------- Comment From fre...@de.ibm.com 2022-10-26 11:48 EDT------- Digging into details gives:
The reason seems to be that the patch moves the decission about if arch randomness is available to setup.c function setup_randomness(). This code uses a static_key s390_arch_random_available. But in the Canonical kernel the initialization function for the jump labels (where the static keys are based on) jump_label_init() is called in generic start_kernel() wheres in the upstream kernel the init function is called early in setup_arch(). So maybe another patch which is moving the jump_label_init() from start_kernel() to setup_arch() is missing here. I did NOT install any security fixes ... will try. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1994601 Title: [UBUNTU 18.04] Ubuntu 18.04 crashes during IPL Status in Ubuntu on IBM z Systems: Incomplete Status in linux package in Ubuntu: Confirmed Bug description: ---Problem Description--- Ubuntu 18.04 crashes during IPL with no output on the console. Contact Information = Viktor Mihajlovski <mihaj...@de.ibm.com> ---uname output--- n/a Machine Type = 3096 ---Debugger--- A debugger is not configured ---Steps to Reproduce--- Install Ubuntu 18.04 as a KVM guest using the following command: virt-install -n bionic --cdrom /var/lib/libvirt/images/ubuntu-18.04.5-server-s390x.iso --memory 2048 --disk size=8 then reboot. Stack trace output: no Oops output: no == Comment: #1 - Viktor Mihajlovski <mihaj...@de.ibm.com> - 2022-10-25 10:48:30 == Installing under z/VM leads to the same failure. == Comment: #2 - Viktor Mihajlovski <mihaj...@de.ibm.com> - 2022-10-25 10:55:10 == I have captured a dump using virsh dump --memory-only. The output of crash log is uploaded == Comment: #7 - Harald Freudenberger <fre...@de.ibm.com> - 2022-10-26 07:33:52 == Looks like all ubuntu 18.04 installations on s390 are not working any more. It is not an issue with z14 but z17 also fails to run a fresh installed ubuntu 18.04. == Comment: #8 - Harald Freudenberger <fre...@de.ibm.com> - 2022-10-26 08:25:52 == when I use the 'advanced installation' where I am able to choose the kernel package and then choose the 4.15.0-50 generic the installed Ubuntu 18.04 comes up fine. So this issue is somewhere between kernel 4.15.0-50 and 4.15.0-194. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1994601/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
