6415680: (bf) MappedByteBuffer.get() can provoke crash with EXCEPTION_IN_PAGE_ERROR
Summary: Made changes in topLevelExceptionFilter for handling unsafe single value invalid memory access failures, equivalent of JDK-4454115.
Reviewed-by: dholmes, dlong
--- a/src/hotspot/os/windows/os_windows.cpp Tue Nov 14 18:08:35 2017 -0800
+++ b/src/hotspot/os/windows/os_windows.cpp Wed Nov 15 00:49:57 2017 -0800
@@ -2487,6 +2487,20 @@
} // /EXCEPTION_ACCESS_VIOLATION
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+ if (exception_code == EXCEPTION_IN_PAGE_ERROR) {
+ CompiledMethod* nm = NULL;
+ JavaThread* thread = (JavaThread*)t;
+ if (in_java) {
+ CodeBlob* cb = CodeCache::find_blob_unsafe(pc);
+ nm = (cb != NULL) ? cb->as_compiled_method_or_null() : NULL;
+ }
+ if ((thread->thread_state() == _thread_in_vm &&
+ thread->doing_unsafe_access()) ||
+ (nm != NULL && nm->has_unsafe_access())) {
+ return Handle_Exception(exceptionInfo, SharedRuntime::handle_unsafe_access(thread, (address)Assembler::locate_next_instruction(pc)));
+ }
+ }
+
if (in_java) {
switch (exception_code) {
case EXCEPTION_INT_DIVIDE_BY_ZERO: