Giuseppe Scrivano

workdir and upperdir must be two different directories, but they must be on the same file system

could you run fuse-overlayfs with the `-d` option? EDIT: nevermind, sorry, I see you already did

does it work if you try as root with native overlay?

could you try to apply the following patch? ```diff $ git diff diff --git a/src/seccomp_notify.h b/src/seccomp_notify.h index 9dda848..de1d441 100644 --- a/src/seccomp_notify.h +++ b/src/seccomp_notify.h @@ -3,6 +3,10 @@ #include "seccomp_notify_plugin.h" +#ifndef...

this is what I get on Ubuntu 16.04: ``` # cat /etc/issue Ubuntu 16.04.7 LTS \n \l # grep -r SECCOMP_RET_USER_NOTIF /usr/include/ /usr/include/seccomp.h:/* SECCOMP_RET_USER_NOTIF was added in kernel v5.0. */...

can you show the output for `# grep -r "seccomp_notif_resp" /usr/include/` ?

we could add a check for `seccomp_notif_resp` but since it is available in Ubuntu 16.04, I think it is easier if we understand what is going on there and why...

so seccomp_notif_resp is defined as part of `/usr/include/seccomp.h`. Could you try adding `#include `to the `seccomp_notify_plugin.h` file?

seccomp_notif_sizes seems still missing. What do you see with `grep -r "seccomp_notif_sizes" /usr/include/`? Is your OS fully updated (did you run `apt-get update && apt-get upgrade`)?

does it get unstuck if you kill the fuse-overlayfs process? The use case you have described is not supported since the lower dirs are supposed to be immutable (the same...