Unhandled amd64-linux syscall: 467 (open_tree_attr)

Unhandled amd64-linux syscall: 467 (open_tree_attr)

__NR_open_tree_attr is a generic syscall number for linux defined in
vki-scnums-shared-linux.h Hooked in all syswrap-{x86,s390x,riscv64,\
ppc64,ppc32,nanomips,mips64,mips32,arm64,arm,amd64}-linux.c with LINXY
to sys_open_tree_attr.  With sys_open_tree_attr being defined in
priv_syswrap-linux.h with DECL_TEMPLATE linux.  PRE and POST in
syswrap-linux.c.

https://bugs.kde.org/show_bug.cgi?id=521054