lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date:   Wed, 9 Jan 2019 09:32:02 +0100
From:   Gerd Hoffmann <>
To:     "Gustavo A. R. Silva" <>
Cc:     Dave Airlie <>, David Airlie <>,
        Daniel Vetter <>,,,
Subject: Re: [PATCH] qxl: Use struct_size() in kzalloc()

On Tue, Jan 08, 2019 at 10:21:52AM -0600, Gustavo A. R. Silva wrote:
> One of the more common cases of allocation size calculations is finding the
> size of a structure that has a zero-sized array at the end, along with memory
> for some number of elements for that array. For example:
> struct foo {
>     int stuff;
>     void *entry[];
> };
> instance = kzalloc(sizeof(struct foo) + sizeof(void *) * count, GFP_KERNEL);
> Instead of leaving these open-coded and prone to type mistakes, we can now
> use the new struct_size() helper:
> instance = kzalloc(struct_size(instance, entry, count), GFP_KERNEL);
> This code was detected with the help of Coccinelle.

Patch queued up.


Powered by blists - more mailing lists