Re: [bug report] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000058

Re: [bug report] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000058

[Ming Lei]

Hi Greg,

On Tue, Dec 27, 2022 at 04:00:37PM +0800, Ming Lei wrote:
> Hi Changhui,
> 
> On Mon, Dec 26, 2022 at 11:11:44AM +0800, Changhui Zhong wrote:
> > Hello,
> > Below issue was triggered with ( v6.0.15-996-g988abd970566), pls help check it
> 
> There isn't commit 988abd970566 in linux-6.0.y, so I guess the above
> build must integrate other patches not in 6.0.y
> 
> From the source code in cki build[1], looks commit 80bd4a7aab4c ("blk-mq: move
> the srcu_struct used for quiescing to the tagset") is included, but
> commit 8537380bb988 ("blk-mq: skip non-mq queues in blk_mq_quiesce_queue")
> is missed, that is why this panic is triggered.

I just found that patch of blk-mq-move-the-srcu_struct-used-for-quiescing-to-th.patch
is queued in stable-queue/queue-6.0, but that patch depends on
commit 8537380bb988 ("blk-mq: skip non-mq queues in blk_mq_quiesce_queue").
which needs to be added to queue-6.0 too.


Thanks,
Ming