Hi Dominik, After merging the syscalls tree, today's linux-next build (x86_64 allnoconfig) failed like this: Caused by commit 3e334170db85 ("mm: use do_futex() instead of sys_futex() in mm_release()") CONFIG_FUTEX is not set for this build. Normally sys_futex() would be the one from kernel/sys_ni.c in this case ... I have reverted that commit for today. -- Cheers, Stephen Rothwell