Possible bug in NFSv4 with krb5p security?

[Rick Macklem]

Elias Martenson wrote:
> Thank you for your help. I'm currently in the process of analysing
> what is happening inside gssd during these operations. I'll get back
> later with a summary of my findings.
> 
> 
> However, I have found a real bug this time. An honest to FSM kernel
> crash. This is how I reproduced it:
> 
> 
> - Kill gssd
> - Attempt to mount a kerberised NFS mount from the Linux machine
> - The mount attempt will hang because gssd isn't running
> - While the mount is hung, start gssd
> - Kernel crash
> 
> 
> What should I do about that one?
> 
There was a patch applied to head about 2 months ago (r244370) to
stop crashes when the gssd was restarted. The patch is also here:
 http://people.freebsd.org/~rmacklem/kgssapi.patch

I don't remember if you mentioned which kernel version you are
running, but this would also be in stable/9 of about 6 weeks ago,
but not in 9.1-release.

If your system has this patch and still crashes, please email
the backtrace for the crash. You can take a photo of it, if it
is a screen console.

rick

> 
> Regards,
> Elias