[Samba] Win7 clients problem after upgrading samba file server to 4.12 on Arch

Ralph Boehme slow at samba.org
Sat May 9 13:32:05 UTC 2020

Am 5/9/20 um 3:11 PM schrieb pavlos:
> sob., 9 maj 2020 o 14:37 Ralph Boehme <slow at samba.org
> <mailto:slow at samba.org>> napisał(a):
>     To be clear: if you're running into this issue that I'm seeing in the
>     code, then this is *not* a client side bug. It's a server bug that only
>     gets triggered by a specific access pattern. Likely Win 7 has a
>     different pattern compared to other Windows versions which explains why
>     you only see it there.
>     -slow
> Ralf,
> Give me a while, I have to prepare the server moving it to the commit we
> have our focus on.

I guess we can avoid that, the issue should be present in any version
after that commit.

>   * Windows Explorer - this tool could display a folder content, go into
>     a subfolder, but any attempt to skip back two folders up in the
>     address bar always was producing this funny message "/The process
>     cannot access the file because it is being used by another process./" 

this sounds like a reliable and simple reproducer, so please use this
access pattern when trying to reproduce the issue.

Fwiw, I've written a testcase that excercises the supposed problematic
access pattern and can reproduce a server bug in the commit you've bisected.

I have a WIP fix for master, can you give it a whirl?

CI: https://gitlab.com/samba-team/devel/samba/pipelines/144360879


Ralph Boehme, Samba Team                https://samba.org/
Samba Developer, SerNet GmbH   https://sernet.de/en/samba/
GPG-Fingerprint   FAE2C6088A24252051C559E4AA1E9B7126399E46

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