This test exposed a race condiiton when shutting down a request_queue
with active IO against it and blkg association for the IOs [1]. The
issue ended up being that while the request_queue will just start
failing requests, blkg destruction sets the q->root_blkg to %NULL. This
caused a NPE. This was
On Thu, Dec 13, 2018 at 09:24:09AM +0800, Ming Lei wrote:
> On Wed, Dec 12, 2018 at 06:09:59PM -0500, Dennis Zhou wrote:
> > This test exposed a race condition with shutting down a request_queue
> > and the new blkg association. The issue ended up being that while the
> > request_queue will just st
On Wed, Dec 12, 2018 at 06:09:59PM -0500, Dennis Zhou wrote:
> This test exposed a race condition with shutting down a request_queue
> and the new blkg association. The issue ended up being that while the
> request_queue will just start failing requests, blkg destruction sets
> the q->root_blkg to
This test exposed a race condition with shutting down a request_queue
and the new blkg association. The issue ended up being that while the
request_queue will just start failing requests, blkg destruction sets
the q->root_blkg to %NULL. This caused a NPE when trying to reference
it. So to help prev
