Re: [PATCH -next v2 2/2] md/raid5-cache: fix null-ptr-deref in r5l_reclaim_thread()

[Song Liu]

On Fri, Jul 7, 2023 at 5:19 PM Yu Kuai <yukuai1@xxxxxxxxxxxxxxx> wrote:
>
> Hi,
>
> 在 2023/07/07 17:16, Yu Kuai 写道:
> > Perhaps you means this order?
> >
> > r5l_exit_log
> >   flush_work(&log->disable_writeback_work)
> >   conf->log = NULL
> >   md_unregister_thread(&log->reclaim_thread)
> >
> > I think this is better indeed.
> Never mind, this is wrong, I got confused...
>
> Please ignore this and take a look at my original fix.

How about

r5l_exit_log
  md_unregister_thread(&log->reclaim_thread)
  conf->log = NULL
  flush_work(&log->disable_writeback_work)

?

Thanks,
Song