x86/vdso: Add __user annotation to VDSO32_SYMBOL
authorMathias Krause <minipli@googlemail.com>
Sun, 2 Sep 2012 21:31:41 +0000 (23:31 +0200)
committerIngo Molnar <mingo@kernel.org>
Wed, 5 Sep 2012 08:52:23 +0000 (10:52 +0200)
The address calculated by VDSO32_SYMBOL() is a pointer into
userland. Add the __user annotation to fix related sparse
warnings in its users.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Andy Lutomirski <luto@MIT.EDU>
Link: http://lkml.kernel.org/r/1346621506-30857-3-git-send-email-minipli@googlemail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/include/asm/vdso.h

index bb0522850b74c2ae780b6c81981efde9f76f2aa3..fddb53d63915b56129371eb39fc1123dec34ff70 100644 (file)
@@ -11,7 +11,8 @@ extern const char VDSO32_PRELINK[];
 #define VDSO32_SYMBOL(base, name)                                      \
 ({                                                                     \
        extern const char VDSO32_##name[];                              \
-       (void *)(VDSO32_##name - VDSO32_PRELINK + (unsigned long)(base)); \
+       (void __user *)(VDSO32_##name - VDSO32_PRELINK +                \
+                       (unsigned long)(base));                         \
 })
 #endif