Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vegard...

[cascardo/linux.git] / arch / x86 / mm / kmemcheck / kmemcheck.c

diff --git a/arch/x86/mm/kmemcheck/kmemcheck.c b/arch/x86/mm/kmemcheck/kmemcheck.c
index 5b99004..8cc1833 100644 (file)
--- a/arch/x86/mm/kmemcheck/kmemcheck.c
+++ b/arch/x86/mm/kmemcheck/kmemcheck.c
@@ -328,6 +328,20 @@ static void kmemcheck_read_strict(struct pt_regs *regs,
        kmemcheck_shadow_set(shadow, size);
 }
 
+bool kmemcheck_is_obj_initialized(unsigned long addr, size_t size)
+{
+       enum kmemcheck_shadow status;
+       void *shadow;
+
+       shadow = kmemcheck_shadow_lookup(addr);
+       if (!shadow)
+               return true;
+
+       status = kmemcheck_shadow_test(shadow, size);
+
+       return status == KMEMCHECK_SHADOW_INITIALIZED;
+}
+
 /* Access may cross page boundary */
 static void kmemcheck_read(struct pt_regs *regs,
        unsigned long addr, unsigned int size)