From: Dmitry Vyukov <dvyukov@google.com>
To: Martijn Coenen <maco@android.com>
Cc: "open list:ANDROID DRIVERS" <devel@driverdev.osuosl.org>,
"Todd Kjos" <tkjos@android.com>,
"Greg KH" <gregkh@linuxfoundation.org>,
"Eric Biggers" <ebiggers3@gmail.com>,
syzkaller-bugs <syzkaller-bugs@googlegroups.com>,
LKML <linux-kernel@vger.kernel.org>,
"Arve Hjønnevåg" <arve@android.com>,
syzbot <syzbot+0cf1f1aa154f56ff2e8d@syzkaller.appspotmail.com>
Subject: Re: KASAN: use-after-free Read in binder_release_work
Date: Mon, 23 Apr 2018 11:49:48 +0200 [thread overview]
Message-ID: <CACT4Y+Y6cOgF4+TnFuU6NO8-ycpmo5=Ma-Dg+nAp71iTK64-Lw@mail.gmail.com> (raw)
In-Reply-To: <CAB0TPYHLxjfmisvmVLOw+6XjV+mt=buZPJFCpg44JZpGimjLjw@mail.gmail.com>
On Mon, Apr 23, 2018 at 11:41 AM, Martijn Coenen <maco@android.com> wrote:
> On Mon, Apr 23, 2018 at 11:28 AM, Dmitry Vyukov <dvyukov@google.com> wrote:
>> https://syzkaller.appspot.com/bug?extid=09e05aba06723a94d43d
>> and that happened in binder. But then syzkaller found a reproducer for
>> it, but it turned out to be in rdma subsystem. It's generally not
>> possible to properly distinguish different bugs that look similar, and
>> if syzbot does more sensitive bug classification, then it will also
>> inevitably report more duplicates. So that bug was closed as an rdma
>> bug.
>
> Thanks for the clarification! It looks like I sent the patch with the
> original reported-by tag after it was closed as an rdma issue; would
> it help if syzbot sent a reply saying this bug was already marked as
> closed with a different commit, or are there other complications with
> that?
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.
> 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.
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next prev parent reply other threads:[~2018-04-23 9:49 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-04 3:02 KASAN: use-after-free Read in binder_release_work syzbot
2018-04-19 21:35 ` Eric Biggers
2018-04-23 9:18 ` Martijn Coenen
2018-04-23 9:28 ` Dmitry Vyukov
2018-04-23 9:41 ` Martijn Coenen
2018-04-23 9:49 ` Dmitry Vyukov [this message]
2018-04-23 10:00 ` Martijn Coenen
2018-04-23 10:17 ` Dmitry Vyukov
2018-04-23 13:28 ` Martijn Coenen
2018-04-23 13:46 ` Dmitry Vyukov
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