Hi Johannes, Ralf, meanwhile I have closed the test with Leap 42.3 and the fix proposal from Ralf. The result is o.k.. A normal reboot/shutdown also a hard stop (Poweroff / virsh destroy) of the Initiater systems (SLES11SP4/SLSES12SP2) doesn't shown the abnormal behavior which is reported. @Johannes: There are any further tests necessary to confirm? What is the next step please? At the moment I build my own kernel based on Leap 42.3. and the fix from Ralf. It is planed to takeover the fix from Ralf? When can I expect the fix, so it is no longer necessary to build my own kernel? Thanks anyone for the effort to solve this issue! Best regards Holger