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Date:   Wed, 15 Aug 2018 10:11:20 +1000
From:   Stephen Rothwell <sfr@canb.auug.org.au>
To:     Dmitry Vyukov <dvyukov@google.com>
Cc:     "J. Bruce Fields" <bfields@fieldses.org>,
        syzbot <syzbot+1f371ca19b341a276761@syzkaller.appspotmail.com>,
        jlayton@kernel.org, linux-fsdevel <linux-fsdevel@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>,
        syzkaller-bugs <syzkaller-bugs@googlegroups.com>,
        Al Viro <viro@zeniv.linux.org.uk>
Subject: Re: general protection fault in send_sigurg_to_task
Message-ID: <20180815101120.019f069e@canb.auug.org.au>
In-Reply-To: <CACT4Y+YujnbvrgRU6xc+=8rHLctrjQbRP+wq-08UmbH_oOfAKA@mail.gmail.com>
References: <0000000000007f59610573509684@google.com>
        <000000000000f4136d0573512103@google.com>
        <20180814191129.GN7906@fieldses.org>
        <CACT4Y+YujnbvrgRU6xc+=8rHLctrjQbRP+wq-08UmbH_oOfAKA@mail.gmail.com>
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Hi Bruce,

On Tue, 14 Aug 2018 13:50:20 -0700 Dmitry Vyukov <dvyukov@google.com> wrote:
>
> On Tue, Aug 14, 2018 at 12:11 PM, J. Bruce Fields <bfields@fieldses.org> =
wrote:
> > On Mon, Aug 13, 2018 at 06:33:02AM -0700, syzbot wrote: =20
> >> syzbot has found a reproducer for the following crash on:
> >>
> >> HEAD commit:    5ed5da74de9e Add linux-next specific files for 20180813
> >> git tree:       linux-next =20
> >
> > I fetched linux-next but don't have 5ed5da74de9e. =20
>=20
> +Stephen for the disappeared linux-next commit.

That is just the HEAD commit on linux-next that day.  If you fetched
linux-next after I released next-20180814 yesterday, then it would have
a different HEAD commit.  If you check out the tag next-20180813, you
will get the above HEAD commit.

> On the dashboard link you can see that it also happened on a more
> recent commit 4e8b38549b50459a22573d756dd1f4e1963c2a8d that I do see
> now in linux-next.

Which is just the HEAD commit of next-20180814.

Linux-next is rebuilt every day based on Linus' tree of the day,
followed by merging all the other branches, so its HEAD is different
every day.
--=20
Cheers,
Stephen Rothwell

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