[PATCH] Prevent trace call into unloaded module text

[Wu Fengguang]

Add marker_synchronize_unregister() before module unloading.
This prevents possible trace calls into unloaded module text.

Signed-off-by: Wu Fengguang <[EMAIL PROTECTED]>
---
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index a87f45e..64f38b3 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -2102,5 +2102,6 @@ void kvm_exit(void)
        kvm_arch_exit();
        kvm_exit_debug();
        __free_page(bad_page);
+       marker_synchronize_unregister();
 }
 EXPORT_SYMBOL_GPL(kvm_exit);
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