diff --git a/tools/testing/selftests/arm64/signal/testcases/ssve_regs.c b/tools/testing/selftests/arm64/signal/testcases/ssve_regs.c
index d0a178945b1a..c6b17c47cac4 100644
--- a/tools/testing/selftests/arm64/signal/testcases/ssve_regs.c
+++ b/tools/testing/selftests/arm64/signal/testcases/ssve_regs.c
@@ -34,6 +34,10 @@ static bool sme_get_vls(struct tdescr *td)
 
 		vl &= PR_SME_VL_LEN_MASK;
 
+		/* Did we find the lowest supported VL? */
+		if (vq < sve_vq_from_vl(vl))
+			break;
+
 		/* Skip missing VLs */
 		vq = sve_vq_from_vl(vl);
 
diff --git a/tools/testing/selftests/arm64/signal/testcases/za_regs.c b/tools/testing/selftests/arm64/signal/testcases/za_regs.c
index ea45acb115d5..174ad6656696 100644
--- a/tools/testing/selftests/arm64/signal/testcases/za_regs.c
+++ b/tools/testing/selftests/arm64/signal/testcases/za_regs.c
@@ -34,6 +34,10 @@ static bool sme_get_vls(struct tdescr *td)
 
 		vl &= PR_SME_VL_LEN_MASK;
 
+		/* Did we find the lowest supported VL? */
+		if (vq < sve_vq_from_vl(vl))
+			break;
+
 		/* Skip missing VLs */
 		vq = sve_vq_from_vl(vl);