On Fri, Feb 14, 2020 at 09:14:33AM +0800, Yang Xu wrote: > > > > So were you able to reproduce this on a 5.6.0-rc1 kernel or not? > No. I don't reproduce it on 5.6.0-rc1 kernel, but 5.6.0-rc1 kernel hang on > my KVM machine when run generic/269. I'm not able to reproduce the 5.6.0-rc1 hang using kvm-xfstests[1]. Neither has any other ext4 developers, which is why it might be useful to see if there's something unique in your .config for 5.6.0-rc1. Could you send us the .config you were using? [1] https://github.com/tytso/xfstests-bld/blob/master/Documentation/kvm-xfstests.md Cheers, - Ted