CVE-2025-38337 jbd2: fix data-race and null-ptr-deref in jbd2_journal_dirty_metadata()

In the Linux kernel, the following vulnerability has been resolved: jbd2: fix data-race and null-ptr-deref in jbd2journaldirtymetadata Since handle-htransaction may be a NULL pointer, so we should change it to call ishandleabortedhandle first before dereferencing it. And the following data-race w...