[Bug 197813] KVM: entry failed, hardware error 0x5

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=197813

--- Comment #4 from Carlos Lopez (clopezbelenguer@es.amnesty.org) ---
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:

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