Re: [PATCH 2/2] livepatch: Use correct kobject cleanup function

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On Tue, Apr 30, 2019 at 01:00:05PM +0200, Miroslav Benes wrote:
> On Tue, 30 Apr 2019, Tobin C. Harding wrote:
> 
> > The correct cleanup function after a call to kobject_init_and_add() has
> > succeeded is kobject_del() _not_ kobject_put().  kobject_del() calls
> > kobject_put().
> > 
> > Use correct cleanup function when removing a kobject.
> > 
> > Signed-off-by: Tobin C. Harding <tobin@xxxxxxxxxx>
> > ---
> >  kernel/livepatch/core.c | 8 +++-----
> >  1 file changed, 3 insertions(+), 5 deletions(-)
> > 
> > diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c
> > index 98a7bec41faa..4cce6bb6e073 100644
> > --- a/kernel/livepatch/core.c
> > +++ b/kernel/livepatch/core.c
> > @@ -589,9 +589,8 @@ static void __klp_free_funcs(struct klp_object *obj, bool nops_only)
> >  
> >  		list_del(&func->node);
> >  
> > -		/* Might be called from klp_init_patch() error path. */
> 
> Could you leave the comment as is? If I am not mistaken, it is still 
> valid. func->kobj_added check is here exactly because the function may be 
> called as mentioned.

Will put it back in for you on v2

thanks,
Tobin.



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