1 files changed, 2 insertions, 1 deletions

diff --git a/kernel/kexec.c b/kernel/kexec.c
index c8a4370e2a34..cf3797b76786 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -1503,7 +1503,8 @@ int kernel_kexec(void)
         }
 
  Unlock:
-        xchg(&kexec_lock, 0);
+        if (!xchg(&kexec_lock, 0))
+                BUG();
 
         return error;
 }