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From:   Namjae Jeon <linkinjeon@kernel.org>
Date:   Wed, 17 Nov 2021 18:58:50 +0900
Message-ID: <CAKYAXd9wKDTE5WPQWcBZ_mHfaAOOY+pDj7=yndi17gf2KqWpwg@mail.gmail.com>
Subject: Re: ksmbd: Unsupported addition info
To:     Oleksandr Natalenko <oleksandr@natalenko.name>
Cc:     Sergey Senozhatsky <senozhatsky@chromium.org>,
        Steve French <sfrench@samba.org>,
        Hyunchul Lee <hyc.lee@gmail.com>, linux-cifs@vger.kernel.org,
        linux-kernel@vger.kernel.org
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2021-11-17 16:00 GMT+09:00, Oleksandr Natalenko <oleksandr@natalenko.name>:
> Hello.
>
> On st=C5=99eda 17. listopadu 2021 0:36:53 CET Namjae Jeon wrote:
>> 2021-11-17 6:44 GMT+09:00, Oleksandr Natalenko
>> <oleksandr@natalenko.name>:
>> > With the latest ksmbd from the next branch I have an issue with wife's
>> > Windows
>> > 10 laptop while copying/removing files from the network share. On her
>> > client it
>> > looks like copy operation (server -> laptop) reaches 99% and then
>> > stalls,
>> > and
>> > on the server side there's this in the kernel log:
>> >
>> > ```
>> > ksmbd: Unsupported addition info: 0xf)
>> > ksmbd: Unsupported addition info: 0x20)
>> > ```
>> >
>> > repeated multiple times. I must note that in fact the file gets copied
>> > to
>> > her
>> > laptop, but Windows copy dialog just hangs.
>> >
>> > Any idea what it could be and how to avoid it? This also happened
>> > before
>> > (I'm
>> > a pretty early ksmbd adopter), but I'm reporting it just now because I
>> > na=C3=AFvely
>> > hoped it would be fixed automagically :). This never happened to me
>> > with
>> > userspace Samba though.
>> >
>> > This is my smb.conf:
>> >
>> > ```
>> > [global]
>> > workgroup =3D KANAPKA
>> > server string =3D ksmbd server %v
>> > netbios name =3D defiant
>> > valid users =3D __guest
>> >
>> > [Shared]
>> > valid users =3D __guest
>> > path =3D /mnt/shared
>> > force user =3D _shared
>> > force group =3D _shared
>> > browsable =3D no
>> > writeable =3D yes
>> > veto files =3D /lost+found/
>> > ```
>> >
>> > Appreciate your time and looking forward to your response.
>>
>> Thanks for your report, I have seen same symptom before, I thought it
>> was a windows issue as it is also reproduced against samba. If you
>> wait for a few minutes, does not the 99% message window close?
>
> Eventually it does close on its own in a minute or so. Also, it may close
> after clicking the "X" (close) button, but not instantly.
As I remember, The X button will delete the file you copied. Could you
please give me packet dump(tcpdump) on problem situation ? and It
would be nice to give a dump also for a successful copy. I will try to
compare the two.

Thanks!
>
> --
> Oleksandr Natalenko (post-factum)
>
>
>