linux-kernel - Re: [syzbot] linux-next test error: KASAN: null-ptr-deref Read in fuse_conn

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Message-ID: <CAJfpegvzgVwN_4a-ghtHSf-SCV5SEwv4aeURvK_qDzMmU2nA4Q@mail.gmail.com>
Date:   Mon, 6 Sep 2021 19:34:55 +0200
From:   Miklos Szeredi <miklos@...redi.hu>
To:     Marco Elver <elver@...gle.com>
Cc:     syzbot <syzbot+b304e8cb713be5f9d4e1@...kaller.appspotmail.com>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        Linux-Next Mailing List <linux-next@...r.kernel.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>
Subject: Re: [syzbot] linux-next test error: KASAN: null-ptr-deref Read in fuse_conn_put

On Mon, 6 Sept 2021 at 18:59, Marco Elver <elver@...gle.com> wrote:
>
> On Mon, 6 Sept 2021 at 13:56, Miklos Szeredi <miklos@...redi.hu> wrote:
> > Thanks,
> >
> > Force pushed fixed commit 660585b56e63 ("fuse: wait for writepages in
> > syncfs") to fuse.git#for-next.
> >
> > This is fixed as far as I'm concerned, not sure how to tell that to syzbot.
>
> Thanks -- we can let syzbot know:
>
> #syz fix: fuse: wait for writepages in syncfs
>
> (The syntax is just "#syz fix: <commit title>".)

Yeah, but that patch has several versions, one of which is broken.
Syzbot can't tell the difference just based on the title.

Thanks,
Miklos