I have compiled the code in the avx2 folder, and encountered this error while calling
int crypto_sign_verify(const uint8_t *sig, size_t siglen, const uint8_t *m, size_t mlen, const uint8_t *pk)
I have searched (found here: https://bugs.kde.org/show_bug.cgi?id=426330 ) for the instruction bytes and they seem to correspond to an AVX512 instruction, I can't pinpoint which instruction more exactly.
This is the lscpu info for the machine that has this error (it has avx2 support):
`
lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
Address sizes: 48 bits physical, 48 bits virtual
CPU(s): 2
On-line CPU(s) list: 0,1
Thread(s) per core: 2
Core(s) per socket: 1
Socket(s): 1
NUMA node(s): 1
Vendor ID: AuthenticAMD
CPU family: 23
Model: 1
Model name: AMD EPYC 7571
Stepping: 2
CPU MHz: 2199.782
BogoMIPS: 4399.56
Hypervisor vendor: KVM
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdt
scp lm constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid tsc_known_freq pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes
xsave avx f16c rdrand hypervisor lahf_lm cmp_legacy cr8_legacy abm sse4a misalignsse 3dnowprefetch topoext vmmcall fsgsbase bmi1 avx2 smep
bmi2 rdseed adx smap clflushopt sha_ni xsaveopt xsavec xgetbv1 clzero xsaveerptr arat npt nrip_save
`
I have tested on a different machine that has an intel processor and it works.
`
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Address sizes: 39 bits physical, 48 bits virtual
Byte Order: Little Endian
CPU(s): 8
On-line CPU(s) list: 0-7
Vendor ID: GenuineIntel
Model name: Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz
CPU family: 6
Model: 142
Thread(s) per core: 2
Core(s) per socket: 4
Socket(s): 1
Stepping: 10
CPU max MHz: 4200,0000
CPU min MHz: 400,0000
BogoMIPS: 4199.88
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mc
a cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss
ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art
arch_perfmon pebs bts repgood nopl xtopology nonstop
tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cp
l vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid ss
e4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes
xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_f
ault epb invpcid_single pti ssbd ibrs ibpb stibp tpr_sh
adow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adj
ust sgx bmi1 avx2 smep bmi2 erms invpcid mpx rdseed adx
smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsave
s dtherm ida arat pln pts hwp hwp_notify hwp_act_window
hwp_epp md_clear flush_l1d arch_capabilities
Virtualization features:
Virtualization: VT-x
`
My problem is that the avx2 is supported for both machines but the one with the error doesn't support AVX512 I think.
What flag must I look for in order to decide if to use the code in the avx2 folder or the one in the ref one?
Hello,
I have compiled the code in the avx2 folder, and encountered this error while calling
int crypto_sign_verify(const uint8_t *sig, size_t siglen, const uint8_t *m, size_t mlen, const uint8_t *pk)from cgo (golang):
SIGILL: illegal instruction PC=0xd0f392 m=7 sigcode=2 signal arrived during cgo execution instruction bytes: 0x62 0xf1 0x7f 0x28 0x7f 0x7 0x62 0xf1 0x7f 0x28 0x7f 0x47 0x1 0x62 0xf1 0x7fI have searched (found here: https://bugs.kde.org/show_bug.cgi?id=426330 ) for the instruction bytes and they seem to correspond to an AVX512 instruction, I can't pinpoint which instruction more exactly.
This is the
lscpuinfo for the machine that has this error (it has avx2 support): ` lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian Address sizes: 48 bits physical, 48 bits virtual CPU(s): 2 On-line CPU(s) list: 0,1 Thread(s) per core: 2 Core(s) per socket: 1 Socket(s): 1 NUMA node(s): 1 Vendor ID: AuthenticAMD CPU family: 23 Model: 1 Model name: AMD EPYC 7571 Stepping: 2 CPU MHz: 2199.782 BogoMIPS: 4399.56 Hypervisor vendor: KVM Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdt scp lm constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid tsc_known_freq pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand hypervisor lahf_lm cmp_legacy cr8_legacy abm sse4a misalignsse 3dnowprefetch topoext vmmcall fsgsbase bmi1 avx2 smep bmi2 rdseed adx smap clflushopt sha_ni xsaveopt xsavec xgetbv1 clzero xsaveerptr arat npt nrip_save`
I have tested on a different machine that has an intel processor and it works. ` Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Address sizes: 39 bits physical, 48 bits virtual Byte Order: Little Endian CPU(s): 8 On-line CPU(s) list: 0-7 Vendor ID: GenuineIntel Model name: Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz CPU family: 6 Model: 142 Thread(s) per core: 2 Core(s) per socket: 4 Socket(s): 1 Stepping: 10 CPU max MHz: 4200,0000 CPU min MHz: 400,0000 BogoMIPS: 4199.88 Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mc a cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts repgood nopl xtopology nonstop tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cp l vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid ss e4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_f ault epb invpcid_single pti ssbd ibrs ibpb stibp tpr_sh adow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adj ust sgx bmi1 avx2 smep bmi2 erms invpcid mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsave s dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp md_clear flush_l1d arch_capabilities Virtualization features: Virtualization: VT-x
`
My problem is that the avx2 is supported for both machines but the one with the error doesn't support AVX512 I think.
What flag must I look for in order to decide if to use the code in the avx2 folder or the one in the ref one?