8050978: Fix bad field access check in C1 and C2
Summary: JCK8 test vm/constantpool/accessControl/accessControl004/accessControl00402m3/accessControl00402m3.html fails with -Xbatch -Xcomp due to bad field access check in C1 and C2. Fix: In ciField::ciField(), just before the canonical holder is stored into the _holder variable (and which is used by ciField::will_link()) perform an additional access check with the holder declared in the class file. If this check fails, store the declared holder instead and ciField::will_link() will bail out compilation for this field later on. Then, the interpreter will throw an PrivilegedAccessException at runtime.
Reviewed-by: kvn, vlivanov
Contributed-by: andreas.schoesser@sap.com
--- a/hotspot/src/share/vm/ci/ciField.cpp Wed Jul 23 07:53:24 2014 +0200
+++ b/hotspot/src/share/vm/ci/ciField.cpp Fri Jul 18 09:04:01 2014 +0200
@@ -138,6 +138,17 @@
return;
}
+ // Access check based on declared_holder. canonical_holder should not be used
+ // to check access because it can erroneously succeed. If this check fails,
+ // propagate the declared holder to will_link() which in turn will bail out
+ // compilation for this field access.
+ if (!Reflection::verify_field_access(klass->get_Klass(), declared_holder->get_Klass(), canonical_holder, field_desc.access_flags(), true)) {
+ _holder = declared_holder;
+ _offset = -1;
+ _is_constant = false;
+ return;
+ }
+
assert(canonical_holder == field_desc.field_holder(), "just checking");
initialize_from(&field_desc);
}