1 files changed, 2 insertions, 3 deletions
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index 3bd7e6eebf31..d2c1f6208d62 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -293,13 +293,12 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
        memset(p->thread.ptrace_bps, 0, sizeof(p->thread.ptrace_bps));
        if (unlikely(test_tsk_thread_flag(me, TIF_IO_BITMAP))) {
-                p->thread.io_bitmap_ptr = kmalloc(IO_BITMAP_BYTES, GFP_KERNEL);
+                p->thread.io_bitmap_ptr = kmemdup(me->thread.io_bitmap_ptr,
+                                                  IO_BITMAP_BYTES, GFP_KERNEL);
                if (!p->thread.io_bitmap_ptr) {
                        p->thread.io_bitmap_max = 0;
                        return -ENOMEM;
                }
-                memcpy(p->thread.io_bitmap_ptr, me->thread.io_bitmap_ptr,
-                                IO_BITMAP_BYTES);
                set_tsk_thread_flag(p, TIF_IO_BITMAP);
        }