Re: [9fans] authentication fails strangely after changing password

["Sean Caron" <scaron@umich.edu>]

hi again,

sorry for asking without experimenting first. and doubly so for replying
to my own message.

for the archives' sake, just wanted to say: i just blew away the nvram

echo blah > /dev/sdC0/nvram

then rebooted the system; respecified auth information when prompted.

then used auth/changeuser to reset passwords for bootes and myself

i'd hate to do it for hundreds of users but it did the trick for me.

best,

-sean

On Wed, 22 Apr 2009 18:24:59 -0400, Sean Caron <scaron@umich.edu> wrote:

>
> hi folks,
>
> i needed to change my password today. i logged in to my plan 9 box using
> drawterm
> and used 'passwd' to change the password for my account, scaron, and got
> on the
> system console and used 'passwd' to change the password for bootes.
>
> didn't get any errors when changing the password; it all seemed to 'take'
>
> now, when i connect to my system via drawterm and log in, i get
> something like
> this:
>
> user: scaron
> scaron@diablonet.net password: ((type it))
> \n : server says: cpu: srvauth: auth_proxy rpc write: ((garbage))
>
> goodbye
>
> or some variant on this. then it drops me. it seems to be exhibiting
> this behaviour
> for both my user and the bootes user with 100% consistency.
>
> looks like a buffer overflow somewhere.
>
> nothing changed besides my password and that of the bootes user.
>
> this system hasn't pull'd any updates in a while (maybe like a year..)
>
> is there anything i can do to rescue this or do i just need to blow the
> system
> away and start over?
>
> thanks,
>
> -sean
>
>