const golang.org/x/sys/unix.PTRACE_GETSIGMASK

one use

	golang.org/x/sys/unix (current package)
		zerrors_linux.go#L2718: 	PTRACE_GETSIGMASK                           = 0x420a

The pages are generated with Golds v0.7.6. (GOOS=linux GOARCH=amd64)