Hi,

quoted

 	/*
 	 * Find a place in the tree where VA potentially will be
 	 * inserted, unless it is merged with its sibling/siblings.

@@ -741,6 +752,10 @@ merge_or_add_vmap_area(struct vmap_area *va,
 		if (sibling->va_end == va->va_start) {
 			sibling->va_end = va->va_end;
 
+			kasan_release_vmalloc(orig_start, orig_end,
+					      sibling->va_start,
+					      sibling->va_end);
+

The same.

The call to kasan_release_vmalloc() is a static inline no-op if
CONFIG_KASAN_VMALLOC is not defined, which I thought was the preferred
way to do things rather than sprinkling the code with ifdefs?

The complier should be smart enough to eliminate all the
orig_state/orig_end stuff at compile time because it can see that it's
not used, so there's no cost in the binary.

Regards,
Daniel