Hi Jens, we currently have a bug report [1][2] regarding a data corruption with Samba's vfs_io_uring.c [3]. Is there're a know problem in newer kernels? It seems the 5.3 Kernel doesn't have the problem (at least Jeremy wasn't able to reproduce it on the Ubuntu 5.3 kernel). Do you have any hints how to track that down? Thanks! metze [1] https://bugzilla.samba.org/show_bug.cgi?id=14361 [2] https://lists.samba.org/archive/samba/2020-April/thread.html#229372[3] https://git.samba.org/?p=samba.git;a=blob;f=source3/modules/vfs_io_uring.c;hb=refs/heads/master