Re: 3.14-rc2 XFS backtrace because irqs_disabled.

Dave Jones
2014-02-12T05:50:41Z

On Wed, Feb 12, 2014 at 04:40:43PM +1100, Dave Chinner wrote:

> None of the XFS code disables interrupts in that path, not does is
> call outside XFS except to dispatch IO. The stack is pretty deep at
> this point and I know that the standard (non stacked) IO stack can
> consume >3kb of stack space when it gets down to having to do memory
> reclaim during GFP_NOIO allocation at the lowest level of SCSI
> drivers. Stack overruns typically show up with symptoms like we are
> seeing.
> ..
>
> Dave, before chasing ghosts, can you (like Eric originally asked)
> turn on stack overrun detection?

CONFIG_DEBUG_STACKOVERFLOW ? Already turned on.

Dave