Server with Intel Xeon Gold 6230 fails to boot after upgrading to intel-microcode version 3.20220809.0ubuntu0.22.04.1

Bắt đầu bằng cách xem xét bug Launchpad được liên kết và hai phiên bản intel-microcode được nêu trong báo cáo. Tái hiện tình trạng treo khi khởi động trên cấu hình Intel Xeon Gold 6230, so sánh việc downgrade với workaround dis_ucode_ldr; được xem là hoàn tất khi xác nhận được bản sửa lỗi hoặc ghi nhận được một tình trạng không tương thích.

Boot process get stuck at booting SMP configuration. Can be solved by downgrading intel-microcode to version 3.20210608.2ubuntu1 or passing the kernel parameter dis_ucode_ldr

LP bug: https://bugs.launchpad.net/ubuntu/+source/intel-microcode/+bug/2002626

$ lscpu 
Architecture:            x86_64
  CPU op-mode(s):        32-bit, 64-bit
  Address sizes:         46 bits physical, 48 bits virtual
  Byte Order:            Little Endian
CPU(s):                  80
  On-line CPU(s) list:   0-79
Vendor ID:               GenuineIntel
  Model name:            Intel(R) Xeon(R) Gold 6230 CPU @ 2.10GHz
    CPU family:          6
    Model:               85
    Thread(s) per core:  2
    Core(s) per socket:  20
    Socket(s):           2
    Stepping:            7
    CPU max MHz:         3900,0000
    CPU min MHz:         800,0000
    BogoMIPS:            4200.00
    Flags:               fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse3
                         6 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb r
                         dtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopolog
                         y 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 x2ap
                         ic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm a
                         bm 3dnowprefetch cpuid_fault epb cat_l3 cdp_l3 invpcid_single ssbd mba
                          ibrs ibpb stibp ibrs_enhanced tpr_shadow vnmi flexpriority ept vpid e
                         pt_ad fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid cqm mpx rdt
                         _a avx512f avx512dq rdseed adx smap clflushopt clwb intel_pt avx512cd 
                         avx512bw avx512vl xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc
                          cqm_mbm_total cqm_mbm_local dtherm ida arat pln pts pku ospke avx512_
                         vnni md_clear flush_l1d arch_capabilities
Virtualization features: 
  Virtualization:        VT-x
Caches (sum of all):     
  L1d:                   1,3 MiB (40 instances)
  L1i:                   1,3 MiB (40 instances)
  L2:                    40 MiB (40 instances)
  L3:                    55 MiB (2 instances)
NUMA:                    
  NUMA node(s):          2
  NUMA node0 CPU(s):     0-19,40-59
  NUMA node1 CPU(s):     20-39,60-79
Vulnerabilities:         
  Itlb multihit:         KVM: Mitigation: VMX disabled
  L1tf:                  Not affected
  Mds:                   Not affected
  Meltdown:              Not affected
  Mmio stale data:       Vulnerable: Clear CPU buffers attempted, no microcode; SMT vulnerable
  Retbleed:              Mitigation; Enhanced IBRS
  Spec store bypass:     Mitigation; Speculative Store Bypass disabled via prctl and seccomp
  Spectre v1:            Mitigation; usercopy/swapgs barriers and __user pointer sanitization
  Spectre v2:            Mitigation; Enhanced IBRS, IBPB conditional, RSB filling, PBRSB-eIBRS 
                         SW sequence
  Srbds:                 Not affected
  Tsx async abort:       Mitigation; TSX disabled