Hi, The patch has been in v4.15.y and v4.16.y, but not in v4.14.y: de0aa7b2f97d ("PCI: hv: Fix 2 hang issues in hv_compose_msi_msg()") The second issue described in the changelog of the commit can happen to v4.14.y too. Since the v4.14.y is a longterm kernel, we should apply the patch to it. I have verified the commit can be cherry-picked cleanly. Thanks! -- Dexuan