1 files changed, 1 insertions, 1 deletions

diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
index 613cd83e8c0c..a085c560b4a5 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -320,7 +320,7 @@ static ssize_t tlbflush_write_file(struct file *file,
         if (kstrtos8(buf, 0, &shift))
                 return -EINVAL;
 
-        if (shift > 64)
+        if (shift < -1 || shift >= BITS_PER_LONG)
                 return -EINVAL;
 
         tlb_flushall_shift = shift;