linux-kernel - Re: KASAN: null-ptr-deref Write in binder_update_page

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Message-ID: <20180824003630.GB15746@rodete-laptop-imager.corp.google.com>
Date:   Fri, 24 Aug 2018 09:36:30 +0900
From:   Minchan Kim <minchan@...nel.org>
To:     "Dae R. Jeong" <threeearcat@...il.com>
Cc:     gregkh@...uxfoundation.org, arve@...roid.com, tkjos@...roid.com,
        maco@...roid.com, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: Re: KASAN: null-ptr-deref Write in binder_update_page_range

On Thu, Aug 23, 2018 at 07:03:34PM +0900, Dae R. Jeong wrote:
> > Could you test this patch? I found that bug a month ago but didn't submit
> > yet.
> 
> I don't have a reproducer now. I manually analzed a root cause of the
> crash using a fuzzer's log. The log reported a race on 'alloc->vma'.
> Because I don't have a reproducer, I can't test the patch. I'm sorry.

Ah, Okay. Anyway, one of author for the patch is already binder maintainer.
If other maintainers don't object it, let's fix the race in this chance.

Thanks.