Re: [PATCH 0/4] vfs: if RESOLVE_NO_XDEV passed to openat2, don't *trigger* automounts

On Mon, Aug 18, 2025 at 03:31:27PM +1000, Aleksa Sarai wrote:
> On 2025-08-17, Askar Safin <[email protected]> wrote:
> > openat2 had a bug: if we pass RESOLVE_NO_XDEV, then openat2
> > doesn't traverse through automounts, but may still trigger them.
> > See this link for full bug report with reproducer:
> > https://lore.kernel.org/linux-fsdevel/[email protected]/
> > 
> > This patchset fixes the bug.
> > 
> > RESOLVE_NO_XDEV logic hopefully becomes more clear:
> > now we immediately fail when we cross mountpoints.
> > 
> > I think this patchset should get to -fixes and stable trees.
> 
> You need to add
> 
>   Cc: <[email protected]> # v5.2+
> 
> (along with a Fixes: ... tag) for each commit you would like to be
> backported.
> 
> > I split everything to very small commits to make
> > everything as bisectable as possible.
> 
> I would merge the first three patches -- adding and removing code like

Agreed.