Floating point exception (core dumped)

[Wenbyn]

Hi,
I installed htop on almalinux 9 and when I type htop I get an error: Floating point exception (core dumped)

[Explorer09]

Which version of htop are you using? You should still be able to use the --version option to get the htop version.

Also, we need more information such as the version of the Linux kernel, and whether you have tested and built the upstream version of htop here (we don't support htop versions provided by Linux distributions directly).

[Wenbyn]

Which version of htop are you using? You should still be able to use the --version option to get the htop version.

Also, we need more information such as the version of the Linux kernel, and whether you have tested and built the upstream version of htop here (we don't support htop versions provided by Linux distributions directly).

Can you tell me step by step how to install htop for OS Almalinux 9 ?

About htop version:

[BenBE]

Can you run htop under gdb and provide the output of bt full, alongside the objdump of the htop binary? Does this happen with htop compiled from the main branch too?

[Zomebodi]

i have the same problem, almalinux 9.4

[natoscott]

@Zomebodi can you provide the information requested? (gdb 'bt full' command output in particular, but also output from objdump -d -S -w /usr/bin/htop). Thanks!

[Zomebodi]

objdump

objdump.txt

gdb) bt full
No stack.
(gdb)

[fasterit]

Just a note: Almalinux 9 inherited the increased CPU baseline (x86_64-v2) from RHEL 9.
Checking the processor capabilities e.g. with the awk scripts from https://unix.stackexchange.com/questions/631217/how-do-i-check-if-my-cpu-supports-x86-64-v2 seems like a good idea.

[BenBE]

Hmmm, no error location for the crash? At least that'd be helpful …

[fasterit]

@BenBE he just ran gdb⏎. And that answers "no stack" on bt full when no executable is being debugged.
As per above, it may well be a mismatch between the processor and -march=x86-64-v2 (or a similar variant used to compile Almalinux 9).

[Zomebodi]

You can get a storage vps on interserver: https://www.interserver.net/vps/storage.html
Try any instance of this type of VPS, they all give the same type of error.

This way, you can determine the cause of the problem.
Best regards.

[fasterit]

@Zomebodi: can you paste the results of cat /proc/cpuinfo for a VM from them where running htop gets you an immediate FP exception?

[Wenbyn]

This is my CPU Info:
3 CPU and 4 GB RAM

[fasterit]

x86-64-v2 should be fine on a ~Haswell CPU BUT https://www.intel.com/content/www/us/en/support/articles/000090280/processors/intel-xeon-processors.html. Let's see what CPU @Zomebodi has.