Re: zfs crash on amd64

[Adam Hamsik <haaaad%gmail.com@localhost>]

Hi,
On Nov,Monday 2 2009, at 9:10 AM, Adam Hamsik wrote:

> Hi folks,
>
> I would like to ask you for a help with one strange issue on a amd64  
> with a zfs. On amd64 zfs panics during zpool create. Backtrace +  
> panic message can be found here[1]. I got several other panics 
> (different backtrace) but most of them was somewhat related with  
> SHA256Transform.
>
> I have added some printfs to the zio_checksum_SHA256 and everything  
> looks fine, but when panic happens H[0] is NULL. I'm really not sure  
> how is this possible, but I have checked it twice. PAnic happens  
> here [2]. Panic instruction is this

I have tried to increase USPACE to 8 and it doesn't helped. I wonder  
if problem can be in a stack size of a kernel thread for a taskq.  
Because panic happens in taskq kthread. What/where is default kthread  
stack size defined or does it have it's own stack ?

Regards

Adam.