linux-kernel - Re: possible deadlock in shmem_file

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Message-ID: <CACT4Y+aRpitnB_0JFNAyLVzbZnGSx+vNCOig3XiLL7dV988XWw@mail.gmail.com>
Date:   Wed, 24 Jan 2018 19:43:51 +0100
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     syzbot <syzbot+8ec30bb7bf1a981a2012@...kaller.appspotmail.com>
Cc:     arve@...roid.com, devel@...verdev.osuosl.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Hugh Dickins <hughd@...gle.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux-MM <linux-mm@...ck.org>, maco@...roid.com,
        syzkaller-bugs@...glegroups.com, tkjos@...roid.com
Subject: Re: possible deadlock in shmem_file_llseek

On Wed, Jan 24, 2018 at 7:42 PM, syzbot
<syzbot+8ec30bb7bf1a981a2012@...kaller.appspotmail.com> wrote:
> Hello,
>
> syzbot tried to test the proposed patch but build/boot failed:
>
> patch is already applied
>
>
> Tested on https://github.com/joelagnel/linux.git/test-ashmem commit
> 32f813bb0d06c1e189ac336f8c3c7377f85c71f0 (Wed Jan 24 01:45:04 2018 +0000)
> ashmem: Fix lockdep issue during llseek
>
> compiler: gcc (GCC) 7.1.1 20170620
> Patch is attached.

Right. We probably want:

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master

Download attachment "patch" of type "application/octet-stream" (450 bytes)