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

[bugzilla-daemon@bugzilla.kernel.org]

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

--- Comment #5 from Bandan Das (bsd@redhat.com) ---
bugzilla-daemon@bugzilla.kernel.org writes:

> 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

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:

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