Re: cifs mount regression in 4.8 and 4.4 stable

From: Sachin Prabhu
Date: Thu Sep 22 2016 - 11:17:17 EST

On Thu, 2016-09-22 at 10:09 -0500, Seth Forshee wrote:
> We've received reports from users of a cifs mount regression in our
> 4.4-based kernel, e.g. [1]. It is fixed by reverting the follwing
> commit
> from 4.8 which was applied to 4.4 stable:
> Âa6b5058 fs/cifs: make share unaccessible at root level mountable
> Testing against 4.8-rc7 shows that the problem is present there as
> well.
> Thanks,
> Seth
> [1]

Hello Seth,Â

We have identified some regressions introduced by the mentioned patch
These include

a) mounting of DFS shares breaks. The fix is included in Steve's tree

b) mounting of the same share with different paths breaks. Fixed by
upstream commit c1d8b24d18192764fe82067ec6aa8d4c3bf094e0

c) memory leaks in mounting fixed by upstream 4214ebf4654798309

Can you please share any other reports not mentioned above?

Sachin Prabhu