Can you please give the following test kernel a try and let me know if that resolves the issue? https://kernel.ubuntu.com/~juergh/lp1818645/
-- 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/1818645 Title: Ubuntu18.04.01: [Power9] power8 Compat guest(RHEL7.6) crashes during guest boot with > 256G of memory (kernel/kvm) Status in The Ubuntu-power-systems project: Invalid Status in linux package in Ubuntu: Invalid Status in linux source package in Bionic: New Bug description: == SRU Justification == Rebooting a PowerPC VM with > 256G of memory results in a guest crash. == Fix == Backport commit 46dec40fb741 ("KVM: PPC: Book3S HV: Don't truncate HPTE index in xlate function"). == Regression Potential == Low. Fix is trivial. == Test Case == Create a PowerPC VM with > 256G of memory and reboot it repeatedly. == Original description == == Comment: #0 - Satheesh Rajendran <sathe...@in.ibm.com> - 2019-02-28 04:38:22 == ---Problem Description--- Power8 Compat guest(RHEL 7.6) crashes during guest boot with > 256G of memory (kernel/kvm) Contact Information = sathe...@in.ibm.com ---uname output--- Host Kernel: 4.15.0-1016-ibm-gt ii qemu-system-ppc 1:2.11+dfsg- 1ubuntu7.8-1ibm3 ppc64el QEMU full system emulation binaries (ppc) ii libvirt-bin 4.0.0-1ubuntu8.6 ppc64el programs for the libvirt library Guest kernel: 3.10.0-957.5.1.el7.ppc64le (rhel7.6 zstream) Machine Type = power9 ppc64le ---Steps to Reproduce--- 1. Boot a power8 compat guest with memory >256G virsh define avocado-vt-vm1;virsh start --console avocado-vt-vm1 (guest xml sosreport attached) ----Guest crashes while booting 2019-02-28 10:36:44.752+0000: starting up libvirt version: 4.0.0, package: 1ubuntu8.6 (Christian Ehrhardt <christian.ehrha...@canonical.com> Fri, 09 Nov 2018 07:42:01 +0100), qemu version: 2.11.1(Debian 1:2.11+dfsg-1ubuntu7.8-1ibm3), hostname: cs-host-f37-ac922-3.pok.ibm.com LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin QEMU_AUDIO_DRV=none /usr/bin/qemu-system-ppc64 -name guest=avocado-vt-vm1,debug-threads=on -S -object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-15-avocado-vt-vm1/master-key.aes -machine pseries-2.11,accel=kvm,usb=off,dump-guest-core=off -m 264192 -realtime mlock=off -smp 256,sockets=256,cores=1,threads=1 -uuid f4e14f88-bf1b-4cc3-b6d6-958d514d6c18 -display none -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/domain-15-avocado-vt-vm1/monitor.sock,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -boot strict=on -device qemu-xhci,id=usb,bus=pci.0,addr=0x3 -device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x2 -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x4 -drive file=/home/sath/avocado-fvt-wrapper/data/avocado-vt/images/rhel76-ppc64le.qcow2,format=qcow2,if=none,id=drive-scsi0-0-0-0 -device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,bootindex=1 -netdev tap,fd=28,id=hostnet0,vhost=on,vhostfd=30 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:fc:fd:fe,bus=pci.0,addr=0x1 -chardev pty,id=charserial0 -device spapr-vty,chardev=charserial0,id=serial0,reg=0x30000000 -chardev socket,id=charchannel0,path=/var/lib/libvirt/qemu/channel/target/domain-15-avocado-vt-vm1/org.qemu.guest_agent.0,server,nowait -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=org.qemu.guest_agent.0 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 -msg timestamp=on 2019-02-28 10:36:44.759+0000: 19598: info : libvirt version: 4.0.0, package: 1ubuntu8.6 (Christian Ehrhardt <christian.ehrha...@canonical.com> Fri, 09 Nov 2018 07:42:01 +0100) 2019-02-28 10:36:44.759+0000: 19598: info : hostname: cs-host-f37-ac922-3 2019-02-28 10:36:44.759+0000: 19598: info : virObjectUnref:350 : OBJECT_UNREF: obj=0x76d594111710 2019-02-28T10:36:44.781703Z qemu-system-ppc64: -chardev pty,id=charserial0: char device redirected to /dev/pts/3 (label charserial0) 2019-02-28T10:36:44.781945Z qemu-system-ppc64: warning: Number of SMP cpus requested (256) exceeds the recommended cpus supported by KVM (128) 2019-02-28T10:36:44.781953Z qemu-system-ppc64: warning: Number of hotpluggable cpus requested (256) exceeds the recommended cpus supported by KVM (128) 2019-02-28 10:37:18.060+0000: shutting down, reason=crashed 2019-02-28T10:37:18.071969Z qemu-system-ppc64: terminating on signal 15 from pid 14056 (/usr/sbin/libvirtd) *Additional Instructions for sathe...@in.ibm.com: -Post a private note with access information to the machine that the bug is occuring on. == Comment: #3 - Satheesh Rajendran <sathe...@in.ibm.com> - 2019-02-28 04:51:45 == Possible Upstream fix: https://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc.git/commit/?h=kvm-ppc-next&id=46dec40fb741f00f1864580130779aeeaf24fb3d To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/1818645/+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
