(In reply to St���phane DESNEUX from comment #31) > Hi! > I upgraded today the kernel from 5.14.21-150400.24.46 to > 5.14.21-150400.24.55.3 and issue is still here (unable to mount nfs share, > bad permissions etc. depending on what's going wrong in the cache I guess). I'm trying to write a test to this behavior to prevent these bugs in the future (i.e. I'm not a person who is going to fix this), but I'm still not able to trigger it on the original broken kernel kernel-default-base-5.14.21-150400.24.49.3.150400.24.19.3.x86_64. I haven't tested approach in comment 4 (I'm planning to), I just try to mount and use NFS, I also tried rdiff-backup use and everything is normal (no file truncate, not even file not being "hidden" due wrong cache). Could you please specify steps to reproduce the problem?