From: Dave Chinner <david@fromorbit.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: a.sahrawat@samsung.com, xfs@oss.sgi.com,
Vivek Trivedi <t.vivek@samsung.com>,
pankaj.m@samsung.com
Subject: Re: [PATCH v2 2/4] xfsprogs: fix integer overflow in xlog_find_verify_cycle
Date: Mon, 21 Dec 2015 10:45:20 +1100 [thread overview]
Message-ID: <20151220234520.GU26718@dastard> (raw)
In-Reply-To: <20151220153513.GD20135@infradead.org>
On Sun, Dec 20, 2015 at 07:35:13AM -0800, Christoph Hellwig wrote:
> On Fri, Dec 11, 2015 at 04:39:01PM +0530, Vivek Trivedi wrote:
> > Fix unintentional integer overflow in xlog_find_verify_cycle.
> > Reported by coverity.
>
> xfs_daddr_t is a 64-bit integer. How does replacing it with an int fix
> overlows?
xfs_daddr_t is being abused here as a count rather than a disk
address, whereas all the other counts in the function are ints and
so the value can't be more than 32 bits anyway....
> xlog_find_verify_cycle originates in the kernel code, so any fix
> should probably be done there first.
I'll pull all the libxfs changes made first in userspace back into
the kernel - no point making people jump throw hoops just to get a
fix into the libxfs code...
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs
next prev parent reply other threads:[~2015-12-20 23:45 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-11 11:08 [PATCH v2 0/4] xfsprogs misc fixes Vivek Trivedi
2015-12-11 11:09 ` [PATCH v2 1/4] xfsprogs: xfs_io: fix a memory leak in imap_f Vivek Trivedi
2015-12-20 15:33 ` Christoph Hellwig
2015-12-20 23:48 ` Dave Chinner
2015-12-11 11:09 ` [PATCH v2 2/4] xfsprogs: fix integer overflow in xlog_find_verify_cycle Vivek Trivedi
2015-12-20 15:35 ` Christoph Hellwig
2015-12-20 23:45 ` Dave Chinner [this message]
2015-12-11 11:09 ` [PATCH v2 3/4] xfsprogs: mkfs: fix unintentional integer overflow Vivek Trivedi
2015-12-20 15:36 ` Christoph Hellwig
2015-12-20 23:51 ` Dave Chinner
2015-12-11 11:09 ` [PATCH v2 4/4] xfsprogs: xfsdb: remove unnessary checks in process_leaf_node_dir_v2_free Vivek Trivedi
2015-12-20 15:37 ` Christoph Hellwig
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=20151220234520.GU26718@dastard \
--to=david@fromorbit.com \
--cc=a.sahrawat@samsung.com \
--cc=hch@infradead.org \
--cc=pankaj.m@samsung.com \
--cc=t.vivek@samsung.com \
--cc=xfs@oss.sgi.com \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.