linux-kernel - Re: [PATCH] rpmsg: char: release allocated memory

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Message-ID: <CAEkB2ERykJBh0V7vVVUtBT-yXpdvNap_NTAEuShDBb+hX69ObA@mail.gmail.com>
Date:   Thu, 21 Nov 2019 17:54:11 -0600
From:   Navid Emamdoost <navid.emamdoost@...il.com>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     Ohad Ben-Cohen <ohad@...ery.com>, linux-remoteproc@...r.kernel.org,
        Navid Emamdoost <emamd001@....edu>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] rpmsg: char: release allocated memory

Thanks for the update.

On Thu, Nov 21, 2019 at 5:35 PM Bjorn Andersson
<bjorn.andersson@...aro.org> wrote:
>
> On Thu 21 Nov 10:20 PST 2019, Navid Emamdoost wrote:
>
> > On Mon, Sep 16, 2019 at 10:31 PM Navid Emamdoost
> > <navid.emamdoost@...il.com> wrote:
> > >
> > > In rpmsg_eptdev_write_iter, if copy_from_iter_full fails the allocated
> > > buffer needs to be released.
> > >
> > > Signed-off-by: Navid Emamdoost <navid.emamdoost@...il.com>
> >
> > Would you please review this patch?
> >
>
> I'm sorry, I must have missed to reply as I applied the patch. You can
> find it in the rpmsg-next branch [1] and it will be part of the pull
> request for v5.5
>
> [1] https://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc.git/log/?h=rpmsg-next
>
> Regards,
> Bjorn
>
> > Thank you,
> >
> > > ---
> > >  drivers/rpmsg/rpmsg_char.c | 6 ++++--
> > >  1 file changed, 4 insertions(+), 2 deletions(-)
> > >
> > > diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c
> > > index eea5ebbb5119..c655074c07c2 100644
> > > --- a/drivers/rpmsg/rpmsg_char.c
> > > +++ b/drivers/rpmsg/rpmsg_char.c
> > > @@ -227,8 +227,10 @@ static ssize_t rpmsg_eptdev_write_iter(struct kiocb *iocb,
> > >         if (!kbuf)
> > >                 return -ENOMEM;
> > >
> > > -       if (!copy_from_iter_full(kbuf, len, from))
> > > -               return -EFAULT;
> > > +       if (!copy_from_iter_full(kbuf, len, from)) {
> > > +               ret = -EFAULT;
> > > +               goto free_kbuf;
> > > +       }
> > >
> > >         if (mutex_lock_interruptible(&eptdev->ept_lock)) {
> > >                 ret = -ERESTARTSYS;
> > > --
> > > 2.17.1
> > >
> >
> >
> > --
> > Navid.



-- 
Navid.