Re: weird splats in xfs/561 on 6.10-rc1?

["Darrick J. Wong" <djwong@kernel.org>]

On Thu, May 30, 2024 at 10:39:29PM -0700, Christoph Hellwig wrote:
> On Thu, May 30, 2024 at 03:59:12PM -0700, Darrick J. Wong wrote:
> > >From what I can tell, this wasn't happening with my 6.9 djwong-dev
> > branch, so I suspect it's something that came in from when I rebased
> > against 6.10-rc1.  It seems to happen all over the place (and not just
> > with realtime files) if I leave Zhang Yi's iomap patches applied.  If I
> > revert them, the screaming seems to go down to just this one test.
> 
> When testing Linus' tree I haven't seen this yet, but I also haven't
> done a lot of testing yet.  I mostly triggered odd MM warnings that
> Johannes fixes, but I haven't seen something like this yet. 
> 
> > The file itself is ~1482KB, or enough for the file to have 0x169 actual
> > blocks of written data to it, so the delalloc reservation is beyond the
> > eof block.  Any thoughts?
> 
> I'll see if I can reproduce it with your tree.  I have a pretty full
> plate given that yesterday was a public holiday here which doesn't
> really help my catch up rate..

Yeah.  You might want to revert all of Zhang Yi's patches first, though
maybe his new series actually fixes all the problems.

(Hm, no, it's still missing that cow-over-hole thing Dave was musing
about.)

--D