Some additional information: # strace -e trace=file ./cordtest ... openat(AT_FDCWD, "/proc/3702/clear_refs", O_WRONLY) = 3 ... SUCCEEDED +++ exited with 0 +++
It is absolutely legal for the owner of a process to write to /proc/<pid>/clear_refs
I think it is a bug in Gentoo sandbox that this is not allowed. Andrey
