The openssl-1.0.2k as of RHEL-7.4 contains sophisticated highly optimized code for ECDSA computations with NIST P256 curve. However when this code is run inside virtual machine created with qemu-system-x86_64 from current EPEL 7 on new AMD CPU, it produces erroneous results causing failure. The failure can be observed with command such as: openssl genpkey -algorithm EC -pkeyopt ec_paramgen_curve:prime256v1 Error generating key 140093439174560:error:2D06D075:FIPS routines:fips_pkey_signature_test:test failure:fips_post.c:168: 140093439174560:error:2D08E06B:FIPS routines:FIPS_CHECK_EC:pairwise test failed:ec_key.c:249: Note that the FIPS mentioned in the error message is misleading, the machine does not have to run in the FIPS mode. Also cat /proc/cpuinfo shows some weird combination of CPU flags which is also suspicious. processor : 1 vendor_id : AuthenticAMD cpu family : 6 model : 6 model name : QEMU Virtual CPU version 2.0.0 stepping : 3 cpu MHz : 2599.975 cache size : 512 KB physical id : 1 siblings : 1 core id : 0 cpu cores : 1 apicid : 1 initial apicid : 1 fpu : yes fpu_exception : yes cpuid level : 4 wp : yes flags : fpu pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx lm art nopl pni cx16 popcnt hypervisor lahf_lm svm abm sse4a bogomips : 71786.41 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: This issue cannot be reproduced on newer qemu-system such as the one from Fedora 26.