On Wed, Jul 17, 2019 at 3:29 AM Palmer Dabbelt [off-list ref] wrote:

This registers the new fchmodat4 syscall in most places as nuber 434,
with alpha being the exception where it's 544.  I found all these sites
by grepping for fspick, which I assume has found me everything.

434 is now pidfd_open, the next free one is 436.

 arch/alpha/kernel/syscalls/syscall.tbl      | 1 +
 arch/arm/tools/syscall.tbl                  | 1 +
 arch/arm64/include/asm/unistd32.h           | 2 ++

You missed arch/arm64/include/asm/unistd.h, which
contains __NR_compat_syscalls

      Arnd