 0/8] slab: provide and " Bartosz Golaszewski
2020-11-03 10:55 ` Andy Shevchenko
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