From 2f8e59c8561aa561af12db87f54ac9c697c6b678 Mon Sep 17 00:00:00 2001
From: davidadeleon <56207066+davidadeleon@users.noreply.github.com>
Date: Wed, 11 Oct 2023 12:59:48 -0400
Subject: [PATCH] fix panic when unlocking unlocked user (#23611)

---
 vault/logical_system_user_lockout.go | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/vault/logical_system_user_lockout.go b/vault/logical_system_user_lockout.go
index de2f6534649a..3e447b58ab3a 100644
--- a/vault/logical_system_user_lockout.go
+++ b/vault/logical_system_user_lockout.go
@@ -51,14 +51,16 @@ func unlockUser(ctx context.Context, core *Core, mountAccessor string, aliasName
 		return err
 	}
 
-	// Check if we have no more locked users and cancel any running lockout logger
-	core.userFailedLoginInfoLock.RLock()
-	numLockedUsers := len(core.userFailedLoginInfo)
-	core.userFailedLoginInfoLock.RUnlock()
-
-	if numLockedUsers == 0 {
-		core.Logger().Info("user lockout(s) cleared")
-		core.lockoutLoggerCancel()
+	if core.lockoutLoggerCancel != nil {
+		// Check if we have no more locked users and cancel any running lockout logger
+		core.userFailedLoginInfoLock.RLock()
+		numLockedUsers := len(core.userFailedLoginInfo)
+		core.userFailedLoginInfoLock.RUnlock()
+
+		if numLockedUsers == 0 {
+			core.Logger().Info("user lockout(s) cleared")
+			core.lockoutLoggerCancel()
+		}
 	}
 
 	return nil