Re: [PATCH 1/2] fs: refuse O_TMPFILE creation with an unmapped fsuid or fsgid

[Christoph Hellwig <hch@infradead.org>]

On Tue, Jul 07, 2026 at 01:20:51PM +0200, Christian Brauner wrote:
> On Tue, Jul 07, 2026 at 09:20:48AM +0200, Christian Brauner wrote:
> > On Mon, Jul 06, 2026 at 07:18:38PM -0700, Darrick J. Wong wrote:
> > > On Sat, Jul 04, 2026 at 04:31:00AM -0700, Christoph Hellwig wrote:
> > > > This commit causes failures in xfstests generic/633 generic/696 and
> > > > generic/697 with messages like:
> > > > 
> > > > utils.c: 948: openat_tmpfile_supported - Value too large for defined data type - failure: create
> > > 
> > > Seconded, I also see these test regressions now.
> > 
> > Yes, that's expected. It needs a fix in the idmapped mount feature test
> > portion. I thought I had sent a fix for that though.
> 
> And so I did:
> 
> https://lore.kernel.org/20260615-overlay-idmapped-vfstest-v1-1-c6b3b2228092@kernel.org

It would be good to mention the test suite breakage in the commits
insted of leaving people wondering, e.g.:

This breaks xfstests foo/bar because it makes wrong assumptions.  A fix
(will be / has been) posted to the mailing list.