FWIW: here's the info for the GUEST amd64 VM that has been panicking...
20180616 GUEST uname -a: Linux haven 3.13.0-151-generic #201-Ubuntu SMP Wed May 30 14:22:13 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux 20180616 GUEST cpuinfo: processor : 0 vendor_id : AuthenticAMD cpu family : 21 model : 2 model name : AMD Opteron 63xx class CPU stepping : 0 microcode : 0x1000065 cpu MHz : 4018.284 cache size : 512 KB physical id : 0 siblings : 1 core id : 0 cpu cores : 1 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt pdpe1gb lm rep_good nopl extd_apicid pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 x2apic popcnt aes xsave avx f16c hypervisor lahf_lm cmp_legacy svm cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw xop fma4 tbm arat retpoline retpoline_amd vmmcall bmi1 bogomips : 8036.56 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: 20180616 GUEST dmidecode: https://pastebin.com/bgEvr6LK 20180616 GUEST dmesg (full): https://pastebin.com/fBZs7Mit -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1776575 Title: 14.04.5 safe-upgrade from QEMU 2.0.0+dfsg-2ubuntu1.42 to QEMU 2.0.0 +dfsg-2ubuntu1.43 kernel panics amd64 VM guests To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1776575/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
