On Sun, May 14, 2023 at 08:20:04PM +0100, Lorenzo Stoakes wrote: > As discussed at LSF/MM, on the flight over I wrote a little repro [0] which > reliably triggers the ext4 warning by recreating the scenario described > above, using a small userland program and kernel module. > > This code is not perfect (plane code :) but does seem to do the job > adequately, also obviously this should only be run in a VM environment > where data loss is acceptable (in my case a small qemu instance). It would be really awesome if you could wire it up with and submit it to xfstests.