From: Artem Bityutskiy <dedekind1@gmail.com>
To: Kevin Cernekee <cernekee@gmail.com>
Cc: linux-mtd@lists.infradead.org
Subject: Re: [PATCH] mkfs.ubifs: Fix heap corruption on LEB overrun
Date: Thu, 23 Sep 2010 16:06:09 +0300 [thread overview]
Message-ID: <1285247169.29268.124.camel@localhost> (raw)
In-Reply-To: <1fcf6a9591841eba82df96a80da0bdfa@localhost>
On Wed, 2010-09-22 at 16:01 -0700, Kevin Cernekee wrote:
> If max_leb_cnt (-c option) is set too low, set_lprops() will corrupt
> the heap and may result in a scary looking crash:
>
> $ bin/mkfs.ubifs -U -r romfs -o ubifs.img -m 512 -e 15360 -c 39
> Error: max_leb_cnt too low (241 needed)
> *** glibc detected *** bin/mkfs.ubifs: double free or corruption (!prev): 0x088fe070 ***
> ======= Backtrace: =========
> /lib32/libc.so.6(+0x6c231)[0xf75fb231]
> /lib32/libc.so.6(+0x6dab8)[0xf75fcab8]
> /lib32/libc.so.6(cfree+0x6d)[0xf75ffb9d]
> bin/mkfs.ubifs[0x804e801]
> bin/mkfs.ubifs[0x804e94b]
> bin/mkfs.ubifs[0x804e99d]
> /lib32/libc.so.6(__libc_start_main+0xe6)[0xf75a5bd6]
> bin/mkfs.ubifs(__fxstat64+0x55)[0x80491e1]
> ======= Memory map: ========
Pushed, thanks.
--
Best Regards,
Artem Bityutskiy (Артём Битюцкий)
prev parent reply other threads:[~2010-09-23 13:07 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-22 23:01 [PATCH] mkfs.ubifs: Fix heap corruption on LEB overrun Kevin Cernekee
2010-09-23 13:06 ` Artem Bityutskiy [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=1285247169.29268.124.camel@localhost \
--to=dedekind1@gmail.com \
--cc=cernekee@gmail.com \
--cc=linux-mtd@lists.infradead.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).