linux-kernel - Re: [syzbot] [reiserfs?] [overlayfs?] BUG: unable to handle kernel paging request in take_dentry_name

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Date:   Wed, 4 Oct 2023 11:35:12 +0300
From:   Amir Goldstein <amir73il@...il.com>
To:     syzbot <syzbot+90392eaed540afcc8fc3@...kaller.appspotmail.com>
Cc:     brauner@...nel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-unionfs@...r.kernel.org,
        miklos@...redi.hu, reiserfs-devel@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [reiserfs?] [overlayfs?] BUG: unable to handle kernel
 paging request in take_dentry_name_snapshot

On Sun, Jul 30, 2023 at 5:34 PM syzbot
<syzbot+90392eaed540afcc8fc3@...kaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit 1784fbc2ed9c888ea4e895f30a53207ed7ee8208
> Author: Christian Brauner <brauner@...nel.org>
> Date:   Fri Jun 16 12:53:58 2023 +0000
>
>     ovl: port to new mount api
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=12561bd9a80000
> start commit:   8395ae05cb5a Merge tag 'scsi-misc' of git://git.kernel.org..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=85327a149d5f50f
> dashboard link: https://syzkaller.appspot.com/bug?extid=90392eaed540afcc8fc3
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16199460480000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1797f274480000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: ovl: port to new mount api
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

#syz dup: WARNING: locking bug in take_dentry_name_snapshot