From 20025432454eab3c637452adf3c66042909f029c Mon Sep 17 00:00:00 2001
From: Chris Hoffman <christopher.hoffman@gmail.com>
Date: Mon, 11 Sep 2017 11:17:22 -0400
Subject: [PATCH] Switching atomic vars to int32 to address panic on some
 architectures (#3314)

---
 vault/expiration.go | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/vault/expiration.go b/vault/expiration.go
index d7b00af39..41a697291 100644
--- a/vault/expiration.go
+++ b/vault/expiration.go
@@ -60,10 +60,9 @@ type ExpirationManager struct {
 	pending     map[string]*time.Timer
 	pendingLock sync.RWMutex
 
-	tidyLock int64
+	tidyLock int32
 
-	// A set of locks to handle restoration
-	restoreMode        int64
+	restoreMode        int32
 	restoreModeLock    sync.RWMutex
 	restoreRequestLock sync.RWMutex
 	restoreLocks       []*locksutil.LockEntry
@@ -76,7 +75,6 @@ type ExpirationManager struct {
 func NewExpirationManager(router *Router, view *BarrierView, ts *TokenStore, logger log.Logger) *ExpirationManager {
 	if logger == nil {
 		logger = log.New("expiration_manager")
-
 	}
 
 	exp := &ExpirationManager{
@@ -150,7 +148,7 @@ func (m *ExpirationManager) unlockLease(leaseID string) {
 
 // inRestoreMode returns if we are currently in restore mode
 func (m *ExpirationManager) inRestoreMode() bool {
-	return atomic.LoadInt64(&m.restoreMode) == 1
+	return atomic.LoadInt32(&m.restoreMode) == 1
 }
 
 // Tidy cleans up the dangling storage entries for leases. It scans the storage
@@ -166,12 +164,12 @@ func (m *ExpirationManager) Tidy() error {
 
 	var tidyErrors *multierror.Error
 
-	if !atomic.CompareAndSwapInt64(&m.tidyLock, 0, 1) {
+	if !atomic.CompareAndSwapInt32(&m.tidyLock, 0, 1) {
 		m.logger.Warn("expiration: tidy operation on leases is already in progress")
 		return fmt.Errorf("tidy operation on leases is already in progress")
 	}
 
-	defer atomic.CompareAndSwapInt64(&m.tidyLock, 1, 0)
+	defer atomic.CompareAndSwapInt32(&m.tidyLock, 1, 0)
 
 	m.logger.Info("expiration: beginning tidy operation on leases")
 	defer m.logger.Info("expiration: finished tidy operation on leases")
@@ -276,7 +274,7 @@ func (m *ExpirationManager) Restore(errorFunc func(), loadDelay time.Duration) (
 		// if restore mode finished successfully, restore mode was already
 		// disabled with the lock. In an error state, this will allow the
 		// Stop() function to shut everything down.
-		atomic.StoreInt64(&m.restoreMode, 0)
+		atomic.StoreInt32(&m.restoreMode, 0)
 
 		switch {
 		case retErr == nil:
@@ -391,7 +389,7 @@ func (m *ExpirationManager) Restore(errorFunc func(), loadDelay time.Duration) (
 	m.restoreModeLock.Lock()
 	m.restoreLoaded = sync.Map{}
 	m.restoreLocks = nil
-	atomic.StoreInt64(&m.restoreMode, 0)
+	atomic.StoreInt32(&m.restoreMode, 0)
 	m.restoreModeLock.Unlock()
 
 	m.logger.Info("expiration: lease restore complete")