diff --git a/src/runtime/os_linux_be64.go b/src/runtime/os_linux_be64.go
index 14fbad5d5f..9860002ee4 100644
--- a/src/runtime/os_linux_be64.go
+++ b/src/runtime/os_linux_be64.go
@@ -38,6 +38,7 @@ func sigdelset(mask *sigset, i int) {
 	*mask &^= 1 << (uint(i) - 1)
 }
 
+//go:nosplit
 func sigfillset(mask *uint64) {
 	*mask = ^uint64(0)
 }
diff --git a/src/runtime/os_linux_generic.go b/src/runtime/os_linux_generic.go
index 14810e3cc3..e1d0952ddf 100644
--- a/src/runtime/os_linux_generic.go
+++ b/src/runtime/os_linux_generic.go
@@ -38,6 +38,7 @@ func sigdelset(mask *sigset, i int) {
 	(*mask)[(i-1)/32] &^= 1 << ((uint32(i) - 1) & 31)
 }
 
+//go:nosplit
 func sigfillset(mask *uint64) {
 	*mask = ^uint64(0)
 }
diff --git a/src/runtime/os_linux_mips64x.go b/src/runtime/os_linux_mips64x.go
index 4ff66f9538..815a83a04b 100644
--- a/src/runtime/os_linux_mips64x.go
+++ b/src/runtime/os_linux_mips64x.go
@@ -48,6 +48,7 @@ func sigdelset(mask *sigset, i int) {
 	(*mask)[(i-1)/64] &^= 1 << ((uint32(i) - 1) & 63)
 }
 
+//go:nosplit
 func sigfillset(mask *[2]uint64) {
 	(*mask)[0], (*mask)[1] = ^uint64(0), ^uint64(0)
 }
diff --git a/src/runtime/os_linux_mipsx.go b/src/runtime/os_linux_mipsx.go
index 87962ed982..00fb02e4bf 100644
--- a/src/runtime/os_linux_mipsx.go
+++ b/src/runtime/os_linux_mipsx.go
@@ -42,6 +42,7 @@ func sigdelset(mask *sigset, i int) {
 	(*mask)[(i-1)/32] &^= 1 << ((uint32(i) - 1) & 31)
 }
 
+//go:nosplit
 func sigfillset(mask *[4]uint32) {
 	(*mask)[0], (*mask)[1], (*mask)[2], (*mask)[3] = ^uint32(0), ^uint32(0), ^uint32(0), ^uint32(0)
 }