1 files changed, 3 insertions, 0 deletions

diff --git a/include/asm-sparc64/mmu_context.h b/include/asm-sparc64/mmu_context.h
index 8d129032013e..9fc225ed5500 100644
--- a/include/asm-sparc64/mmu_context.h
+++ b/include/asm-sparc64/mmu_context.h
@@ -76,6 +76,9 @@ static inline void switch_mm(struct mm_struct *old_mm, struct mm_struct *mm, str
         unsigned long ctx_valid, flags;
         int cpu;
 
+        if (unlikely(mm == &init_mm))
+                return;
+
         spin_lock_irqsave(&mm->context.lock, flags);
         ctx_valid = CTX_VALID(mm->context);
         if (!ctx_valid)