Re: [PATCH] opensmtpd: Fix crash during authentication

[Adam Zimmerman <adam@digitalpirate.ca>]

On 2018-06-12 10:46 AM, Clément Lassieur wrote:
> Clément Lassieur <clement@lassieur.org> writes:
> 
>> Hi Adam,
>>
>> Adam Zimmerman <adam@digitalpirate.ca> writes:
>>
>>> Hi all,
>>>
>>> I'm running a mail server that I recently migrated to GuixSD, and I
>>> found this issue when trying to get opensmtpd set up.
>>>
>>> When using authentication from a table, opensmtpd would crash whenever I
>>> tried to authenticate. I found this patch which fixes the issue. It's
>>> already been merged into the opensmtpd master branch[1], and will be
>>> fixed in the next release which apparently will be around
>>> October/November this year.
>>>
>>> [1] https://github.com/OpenSMTPD/OpenSMTPD/pull/835
> 
> This person [1] says that it can only be reproduced if linking with -pie
> / configuring with --with-pie.  It doesn't seem to me our case.
> 
> [1] https://github.com/OpenSMTPD/OpenSMTPD/issues/833#issuecomment-367368007
> 

Very strange, since I only became aware of the issue after running into
it on GuixSD (I was using Ubuntu/Postfix before). And applying the patch
definitely fixed the problem for me. So weird...