On Sun, Jun 08, 2025 at 03:07:30PM -0700, Bart Van Assche wrote: > On 5/25/25 10:24 PM, Christoph Hellwig wrote: >> Umm, Bart I really expected better from you. You're ducking around >> providing a reproducer for over a week and waste multiple peoples >> time to tell us the only reproducer is your out of tree thingy >> reject upstream before? That's not really how Linux developement >> works. > > A reproducer for the blktests framework is available below. It took me > more time than I had expected to come up with a reproducer because I was > initially looking in the wrong direction (device mapper). As one can > see, the reproducer below does not involve any device mapper driver. > > Do you plan to work on a fix or do you perhaps expect me to do this? The problem here is that blk_crypto_fallback_split_bio_if_needed does sneaky splits behind the back of the main splitting code. The fix is to include the limit imposed by it in __bio_split_to_limits as well if the crypto fallback is used. If you have time to fix this that would be great. Otherwise I can give it a spin, but it's public holiday and travel season here, so my availability is a bit limited.
