Thank you Sebastian for your patches and understanding. And thank you Luis for cc-ing me directly, it helps :) I have just tried your patches on 5.10.83-rt58 and indeed I can't reproduce the problem. Also note that I can confirm the problem is not present from 5.14rt. I understand the problem is intrinsically not present in 5.15 because of a refactoring in Vanilla and that some of those changes were backported in 5.14rt ? (and I guess your "backport from upstream" patch is based on those changes?). For our need, I think we will use v5.15, but it's great if this bug can be solved in 5.10. Thank a lot. On Mon, Dec 20, 2021 at 9:28 AM Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx> wrote: > > On 2021-12-19 18:34:57 [-0300], Luis Claudio R. Goncalves wrote: > > Sebastian, I just released v5.10.87-rt59, so v5.10-rt is up to date with > > stable. Do you want me to work on a -rc release with the two patches for > > this thread or do you prefer I wait for Florent's answer? > > Waiting for some feedback / testing shouldn't be bad. Given the timing > he hardly had any chance to respond. > > > Best regards, > > Luis > > Sebastian