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 3/4] xfsprogs: mkfs: fix unintentional integer overflow
Date: Mon, 21 Dec 2015 10:51:01 +1100 [thread overview]
Message-ID: <20151220235101.GW26718@dastard> (raw)
In-Reply-To: <20151220153649.GE20135@infradead.org>
On Sun, Dec 20, 2015 at 07:36:49AM -0800, Christoph Hellwig wrote:
> > +++ b/mkfs/xfs_mkfs.c
> > @@ -2022,7 +2022,7 @@ _("warning: sparse inodes not supported without CRC support, disabled.\n"));
> > * and the underlying volume is striped, then set rtextblocks
> > * to the stripe width.
> > */
> > - int rswidth;
> > + __uint64_t rswidth;
> > __uint64_t rtextbytes;
>
> This looks odd. We initiallize assigned ft.rtswidth (which is an int)
> or 0 to it. I think you want a separate variable for the result of
> the DTOBT(rswidth) statement to make this clear.
I don't see any point in doing that. It really doesn't matter that
the variable it is initialised from is only a 32 bit int, and having
yet another variable in mkfs is not going to make the code easier to
understand...
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
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next prev parent reply other threads:[~2015-12-20 23:51 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
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 [this message]
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
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