[Bug 242448] Re: Hardy ecryptfs can cause data loss

Serge Hallyn serge.hallyn at gmail.com
Thu Aug 28 19:27:21 UTC 2008


I am not running intrepid, I'm running hardy.  Attempts to create an intrepid
kvm image failed (funky mouse behavior).

I wonder whether this comment was sent to the wrong bug?  This bug was
pertaining to the 2.6.24 kernel on hardy only, since the bug had been fixed
separately upstream in 2.6.26.

thanks,
-serge

On Thu, Aug 28, 2008 at 1:25 PM, Leann Ogasawara <leann at ubuntu.com> wrote:
> The Ubuntu Kernel Team is planning to move to the 2.6.27 kernel for the
> upcoming Intrepid Ibex 8.10 release.  As a result, the kernel team would
> appreciate it if you could please test this newer 2.6.27 Ubuntu kernel.
> There are one of two ways you should be able to test:
>
> 1)  If you are comfortable installing packages on your own, the linux-
> image-2.6.27-* package is currently available for you to install and
> test.
>
> --or--
>
> 2)  The upcoming Alpha5 for Intrepid Ibex 8.10 will contain this newer
> 2.6.27 Ubuntu kernel.  Alpha5 is set to be released Thursday Sept 4.
> Please watch http://www.ubuntu.com/testing for Alpha5 to be announced.
> You should then be able to test via a LiveCD.
>
> Please let us know immediately if this newer 2.6.27 kernel resolves the
> bug reported here or if the issue remains.  More importantly, please
> open a new bug report for each new bug/regression introduced by the
> 2.6.27 kernel and tag the bug report with 'linux-2.6.27'.  Also, please
> specifically note if the issue does or does not appear in the 2.6.26
> kernel.  Thanks again, we really appreicate your help and feedback.
>
> ** Tags added: cft-2.6.27
>
> --
> Hardy ecryptfs can cause data loss
> https://bugs.launchpad.net/bugs/242448
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in The Linux Kernel: Unknown
> Status in "linux" source package in Ubuntu: Confirmed
> Status in linux in Ubuntu Hardy: Fix Committed
>
> Bug description:
> This bug can cause data loss on an ecryptfs mounted filesystem.
>
> The test case looks like this:
>
> # mkdir /tmp/dir1 /tmp/dir2
> # mount -t ecryptfs /tmp/dir1 /tmp/dir2
> (any ecryptfs mount options are fine, choose defaults)
> # cp /usr/share/common-licenses/GPL-3 /tmp/dir2
> # umount /tmp/dir2
> # mount -t ecryptfs /tmp/dir1 /tmp/dir2
> (choose same options/passphrase as last mount)
> # echo foo >> /tmp/dir2/GPL-3
> # tail /tmp/dir2/GPL-3
> # reset
>
> You will see badly decrypted data printed to screen, whereas you should see the GPLv3 plus "foo" printed to screen.  The data in this file is permanently hosed.
>
> The fix for this bug was applied upstream against 2.6.26, and is already in the intrepid kernel.
>
> The git commit diff can be seen here:
>  * http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-intrepid.git;a=commitdiff;h=d3e49afbb66109613c3474f2273f5830ac2dcb09
>
> I will gladly test a new Hardy kernel as soon as it becomes available.
>
> :-Dustin
>

-- 
Hardy ecryptfs can cause data loss
https://bugs.launchpad.net/bugs/242448
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