Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
MIME-Version: 1.0
References: <000000000000fd3bbe05efb0d1fd@google.com> <000000000000a5d5ab060055215c@google.com>
In-Reply-To: <000000000000a5d5ab060055215c@google.com>
From:   Aleksandr Nogikh <nogikh@google.com>
Date:   Thu, 13 Jul 2023 10:31:55 +0200
Message-ID: <CANp29Y7LG7szcmLzfjNAZRpitQwn6Yh-h7zPk+demObAwuxwZw@mail.gmail.com>
Subject: Re: [syzbot] [ntfs3?] WARNING in walk_component
To:     syzbot <syzbot+eba014ac93ef29f83dc8@syzkaller.appspotmail.com>
Cc:     akpm@linux-foundation.org,
        almaz.alexandrovich@paragon-software.com, davem@davemloft.net,
        hughd@google.com, jiri@nvidia.com, kuba@kernel.org,
        linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-mm@kvack.org, ntfs3@lists.linux.dev,
        syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
Precedence: bulk

On Thu, Jul 13, 2023 at 4:31=E2=80=AFAM syzbot
<syzbot+eba014ac93ef29f83dc8@syzkaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit d772781964415c63759572b917e21c4f7ec08d9f
> Author: Jakub Kicinski <kuba@kernel.org>
> Date:   Fri Jan 6 06:33:54 2023 +0000
>
>     devlink: bump the instance index directly when iterating
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=3D12801432a8=
0000
> start commit:   f3e8416619ce Merge tag 'soc-fixes-6.1-5' of git://git.ker=
n..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=3Db83f3e90d7476=
5ea
> dashboard link: https://syzkaller.appspot.com/bug?extid=3Deba014ac93ef29f=
83dc8
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=3D117d216b880=
000
>
> If the result looks correct, please mark the issue as fixed by replying w=
ith:
>
> #syz fix: devlink: bump the instance index directly when iterating

That commit fixes a second problem triggerable by the same reproducer
-- "INFO: rcu detected stall", but it is not related to the original
"WARNING in walk_component" crash.

>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisect=
ion
>
> --