From: Sascha Hauer <sha@pengutronix.de>
To: Ahmad Fatoum <ahmad@a3f.at>
Cc: barebox@lists.infradead.org, Xogium <contact@xogium.me>
Subject: Re: [PATCH master v2] fs: fix NULL pointer dereference of fsdrv->truncate for read-only FS
Date: Fri, 9 Jul 2021 22:54:07 +0200 [thread overview]
Message-ID: <20210709205407.GC9782@pengutronix.de> (raw)
In-Reply-To: <20210707065251.760827-1-ahmad@a3f.at>
On Wed, Jul 07, 2021 at 08:52:51AM +0200, Ahmad Fatoum wrote:
> fsdrv->truncate is dereferenced at times without checking for NULL before,
> leading to crashes, e.g. doing:
>
> edit -o /mnt/myext4/FILE some text
>
> on ext4 crashes. Fix this by returning -EROFS when truncate is unimplemented.
>
> Reported-by: Xogium <contact@xogium.me>
> Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
> ---
> v1 -> v2:
> - use dev parameter instead of going through &f->fsdev->dev.
> No functional change, but makes diff easier to verify.
> ---
> fs/fs.c | 16 ++++++++++------
> 1 file changed, 10 insertions(+), 6 deletions(-)
Applied, thanks
Sascha
--
Pengutronix e.K. | |
Steuerwalder Str. 21 | http://www.pengutronix.de/ |
31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox
prev parent reply other threads:[~2021-07-09 20:56 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-07 6:52 Ahmad Fatoum
2021-07-09 20:54 ` Sascha Hauer [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=20210709205407.GC9782@pengutronix.de \
--to=sha@pengutronix.de \
--cc=ahmad@a3f.at \
--cc=barebox@lists.infradead.org \
--cc=contact@xogium.me \
/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