linux-kernel - Re: [PATCH v3 1/1] kasan: fix object remain in offline per-cpu quarantine

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Date:   Thu, 3 Dec 2020 12:28:54 -0800
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Andrey Konovalov <andreyknvl@...gle.com>
Cc:     Kuan-Ying Lee <Kuan-Ying.Lee@...iatek.com>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Alexander Potapenko <glider@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Nicholas Tang <nicholas.tang@...iatek.com>,
        Miles Chen <miles.chen@...iatek.com>,
        kasan-dev <kasan-dev@...glegroups.com>,
        Linux Memory Management List <linux-mm@...ck.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        linux-mediatek@...ts.infradead.org,
        wsd_upstream <wsd_upstream@...iatek.com>
Subject: Re: [PATCH v3 1/1] kasan: fix object remain in offline per-cpu
 quarantine

On Thu, 3 Dec 2020 13:46:59 +0100 Andrey Konovalov <andreyknvl@...gle.com> wrote:

> >  #define QLIST_INIT { NULL, NULL, 0 }
> > @@ -188,6 +190,11 @@ void quarantine_put(struct kasan_free_meta *info, struct kmem_cache *cache)
> >         local_irq_save(flags);
> >
> >         q = this_cpu_ptr(&cpu_quarantine);
> > +       if (q->offline) {
> > +               qlink_free(&info->quarantine_link, cache);
> 
> Hi Kuan-Ying,
> 
> This needs to be rebased onto the mm tree: it has some KASAN patches
> that touch this code and rename the info variable to meta.

Yup.  I'm taking care of that.