linux-kernel - Re: KASAN: use-after-free Read in binder_release

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Message-ID: <CAB0TPYGxrDF+egw9GUXhWaDnj6wkH8gKd=htyujUH4jzwSE8zA@mail.gmail.com>
Date:   Mon, 23 Apr 2018 12:00:32 +0200
From:   Martijn Coenen <maco@...roid.com>
To:     Dmitry Vyukov <dvyukov@...gle.com>
Cc:     Eric Biggers <ebiggers3@...il.com>,
        Arve Hjønnevåg <arve@...roid.com>,
        "open list:ANDROID DRIVERS" <devel@...verdev.osuosl.org>,
        Greg KH <gregkh@...uxfoundation.org>,
        LKML <linux-kernel@...r.kernel.org>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>,
        Todd Kjos <tkjos@...roid.com>,
        syzbot <syzbot+0cf1f1aa154f56ff2e8d@...kaller.appspotmail.com>
Subject: Re: KASAN: use-after-free Read in binder_release_work

On Mon, Apr 23, 2018 at 11:49 AM, Dmitry Vyukov <dvyukov@...gle.com> wrote:
> Since it's already in Greg's queue, it's not worth bothering. We can
> fix up things here with these "#syz fix" tags in emails, which
> associate fixes with bugs.

I meant, when I sent the original patch a month or so ago, could
syzbot have replied saying "The reported-by tag you used belongs to a
bug that was already marked as closed by this other commit?".

>
>
>> Thanks,
>> Martijn
>>
>>> Now syzbot already skips list_del frame and takes the next one, so it
>>> should become slightly better.
>>>
>>> Let's close this one with the binder fix (since that one was closed
>>> with an rdma fix):
>>>
>>> #syz fix: ANDROID: binder: prevent transactions into own process.