a recent update, possibly 20210307 has made cpu frequency reporting go wrong
this is a 3800x, it never goes above 4.5 ghz, but now it shows a core running at 5.38 ghz, which its not, temperatures are normal, idling at 28-30C
cat /proc/cpuinfo | sort -r | grep MHz:
cpu MHz : 5381.542
cpu MHz : 3900.000
cpu MHz : 3621.831
cpu MHz : 2200.000
cpu MHz : 2200.000
cpu MHz : 2200.000
cpu MHz : 2200.000
cpu MHz : 2200.000
cpu MHz : 2200.000
cpu MHz : 2200.000
cpu MHz : 2200.000
cpu MHz : 2200.000
cpu MHz : 2200.000
cpu MHz : 2200.000
cpu MHz : 2200.000
cpu MHz : 2200.000
lscpu:
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
Address sizes: 43 bits physical, 48 bits virtual
CPU(s): 16
On-line CPU(s) list: 0-15
Thread(s) per core: 2
Core(s) per socket: 8
Socket(s): 1
NUMA node(s): 1
Vendor ID: AuthenticAMD
CPU family: 23
Model: 113
Model name: AMD Ryzen 7 3800X 8-Core Processor
Stepping: 0
Frequency boost: enabled
CPU MHz: 2200.000
CPU max MHz: 5381.5420
CPU min MHz: 2200.0000
BogoMIPS: 7785.17
Virtualization: AMD-V
L1d cache: 256 KiB
L1i cache: 256 KiB
L2 cache: 4 MiB
L3 cache: 32 MiB
NUMA node0 CPU(s): 0-15
Vulnerability Itlb multihit: Not affected
Vulnerability L1tf: Not affected
Vulnerability Mds: Not affected
Vulnerability Meltdown: Not affected
Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl and seccomp
Vulnerability Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization
Vulnerability Spectre v2: Mitigation; Full AMD retpoline, IBPB conditional, STIBP conditional, RSB fill
ing
Vulnerability Srbds: Not affected
Vulnerability Tsx async abort: Not affected
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflu
sh mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant
_tsc rep_good nopl nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq mon
itor ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand lahf
lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osv
w ibs skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx
cpb cat_l3 cdp_l3 hw_pstate sme ssbd mba sev ibpb stibp vmmcall sev_es fsgsb
ase bmi1 avx2 smep bmi2 cqm rdt_a rdseed adx smap clflushopt clwb sha_ni xsav
eopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local
clzero irperf xsaveerptr rdpru wbnoinvd arat npt lbrv svm_lock nrip_save tsc
scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic v_vms
ave_vmload vgif umip rdpid overflow_recov succor smca