Re: [PATCH] libmultipath: fix memory leak in checker_cleanup_thread

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On Fri, 2021-04-09 at 09:59 -0500, Benjamin Marzinski wrote:
> On Fri, Apr 09, 2021 at 03:15:05PM +0800, lixiaokeng wrote:
> > If checker_cleanup_thread is called after cleanup_checkers,
> > the checker_class will not be freed.
> > 
> > Here, we use free_checker_class instead of checker_class_unref
> > in checker_cleanup_thread.
> > 
> > Signed-off-by: Lixiaokeng <lixiaokeng@xxxxxxxxxx>
> > ---
> >  libmultipath/checkers.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/libmultipath/checkers.c b/libmultipath/checkers.c
> > index 2dd9915d..7cc80f0b 100644
> > --- a/libmultipath/checkers.c
> > +++ b/libmultipath/checkers.c
> > @@ -368,7 +368,7 @@ static void checker_cleanup_thread(void *arg)
> >  {
> >         struct checker_class *cls = arg;
> > 
> > -       (void)checker_class_unref(cls);
> > +       (void)free_checker_class(cls);
> >         rcu_unregister_thread();
> >  }
> > 
> > -- 
> 
> Reviewed-by: Benjamin Marzinski <bmarzins@xxxxxxxxxx>
> 

Nit: The cast to void is wrong, as free_checker_class() is a void
function anyway. I'll take the freedom to remove it when I apply this
to the "queue" branch.

Thanks,
Martin

Reviewed-by: Martin Wilck <mwilck@xxxxxxxx>






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