linux-kernel - Re: [syzbot] [ntfs3?] general protection fault in d_flags_for

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Message-ID: <CANp29Y4y1T6T6VBCGxOP2aDSf-2zRBgFOJEbxZT_Figd=gNm0A@mail.gmail.com>
Date:   Thu, 13 Jul 2023 12:17:13 +0200
From:   Aleksandr Nogikh <nogikh@...gle.com>
To:     syzbot <syzbot+2f012b85ac8ce9be92e5@...kaller.appspotmail.com>
Cc:     almaz.alexandrovich@...agon-software.com, hverkuil-cisco@...all.nl,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        mchehab@...nel.org, ntfs3@...ts.linux.dev,
        syzkaller-bugs@...glegroups.com, viro@...iv.linux.org.uk
Subject: Re: [syzbot] [ntfs3?] general protection fault in d_flags_for_inode

On Thu, Jul 13, 2023 at 11:37 AM syzbot
<syzbot+2f012b85ac8ce9be92e5@...kaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit c43784c856483dded7956175b5786e27af6d87f1
> Author: Hans Verkuil <hverkuil-cisco@...all.nl>
> Date:   Thu Dec 8 07:51:32 2022 +0000
>
>     media: v4l2-mem2mem: use vb2_is_streaming()
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=17e7d1bca80000

No, that's apparently unrelated. Though I don't see where exactly the
bisection went astray..
Likely because the reproducer got quite unreliable at older commits
and we made a few false "git bisect good" commands.

We will soon start automatically discarding such bisection results:
https://github.com/google/syzkaller/pull/4028

> start commit:   4da34b7d175d Merge tag 'thermal-6.1-rc2' of git://git.kern..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=ea03ca45176080bc
> dashboard link: https://syzkaller.appspot.com/bug?extid=2f012b85ac8ce9be92e5
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17834f9a880000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=10edf526880000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: media: v4l2-mem2mem: use vb2_is_streaming()

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