Arch Linux

eom.dev

Member

Registered: 2022-02-11

Posts: 57

MongoDB: Illegal instruction (core dumped)

I installed MongoDB from the AUR and ran makepkg with no special configuration or flags.  The compilation outputted a lot of warnings, but no errors, and I was able to install the resulting zst; however, attempting to start the systemd service, or run the mongo command result in:

Illegal instruction (core dumped)

with no other output.  Has anyone seen this with MongoDB and managed to fix the issue?  Are there compiler flags I need to add?  How might I debug the issue?

seth

Member

Registered: 2012-09-03

Posts: 51,532

Re: MongoDB: Illegal instruction (core dumped)

https://wiki.archlinux.org/title/Core_d … _core_dump

compilation outputted

https://dictionary.cambridge.org/gramma … rammar/put

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eom.dev

Member

Registered: 2022-02-11

Posts: 57

Re: MongoDB: Illegal instruction (core dumped)

coredumpctl list

No coredumps found.

The process doesn't run, so there is nothing to which gdb would attach.

Last edited by eom.dev (2023-08-24 15:34:57)

Scimmia

Fellow

Registered: 2012-09-01

Posts: 11,591

Re: MongoDB: Illegal instruction (core dumped)

MongoDB 5+ requires AVX. If you're on a CPU that doesn't have that, you need to use MongoDB 4.4.

loqs

Member

Registered: 2014-03-06

Posts: 17,415

Re: MongoDB: Illegal instruction (core dumped)

What if you disable sandybridge optimization?

diff --git a/PKGBUILD b/PKGBUILD
index 42208d8..4daad95 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -64,6 +64,7 @@ _scons_args=(
   --use-system-boost
   --use-system-zstd
   --runtime-hardening=off
+  --experimental-optimization=-sandybridge
 )
 
 all-flag-vars() {