linux-kernel - Re: BUG: unable to handle kernel paging request in ipcget

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Message-ID: <CACT4Y+Yit=fJrhDNo5TtUQYMuGrO7QBdTZHhmsvpxZO+7PKJAw@mail.gmail.com>
Date:   Sat, 23 Dec 2017 11:07:24 +0100
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     Manfred Spraul <manfred@...orfullife.com>
Cc:     syzbot 
        <bot+362ae63b121c06066d2b6e1385d38efecbeca4f6@...kaller.appspotmail.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Davidlohr Bueso <dave@...olabs.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        guillaume.knispel@...ersonicimagine.com,
        Kees Cook <keescook@...omium.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Michal Hocko <mhocko@...e.com>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        syzkaller-bugs@...glegroups.com,
        syzkaller <syzkaller@...glegroups.com>
Subject: Re: BUG: unable to handle kernel paging request in ipcget

On Sat, Dec 23, 2017 at 10:59 AM, Manfred Spraul
<manfred@...orfullife.com> wrote:
> Hi,
>
> On 12/23/2017 08:33 AM, syzbot wrote:
>>
>> Hello,
>>
>> syzkaller hit the following crash on
>> 6084b576dca2e898f5c101baef151f7bfdbb606d
>> git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/master
>> compiler: gcc (GCC) 7.1.1 20170620
>> .config is attached
>> Raw console output is attached.
>>
>> Unfortunately, I don't have any reproducer for this bug yet.
>>
> Is one of the recent issues reproducible?

Which one do you mean?
syzbot always provides up-to-date status of reproducers for all reported bugs.

> Either something is wrong with the faster ipc_get, or the improved ipc_get
> makes issues in other areas visible.
>
> --
>     Manfred
>
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