x86: Turn the copy_from_user check into an (optional) compile time warning

[mv-sheeva.git] / arch / x86 / lib / usercopy_32.c

diff --git a/arch/x86/lib/usercopy_32.c b/arch/x86/lib/usercopy_32.c
index 8498684e45b0d0864b490a2673daffdc0db01241..e218d5df85ff23445c277c2fe89d611dcab433ae 100644 (file)
--- a/arch/x86/lib/usercopy_32.c
+++ b/arch/x86/lib/usercopy_32.c
@@ -883,3 +883,9 @@ _copy_from_user(void *to, const void __user *from, unsigned long n)
        return n;
 }
 EXPORT_SYMBOL(_copy_from_user);
+
+void copy_from_user_overflow(void)
+{
+       WARN(1, "Buffer overflow detected!\n");
+}
+EXPORT_SYMBOL(copy_from_user_overflow);