Re: Racket REPL not working

[Zelphir Kaltstahl]

On 5/15/23 18:18, Efraim Flashner wrote:
> On Sun, May 14, 2023 at 09:56:35PM +0000, Zelphir Kaltstahl wrote:
> > Hello Guix users / package maintainers,
> >
> > I updated guix today using `guix pull && guix package -u`, but even before
> > that, I had an issue starting a Racket REPL simply entering `racket`:
> >
> > ~~~~
> > $ racket
> > Segmentation fault (core dumped)
> > ~~~~
> >
> > I am currently at guix:
> >
> > ~~~~
> > $ guix describe --format=channels
> > (list (channel
> >          (name 'guix)
> >          (url"https://git.savannah.gnu.org/git/guix.git";)
> >          (branch "master")
> >          (commit
> >            "c5fa9dd0e96493307cc76ea098a6bca9b076e012")
> >          (introduction
> >            (make-channel-introduction
> >              "9edb3f66fd807b096b48283debdcddccfea34bad"
> >              (openpgp-fingerprint
> >                "BBB0 2DDF 2CEA F6A8 0D1D  E643 A2A0 6DF2 A33A 54FA")))))
> >
> > $ guix describe
> > Generation 42   Mai 14 2023 23:45:08    (current)
> >    guix c5fa9dd
> >      repository URL:https://git.savannah.gnu.org/git/guix.git
> >      branch: master
> >      commit: c5fa9dd0e96493307cc76ea098a6bca9b076e012
> > ~~~~
> >
> > Not sure what is up, or whether it is only on my end for some reason.
> >
> > Also cannot call `racket --version`:
> >
> > ~~~~
> > $ racket --version
> > Segmentation fault (core dumped)
> > ~~~~
> I was able to run 'guix shell racket -- racket --version' with it
> segfaulting. Same thing when I switched to using the same commit that
> you're using.
>
> Can you paste the output of 'lscpu'? I suspect that there might be some
> optimizations being applied during build time and it's been optimized
> with features not available in your CPU.

Hello Efraim,

Here is the output of `lscpu`:

~~~~
$ lscpu
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):                  4
  On-line CPU(s) list:   0-3
Vendor ID:               GenuineIntel
  Model name:            Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz
    CPU family:          6
    Model:               142
    Thread(s) per core:  2
    Core(s) per socket:  2
    Socket(s):           1
    Stepping:            9
    CPU max MHz:         3500,0000
    CPU min MHz:         400,0000
    BogoMIPS:            5799.77
    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 rep_good nopl xtopology nonstop_
                         tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cp
                         l vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1
                          sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsav
                         e avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault
                          epb invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow
                          vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust
                         sgx bmi1 avx2 smep bmi2 erms invpcid mpx rdseed adx sma
                         p clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dt
                         herm ida arat pln pts hwp hwp_notify hwp_act_window hwp
                         _epp md_clear flush_l1d arch_capabilities
Virtualization features:
  Virtualization:        VT-x
Caches (sum of all):
  L1d:                   64 KiB (2 instances)
  L1i:                   64 KiB (2 instances)
  L2:                    512 KiB (2 instances)
  L3:                    4 MiB (1 instance)
NUMA:
  NUMA node(s):          1
  NUMA node0 CPU(s):     0-3
Vulnerabilities:
  Itlb multihit:         KVM: Mitigation: VMX disabled
  L1tf:                  Mitigation; PTE Inversion; VMX conditional cache flushe
                         s, SMT vulnerable
  Mds:                   Mitigation; Clear CPU buffers; SMT vulnerable
  Meltdown:              Mitigation; PTI
  Mmio stale data:       Mitigation; Clear CPU buffers; SMT vulnerable
  Retbleed:              Mitigation; 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; IBRS, IBPB conditional, RSB filling, PBRSB-
                         eIBRS Not affected
  Srbds:                 Mitigation; Microcode
  Tsx async abort:       Not affected
~~~~

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repositories:https://notabug.org/ZelphirKaltstahl