Re: [6.15-rc2 regression] xfs: assertion failed in inode allocation

[Dave Chinner <david@fromorbit.com>]

On Tue, Apr 15, 2025 at 10:30:06PM -0700, Darrick J. Wong wrote:
> On Wed, Apr 16, 2025 at 02:49:56PM +1000, Dave Chinner wrote:
> > Hi folks,
> > 
> > After upgrading to ia current TOT kernel from 6.15-rc1, I'm now
> > seeing these assert failures during inode allocation when running
> > check-parallel:
> > 
> > [  355.630225] XFS: Assertion failed: freecount == to_perag(cur->bc_group)->pagi_freecount, file: fs/xfs/libxfs/xfs_ialloc.c, line: 280
> 
> I haven't seen this assertion tripping any more than it has in the past.
> 
> But I will say that I've seen a number of other problems, like page
> state corruption, null pointer derefs from the block layer, and weird
> behavior from the rest of the kernel.  Turning off LBS support fixes a
> lot of it.  -rc2 doesn't seem to have fixed anything over -rc1.

Yeah, that's pretty much my experience with the current TOT kernel -
it seems to be randomly corrupting block devices, failing to detect
filesystem features correctly (e.g. generic/577 seems to think that
XFS supports fsverity, then it fork bombs the machine with thousands
of child processes that never get reaped), stuff hanging in weird
places (e.g. udevadm getting stuck waiting on things that have
already happened) and so on.

I would not be running 6.15-rcX on anything important right now...

-Dave.
-- 
Dave Chinner
david@fromorbit.com