glibc 2.14-4 eats my data (Re: F15 ext3, eCryptfs + samba = data corruption (Re: F15 "Error mounting eCryptfs: [-5] Input/output error" on different disks))

[Michał Piotrowski]

W dniu 11 lipca 2011 17:57 użytkownik Michal Hlavinka
<mhlavink at redhat.com> napisał:
> On 07/11/2011 05:40 PM, Michał Piotrowski wrote:
>>
>> Hi,
>>
>> W dniu 11 lipca 2011 17:09 użytkownik Michal Hlavinka
>> <mhlavink at redhat.com>  napisał:
>>>
>>> ok, complain about memcpy in ecryptfs-utils is gone. I've checked all of
>>> them and I think I've fixed those which needed it. I was not able to
>>> reproduce original problem nor valgrind complaint, so please test if
>>> following package produces memcpy complain in valgrind output or not:
>>>
>>> http://kojipkgs.fedoraproject.org/scratch/mhlavink/task_3190860/
>>
>> Your mtab handling patch fixed both issues - mount warning and data
>> corruption :) Huge thanks!
>
> I can't imagine *how* it could affect this, so I'd advice to monitor it
> carefully if it is fixed for real.

Ok, so I will do. Before each time I mounted ecryptfs I get this
"Error mounting eCryptfs: [-5] Input/output error" error. Now it's
gone - I tried a few times.

> Btw, there is not only mtab patch, but 2x
> memcpy -> memmove too, just not all of them as in previous test package
> (which did not help).
>
>>> Could you describe your environment in more details so we can try to
>>> reproduce it? For example what ecryptfs options you use (including fstab
>>> line if you have any), samba configuration etc...
>>
>> I do not think that it had any significance - it seems to me that
>> these options are pretty standard
>> mount -t ecryptfs /home/$SHARE/ /home/$SHARE/ -o
>>
>> key=passphrase,ecryptfs_cipher=aes,ecryptfs_key_bytes=16,ecryptfs_passthrough=n,ecryptfs_fnek_sig=some_value
>>
>> It's a little strange that you could not reproduce that mount warning.
>
> AFAIK that memcpy warning from valgrind gets triggered only if you use
> "correct" -o ... option
>
>



-- 
Best regards,
Michal

http://eventhorizon.pl/