From: David Gibson <david@gibson.dropbear.id.au>
To: Greg Kurz <groug@kaod.org>
Cc: qemu-devel@nongnu.org, qemu-ppc@nongnu.org,
"Edgar E. Iglesias" <edgar.iglesias@xilinx.com>
Subject: Re: [Qemu-devel] [PATCH for-4.0 0/9] ppc: get rid of g_malloc(sizeof(T) * n)
Date: Wed, 28 Nov 2018 09:54:03 +1100 [thread overview]
Message-ID: <20181127225403.GP2251@umbus.fritz.box> (raw)
In-Reply-To: <154332389387.541746.8099441653585015043.stgit@bahia.lab.toulouse-stg.fr.ibm.com>
[-- Attachment #1: Type: text/plain, Size: 807 bytes --]
On Tue, Nov 27, 2018 at 02:04:53PM +0100, Greg Kurz wrote:
> As explained in HACKING, the g_malloc(sizeof(T) * n) construct is unsafe
> because it can't detect multiplication overflowing size_t and doesn't
> allow type checking.
>
> It appears to be used in a bunch of places though:
>
> $ git grep -E 'malloc.*sizeof' | grep ' \* ' | wc -l
> 101
>
> This series fixes the ppc target and ppc machine code. The changes are
> mostly trivial. Only the mac99 and e500 machines required some more work
> that should be reviewed carefully, as it was only compile-tested.
Series applied, thanks.
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 833 bytes --]
prev parent reply other threads:[~2018-11-28 0:31 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-27 13:04 [Qemu-devel] [PATCH for-4.0 0/9] ppc: get rid of g_malloc(sizeof(T) * n) Greg Kurz
2018-11-27 13:05 ` [Qemu-devel] [PATCH for-4.0 1/9] target/ppc: use g_new(T, n) instead " Greg Kurz
2018-11-27 13:42 ` Philippe Mathieu-Daudé
2018-11-27 13:05 ` [Qemu-devel] [PATCH for-4.0 2/9] spapr: " Greg Kurz
2018-11-27 13:05 ` [Qemu-devel] [PATCH for-4.0 3/9] ppc405_boards: " Greg Kurz
2018-11-27 13:41 ` Philippe Mathieu-Daudé
2018-11-27 13:52 ` Greg Kurz
2018-11-27 14:03 ` Philippe Mathieu-Daudé
2018-11-27 13:05 ` [Qemu-devel] [PATCH for-4.0 4/9] ppc405_uc: " Greg Kurz
2018-11-27 13:42 ` Philippe Mathieu-Daudé
2018-11-27 13:05 ` [Qemu-devel] [PATCH for-4.0 5/9] ppc440_bamboo: " Greg Kurz
2018-11-27 13:43 ` Philippe Mathieu-Daudé
2018-11-27 14:01 ` Edgar E. Iglesias
2018-11-27 13:06 ` [Qemu-devel] [PATCH for-4.0 6/9] sam460ex: " Greg Kurz
2018-11-27 13:49 ` Philippe Mathieu-Daudé
2018-11-27 13:06 ` [Qemu-devel] [PATCH for-4.0 7/9] virtex_ml507: " Greg Kurz
2018-11-27 13:47 ` Philippe Mathieu-Daudé
2018-11-27 14:00 ` Edgar E. Iglesias
2018-11-27 13:06 ` [Qemu-devel] [PATCH for-4.0 8/9] mac_newworld: simplify IRQ wiring Greg Kurz
2018-11-27 13:06 ` [Qemu-devel] [PATCH for-4.0 9/9] e500: " Greg Kurz
2018-11-27 13:16 ` [Qemu-devel] [PATCH for-4.0 0/9] ppc: get rid of g_malloc(sizeof(T) * n) Eric Blake
2018-11-27 13:23 ` Greg Kurz
2018-11-27 22:54 ` David Gibson [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20181127225403.GP2251@umbus.fritz.box \
--to=david@gibson.dropbear.id.au \
--cc=edgar.iglesias@xilinx.com \
--cc=groug@kaod.org \
--cc=qemu-devel@nongnu.org \
--cc=qemu-ppc@nongnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).