diff --git a/src/runtime/pprof/proto.go b/src/runtime/pprof/proto.go
index 7621fe2..7864dd7 100644
--- a/src/runtime/pprof/proto.go
+++ b/src/runtime/pprof/proto.go
@@ -208,7 +208,7 @@
 }
 
 // locForPC returns the location ID for addr.
-// addr must a PC which is part of a call or the PC of an inline marker. This returns the location of the call.
+// addr must a return PC or 1 + the PC of an inline marker. This returns the location of the corresponding call.
 // It may emit to b.pb, so there must be no message encoding in progress.
 func (b *profileBuilder) locForPC(addr uintptr) uint64 {
 	id := uint64(b.locs[addr])
@@ -236,7 +236,7 @@
 	if frame.PC == 0 {
 		// If we failed to resolve the frame, at least make up
 		// a reasonable call PC. This mostly happens in tests.
-		frame.PC = addr
+		frame.PC = addr - 1
 	}
 
 	// We can't write out functions while in the middle of the
@@ -403,7 +403,16 @@
 		}
 
 		locs = locs[:0]
-		for _, addr := range e.stk {
+		for i, addr := range e.stk {
+			// Addresses from stack traces point to the
+			// next instruction after each call, except
+			// for the leaf, which points to where the
+			// signal occurred. locForPC expects return
+			// PCs, so increment the leaf address to look
+			// like a return PC.
+			if i == 0 {
+				addr++
+			}
 			l := b.locForPC(addr)
 			if l == 0 { // runtime.goexit
 				continue
diff --git a/src/runtime/pprof/proto_test.go b/src/runtime/pprof/proto_test.go
index 9b2de5f..4452d51 100644
--- a/src/runtime/pprof/proto_test.go
+++ b/src/runtime/pprof/proto_test.go
@@ -133,11 +133,11 @@
 	samples := []*profile.Sample{
 		{Value: []int64{20, 20 * 2000 * 1000}, Location: []*profile.Location{
 			{ID: 1, Mapping: map1, Address: addr1},
-			{ID: 2, Mapping: map1, Address: addr1 + 2},
+			{ID: 2, Mapping: map1, Address: addr1 + 1},
 		}},
 		{Value: []int64{40, 40 * 2000 * 1000}, Location: []*profile.Location{
 			{ID: 3, Mapping: map2, Address: addr2},
-			{ID: 4, Mapping: map2, Address: addr2 + 2},
+			{ID: 4, Mapping: map2, Address: addr2 + 1},
 		}},
 	}
 	checkProfile(t, p, period, periodType, sampleType, samples, "")
diff --git a/src/runtime/pprof/protomem_test.go b/src/runtime/pprof/protomem_test.go
index 65ef4ed..471b1ae 100644
--- a/src/runtime/pprof/protomem_test.go
+++ b/src/runtime/pprof/protomem_test.go
@@ -14,7 +14,11 @@
 func TestConvertMemProfile(t *testing.T) {
 	addr1, addr2, map1, map2 := testPCs(t)
 
-	a1, a2 := uintptr(addr1), uintptr(addr2)
+	// MemProfileRecord stacks are return PCs, so add one to the
+	// addresses recorded in the "profile". The proto profile
+	// locations are call PCs, so conversion will subtract one
+	// from these and get back to addr1 and addr2.
+	a1, a2 := uintptr(addr1)+1, uintptr(addr2)+1
 	rate := int64(512 * 1024)
 	rec := []runtime.MemProfileRecord{
 		{AllocBytes: 4096, FreeBytes: 1024, AllocObjects: 4, FreeObjects: 1, Stack0: [32]uintptr{a1, a2}},
diff --git a/src/runtime/symtab.go b/src/runtime/symtab.go
index 0fd4330..245a7e6 100644
--- a/src/runtime/symtab.go
+++ b/src/runtime/symtab.go
@@ -87,6 +87,13 @@
 		}
 		f := funcInfo._Func()
 		entry := f.Entry()
+		if pc > entry {
+			// We store the pc of the start of the instruction following
+			// the instruction in question (the call or the inline mark).
+			// This is done for historical reasons, and to make FuncForPC
+			// work correctly for entries in the result of runtime.Callers.
+			pc--
+		}
 		name := funcname(funcInfo)
 		file, line := funcline1(funcInfo, pc, false)
 		if inldata := funcdata(funcInfo, _FUNCDATA_InlTree); inldata != nil {
diff --git a/src/runtime/traceback.go b/src/runtime/traceback.go
index 9b7fafc..a536fb2 100644
--- a/src/runtime/traceback.go
+++ b/src/runtime/traceback.go
@@ -344,8 +344,9 @@
 		}
 
 		if pcbuf != nil {
+			pc := frame.pc
 			// backup to CALL instruction to read inlining info (same logic as below)
-			tracepc := frame.pc
+			tracepc := pc
 			if (n > 0 || flags&_TraceTrap == 0) && frame.pc > f.entry && !waspanic {
 				tracepc--
 			}
@@ -363,12 +364,13 @@
 					} else if skip > 0 {
 						skip--
 					} else if n < max {
-						(*[1 << 20]uintptr)(unsafe.Pointer(pcbuf))[n] = tracepc
+						(*[1 << 20]uintptr)(unsafe.Pointer(pcbuf))[n] = pc
 						n++
 					}
 					lastFuncID = inltree[ix].funcID
 					// Back up to an instruction in the "caller".
 					tracepc = frame.fn.entry + uintptr(inltree[ix].parentPc)
+					pc = tracepc + 1
 				}
 			}
 			// Record the main frame.
@@ -377,7 +379,7 @@
 			} else if skip > 0 {
 				skip--
 			} else if n < max {
-				(*[1 << 20]uintptr)(unsafe.Pointer(pcbuf))[n] = tracepc
+				(*[1 << 20]uintptr)(unsafe.Pointer(pcbuf))[n] = pc
 				n++
 			}
 			lastFuncID = f.funcID