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

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Message-ID: <CACT4Y+ZLEPummCf==B30ucY8cdoOx8FWohnUn_UMoWmwwTL87g@mail.gmail.com>
Date:   Wed, 13 Feb 2019 09:27:56 +0100
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
Cc:     syzbot <syzbot+7823fa3f3e2d69341ea8@...kaller.appspotmail.com>,
        David Miller <davem@...emloft.net>,
        LKML <linux-kernel@...r.kernel.org>, linux-sctp@...r.kernel.org,
        netdev <netdev@...r.kernel.org>,
        Neil Horman <nhorman@...driver.com>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>,
        Vladislav Yasevich <vyasevich@...il.com>
Subject: Re: KASAN: use-after-free Read in sctp_outq_tail

On Tue, Feb 12, 2019 at 8:19 PM Marcelo Ricardo Leitner
<marcelo.leitner@...il.com> wrote:
>
> On Tue, Feb 12, 2019 at 11:04:27AM -0800, syzbot wrote:
> > Hello,
> >
> > syzbot found the following crash on:
> >
> > HEAD commit:    d4104460aec1 Add linux-next specific files for 20190211
> > git tree:       linux-next
>
> I can't find this commit. How can I know for sure which commits are in?
> Recent patches are involved with this code, but not sure what was
> included on the test.

Hi Marcelo,

linux-next is weird. Not sure why a so recent commit is not in
linux-next, maybe one needs to fetch tags or something. Fetching
git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next-history.git
helped me to get this commit:

$ git show d4104460aec1
commit d4104460aec152e23cf80ab1f950f414bf94f4ea (HEAD, tag: next-20190211)
Author: Stephen Rothwell
Date:   Mon Feb 11 18:37:26 2019 +1100
    Add linux-next specific files for 20190211