linux-kernel - Re: [PATCH] eCryptfs: infinite loop bug

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Date:	Thu, 19 Jan 2012 09:08:18 -0600
From:	Tyler Hicks <tyhicks@...onical.com>
To:	Dustin Kirkland <dustin.kirkland@...zang.com>
Cc:	Li Wang <liwang@...t.edu.cn>, ecryptfs@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	Cong Wang <xiyou.wangcong@...il.com>
Subject: Re: [PATCH] eCryptfs: infinite loop bug

On 2012-01-19 08:03:57, Dustin Kirkland wrote:
> On Thu, Jan 19, 2012 at 2:48 AM, Tyler Hicks <tyhicks@...onical.com> wrote:
> > On 2012-01-19 09:44:36, Li Wang wrote:
> >>
> >>
> >> Hi,
> >>   Thanks Cong Wang for the kind reminding regarding the patch format.
> >
> > The commit message still needs some work. But there's no need to drag
> > out the process for a fix like this, so I'll rewrite the commit message
> > and reply to this email with the cleaned up version. Let me know if you
> > have any problems with that. You'll still be credited as the author.
> >
> > For future kernel patches, please see "15) The canonical patch format"
> > of Documentation/SubmittingPatches and "5.4: PATCH FORMATTING AND
> > CHANGELOGS" of Documentation/development-process/5.Posting for more
> > information on how the commit message should be written.
> >
> > Also, your email came across in base64 encoding. I'm not sure of the
> > reason for that or how to fix it.
> >
> >>   We did notice that the total_remaining_zeroes need be revised as well,
> >> and the start_offset_in_page, num_bytes need not be revised (always smaller
> >
> > Yes, size_t will work fine, as Linus confirmed.
> >
> >> than PAGE_CACHE_SIZE, even the huge page size is supported,
> >> the 4G page size is not present in the current world?)
> >> but we forget to include the revision for total_remaining_zeroes, so here comes the patch.
> >
> > I really appreciate the patch - thanks!
> 
> Tyler,
> 
> Is this the problem behind our long standing
> tor-download-on-ecryptfs-hangs-cpu bug?
>  * https://bugs.launchpad.net/ecryptfs/+bug/431975

Yes. Unfortunately, I had missed the infinite loop on i386 part, as I
was testing/developing on x86_64. 

Tyler

> 
> -- 
> :-Dustin
> 
> Dustin Kirkland
> Chief Architect
> Gazzang, Inc.
> www.gazzang.com
> --
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