On Wed, Jan 18, 2023 at 07:38:58PM -0300, Paulo Alcantara wrote:

Stable team,

J. Pablo González disablez@disablez.com writes:

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On Mon, Jan 16, 2023 at 2:02 PM Paulo Alcantara pc@cjr.nz wrote:

...

J. Pablo González disablez@disablez.com writes:

...

We’re experiencing some issues when accessing some mounts in a DFS share, which seem to happen since kernel 5.17.

After some investigation, we’ve pinpointed the origin to commit a2809d0e16963fdf3984409e47f145 cccb0c6821

• Original BZ for that is https://bugzilla.kernel.org/show_bug.cgi?id=215440
• Patch discussion is at

https://patchwork.kernel.org/project/cifs-client/patch/YeHUxJ9zTVNrKveF@hime...

• Similar issues referenced in https://bugzilla.suse.com/show_bug.cgi?id=1198753

6.2-rc4 has

    c877ce47e137 ("cifs: reduce roundtrips on create/qinfo requests")

which should fix your issue.

Could you try it? Thanks.

I'll still need to test it more thoroughly, but for now, this patch seems to have fixed all issues, including the "-o nodfs ones." Thank you! Any chance this could be formally backported to 6.1.x ? I see it's only tagged for 6.2-rc for now.

Could you please queue

    c877ce47e137 ("cifs: reduce roundtrips on create/qinfo requests")

for 6.1.y as a fix for

    a2809d0e1696 ("cifs: quirk for STATUS_OBJECT_NAME_INVALID returned for non-ASCII dfs refs")

Find attached a backportable version of such commit. Thanks.

Now queued up, thanks.

greg k-h