bugzilla-daemon@xxxxxxxxxxxxxxxxxxx writes: > 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 This does sound good. If you can run an older version of the kernel and confirm if the issue goes away, that would be a good place to start. Please update the bug with the older kernel version when you get a chance to run this test. > 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. What's the qemu cmdline for the Haswell host ? Can you try -cpu Haswell on the Broadwell host as well and see if it makes any difference ? > [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:
