src/runtime/pprof/pprof_test.go | 35 +++++++++++++++++++++++++++++++++++
 src/runtime/sys_linux_arm.s     |  6 ++++--
 src/runtime/sys_linux_arm64.s   |  6 ++++--
 src/runtime/sys_linux_mips64x.s |  6 ++++--
 src/runtime/sys_linux_ppc64x.s  |  8 +++++---

diff --git a/src/runtime/pprof/pprof_test.go b/src/runtime/pprof/pprof_test.go
index 0e0cccbc6a6a54f59bf10770453f2d957eac2fab..7bd28fc8bbf20c16965132220bc4077c05dd0fe0 100644
--- a/src/runtime/pprof/pprof_test.go
+++ b/src/runtime/pprof/pprof_test.go
@@ -1458,3 +1458,38 @@ 			}
 		})
 	}
 }
+
+func TestTimeVDSO(t *testing.T) {
+	// Test that time functions have the right stack trace. In particular,
+	// it shouldn't be recursive.
+
+	if runtime.GOOS == "android" {
+		// Flaky on Android, issue 48655. VDSO may not be enabled.
+		testenv.SkipFlaky(t, 48655)
+	}
+
+	p := testCPUProfile(t, stackContains, []string{"time.now"}, avoidFunctions(), func(dur time.Duration) {
+		t0 := time.Now()
+		for {
+			t := time.Now()
+			if t.Sub(t0) >= dur {
+				return
+			}
+		}
+	})
+
+	// Check for recursive time.now sample.
+	for _, sample := range p.Sample {
+		var seenNow bool
+		for _, loc := range sample.Location {
+			for _, line := range loc.Line {
+				if line.Function.Name == "time.now" {
+					if seenNow {
+						t.Fatalf("unexpected recursive time.now")
+					}
+					seenNow = true
+				}
+			}
+		}
+	}
+}
diff --git a/src/runtime/sys_linux_arm.s b/src/runtime/sys_linux_arm.s
index 475f52344c7e9b3113af1e4cd0a549aa09b5d35b..5ebff90e7600c6f6f35b7eec19e4759c6066fddd 100644
--- a/src/runtime/sys_linux_arm.s
+++ b/src/runtime/sys_linux_arm.s
@@ -259,8 +259,9 @@ 	MOVW	m_vdsoSP(R5), R2
 	MOVW	R1, 4(R13)
 	MOVW	R2, 8(R13)
 
+	MOVW	$ret-4(FP), R2 // caller's SP
 	MOVW	LR, m_vdsoPC(R5)
-	MOVW	R13, m_vdsoSP(R5)
+	MOVW	R2, m_vdsoSP(R5)
 
 	MOVW	m_curg(R5), R0
 
@@ -351,8 +352,9 @@ 	MOVW	m_vdsoSP(R5), R2
 	MOVW	R1, 4(R13)
 	MOVW	R2, 8(R13)
 
+	MOVW	$ret-4(FP), R2 // caller's SP
 	MOVW	LR, m_vdsoPC(R5)
-	MOVW	R13, m_vdsoSP(R5)
+	MOVW	R2, m_vdsoSP(R5)
 
 	MOVW	m_curg(R5), R0
 
diff --git a/src/runtime/sys_linux_arm64.s b/src/runtime/sys_linux_arm64.s
index 198a5bacefbb70725b1020b1628a8f9bfd1db9a2..27a285090e9561fd1ea57d8ed9abec59e5e4aade 100644
--- a/src/runtime/sys_linux_arm64.s
+++ b/src/runtime/sys_linux_arm64.s
@@ -221,8 +221,9 @@ 	MOVD	m_vdsoSP(R21), R3
 	MOVD	R2, 8(RSP)
 	MOVD	R3, 16(RSP)
 
+	MOVD	$ret-8(FP), R2 // caller's SP
 	MOVD	LR, m_vdsoPC(R21)
-	MOVD	R20, m_vdsoSP(R21)
+	MOVD	R2, m_vdsoSP(R21)
 
 	MOVD	m_curg(R21), R0
 	CMP	g, R0
@@ -304,8 +305,9 @@ 	MOVD	m_vdsoSP(R21), R3
 	MOVD	R2, 8(RSP)
 	MOVD	R3, 16(RSP)
 
+	MOVD	$ret-8(FP), R2 // caller's SP
 	MOVD	LR, m_vdsoPC(R21)
-	MOVD	R20, m_vdsoSP(R21)
+	MOVD	R2, m_vdsoSP(R21)
 
 	MOVD	m_curg(R21), R0
 	CMP	g, R0
diff --git a/src/runtime/sys_linux_mips64x.s b/src/runtime/sys_linux_mips64x.s
index c3e9f37694578e140cd38c7300b60bdc4b148db0..6450b2896a558ab9e23799aeefe3c90a5efade8b 100644
--- a/src/runtime/sys_linux_mips64x.s
+++ b/src/runtime/sys_linux_mips64x.s
@@ -228,8 +228,9 @@ 	MOVV	m_vdsoSP(R17), R3
 	MOVV	R2, 8(R29)
 	MOVV	R3, 16(R29)
 
+	MOVV	$ret-8(FP), R2 // caller's SP
 	MOVV	R31, m_vdsoPC(R17)
-	MOVV	R29, m_vdsoSP(R17)
+	MOVV	R2, m_vdsoSP(R17)
 
 	MOVV	m_curg(R17), R4
 	MOVV	g, R5
@@ -297,8 +298,9 @@ 	MOVV	m_vdsoSP(R17), R3
 	MOVV	R2, 8(R29)
 	MOVV	R3, 16(R29)
 
+	MOVV	$ret-8(FP), R2 // caller's SP
 	MOVV	R31, m_vdsoPC(R17)
-	MOVV	R29, m_vdsoSP(R17)
+	MOVV	R2, m_vdsoSP(R17)
 
 	MOVV	m_curg(R17), R4
 	MOVV	g, R5
diff --git a/src/runtime/sys_linux_ppc64x.s b/src/runtime/sys_linux_ppc64x.s
index 7be8c4c7242485df682ae19d99e3b4a4d30834b3..601ce20b7862d3953da041e56341c2fc2c3a7b3a 100644
--- a/src/runtime/sys_linux_ppc64x.s
+++ b/src/runtime/sys_linux_ppc64x.s
@@ -204,8 +204,9 @@ 	MOVD	R4, 32(R1)
 	MOVD	R5, 40(R1)
 
 	MOVD	LR, R14
+	MOVD	$ret-FIXED_FRAME(FP), R5 // caller's SP
 	MOVD	R14, m_vdsoPC(R21)
-	MOVD	R15, m_vdsoSP(R21)
+	MOVD	R5, m_vdsoSP(R21)
 
 	MOVD	m_curg(R21), R6
 	CMP	g, R6
@@ -296,9 +297,10 @@ 	MOVD	m_vdsoSP(R21), R5
 	MOVD	R4, 32(R1)
 	MOVD	R5, 40(R1)
 
-	MOVD	LR, R14		// R14 is unchanged by C code
+	MOVD	LR, R14				// R14 is unchanged by C code
+	MOVD	$ret-FIXED_FRAME(FP), R5	// caller's SP
 	MOVD	R14, m_vdsoPC(R21)
-	MOVD	R15, m_vdsoSP(R21)
+	MOVD	R5, m_vdsoSP(R21)
 
 	MOVD	m_curg(R21), R6
 	CMP	g, R6