Instant crash (exit code 132) beyond v2.2.2

[tinhoff]

Hi,

sadly I can not upgrade beyond 2.2.2 due to:

./zerofs-linux-amd64-pgo 
Ungültiger Maschinenbefehl (Speicherabzug geschrieben)

strace ./zerofs-linux-amd64-pgo 
execve("./zerofs-linux-amd64-pgo", ["./zerofs-linux-amd64-pgo"], 0x7fffd84c15d0 /* 22 vars */) = 0
mmap(NULL, 3248, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x70dbe95f5000
arch_prctl(ARCH_SET_FS, 0x70dbe95f5be8) = 0
set_tid_address(0x70dbe944b0d8)         = 3845764
--- SIGILL {si_signo=SIGILL, si_code=ILL_ILLOPN, si_addr=0x70dbe6435e32} ---
+++ killed by SIGILL (core dumped) +++
Ungültiger Maschinenbefehl (Speicherabzug geschrieben)

Seems pgo related? Not sure, which CPU instruction is missing, its an pretty old ATOM C3000series

# cat /proc/cpuinfo 
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 95
model name	: Intel(R) Atom(TM) CPU C3758 @ 2.20GHz
stepping	: 1
microcode	: 0x3e
cpu MHz		: 800.008
cache size	: 2048 KB
physical id	: 0
siblings	: 8
core id		: 0
cpu cores	: 8
apicid		: 0
initial apicid	: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 21
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 art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg cx16 xtpr pdcm sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave rdrand lahf_lm 3dnowprefetch cpuid_fault epb cat_l2 ssbd ibrs ibpb stibp tpr_shadow flexpriority ept vpid ept_ad fsgsbase tsc_adjust smep erms mpx rdt_a rdseed smap clflushopt intel_pt sha_ni xsaveopt xsavec xgetbv1 xsaves dtherm arat pln pts vnmi md_clear arch_capabilities
vmx flags	: vnmi preemption_timer posted_intr invvpid ept_x_only ept_ad ept_1gb flexpriority apicv tsc_offset vtpr mtf vapic ept vpid unrestricted_guest vapic_reg vid ple shadow_vmcs
bugs		: spectre_v1 spectre_v2 spec_store_bypass rfds
bogomips	: 4400.00
clflush size	: 64
cache_alignment	: 64
address sizes	: 39 bits physical, 48 bits virtual
power management:

Would it be possible, that you could additionally build a generic release, which would be more compatible?

[Barre]

Hi,

Your CPU doesn't support AVX2 / x86-64-v3, I'll just require x86-64-v2 in the next release as gains are probably very marginal here.

[Barre]

This release should fix it for you: https://github.com/Barre/ZeroFS/releases/tag/v1.4.2

[tinhoff]

Works like a charm again. Thanks for updating this (and so fast).
Can't wait to see, where this project is going longterm. Love it!
Still didn't found the time to play with CSI here...

[Barre]

Thank you!