Issue #20616 has been updated by alanwu (Alan Wu). You could try running with the jemalloc `MALLOC_CONF='abort:true'` environment variable to get a crash when the munmap() error happens. That might get you more information with a different backtrace. I would also check if the code runs close to using all available memory. ---------------------------------------- Bug #20616: <jemalloc>: Error in munmap(): Invalid argument https://bugs.ruby-lang.org/issues/20616#change-109010 * Author: damuz91 (David Muñoz) * Status: Open * ruby -v: 3.3.2 (2024-05-30 revision e5a195edf6) [aarch64-linux] * Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN ---------------------------------------- Good day! Description: I am getting the following error randomly. I run the offending code every 10 minutes and some times it crashes and some it doesn't, I am clueless. The error states: ``` <jemalloc>: Error in munmap(): Invalid argument [BUG] Segmentation fault at 0x0000ffff69bfe000 ruby 3.3.2 (2024-05-30 revision e5a195edf6) [aarch64-linux] ``` I've published the backtrace: https://gist.github.com/damuz91/429bed215c7ff13ee33e3968d52a4729 My app runs Sidekiq which runs the offending code, i've submitted the code in Sidekiq but maintainer says it's not related to Sidekiq. ``` OS: Amazon Linux 2 aarch64 Ruby version: 3.3.2 Rails version: 7.1.3.4 ``` The offending line states: ``` Jul 05 05:00:01 subsystems-sync sidekiq[11766]: c:0048 p:0049 s:0277 e:000276 METHOD /home/ec2-user/production/sync-backend/releases/370/app/services/scheduler/partial_sync_scheduler_job.rb:6 ``` and my source code looks like this: ``` class Scheduler::PartialSyncSchedulerJob include Sidekiq::Job def perform(location_ids = []) locations = location_ids.any? ? Location.where(id: location_ids) : Location.enabled.should_sync.includes(:customer).where.not(customers: {service_object: ['xxx', 'yyy']}) locations.each do |location| # <- Line 6 if location.use_workflow PartialSync::Workflow.perform_async(location.id) else queue = location.customer.service_object.underscore.to_sym Sync::PartialSyncJob.set(queue: queue).perform_later(location.id) end end end end ``` I am not sure where to start looking, I would really appreciate any insight to try to find out if this is indeed a bug in Ruby or if this is a jemalloc issue. Thanks in advance. -- https://bugs.ruby-lang.org/