Re: [PATH v2] NVMe: init nvme queue before enabling irq

[Jens Axboe]

On 01/20/2016 10:12 AM, Greg KH wrote:
> On Wed, Jan 20, 2016 at 05:48:35AM -0500, Wenbo Wang wrote:
> > From: Wenbo Wang <wenbo.wang@xxxxxxxxxxxx>
> >
> > During reset process, the nvme_dev->bar (ioremapped) may change,
> > so nvmeq->q_db shall be also updated by nvme_init_queue().
> >
> > Currently nvmeq irq is enabled before queue init, so a spurious
> > interrupt triggered nvme_process_cq may access nvmeq->q_db just
> > before it is updated, this could cause kernel panic.
> >
> > Signed-off-by: Wenbo Wang <wenbo.wang@xxxxxxxxxxxx>
> > Reviewed-by: Wenwei Tao <wenwei.tao@xxxxxxxxxxxx>
> > ---
> >   drivers/nvme/host/pci.c | 14 +++++++++-----
> >   1 file changed, 9 insertions(+), 5 deletions(-)
>
> <formletter>
>
> This is not the correct way to submit patches for inclusion in the
> stable kernel tree.  Please read Documentation/stable_kernel_rules.txt
> for how to do this properly.

I'll mark it stable when adding, just ignore it for now.

--
Jens Axboe