https://bugzilla.kernel.org/show_bug.cgi?id=197813 --- Comment #4 from Carlos Lopez (clopezbelenguer@xxxxxxxxxxxxxx) --- At the moment since we are using PRoxmox and they build the distro around the ubuntu kernel we could wait until the release of ubuntu 18.04 when they build the next versión to try a new kernel. but Considering we haven't the skills to debug more thoroughly the panic, atm, we are thinking in Downgrade the platform to an older one and see if the problem persist. We have been experiencing worse and worse behaviour at every update of the kernel/distro Since we have another machine with an older processor from the same family and we are not experiencing any issues i attach cpuinfo of the problematic one and the goodold one in case is relevant. [KVM WITh panics/frozen vm] Kernel 4.13.13-5-pve #1 SMP PVE 4.13.13-38 x86_64 processor : 40 vendor_id : GenuineIntel cpu family : 6 model : 79 model name : Intel(R) Xeon(R) CPU E5-2650 v4 @ 2.20GHz stepping : 1 microcode : 0xb000021 cpu MHz : 2199.991 cache size : 30720 KB physical id : 0 siblings : 24 core id : 10 cpu cores : 12 apicid : 21 initial apicid : 21 fpu : yes fpu_exception : yes cpuid level : 20 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb cat_l3 cdp_l3 invpcid_single intel_pt tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm rdt_a rdseed adx smap xsaveopt cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local dtherm ida arat pln pts bugs : cpu_meltdown spectre_v1 spectre_v2 bogomips : 4399.98 clflush size : 64 cache_alignment : 64 address sizes : 46 bits physical, 48 bits virtual power management: [KVM WITHOUT PROBLEMS] Kernel 4.4.95-1-pve #1 SMP PVE 4.4.95-99 processor : 39 vendor_id : GenuineIntel cpu family : 6 model : 63 model name : Intel(R) Xeon(R) CPU E5-2660 v3 @ 2.60GHz stepping : 2 microcode : 0x31 cpu MHz : 2743.203 cache size : 25600 KB physical id : 1 siblings : 20 core id : 12 cpu cores : 10 apicid : 57 initial apicid : 57 fpu : yes fpu_exception : yes cpuid level : 15 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm epb tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid cqm xsaveopt cqm_llc cqm_occup_llc dtherm ida arat pln pts bugs : bogomips : 5201.14 clflush size : 64 cache_alignment : 64 address sizes : 46 bits physical, 48 bits virtual power management: -- You are receiving this mail because: You are watching the assignee of the bug.