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Created by Administrator@rootOwner

Gitlab Crashes when clicking merge requests (error 500)

Created by: spuder

When a user attempts to make a merge request, gitlab returns an error 500

Looking at the log, it shows the following error

Started POST "/main/builder/merge_requests" for 127.0.0.1 at 2014-08-27 11:25:23 -0600
Processing by Projects::MergeRequestsController#create as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"xxxxxxxxxxx", "merge_request"=>{"title"=>"Develop", "description"=>"testing merge requests", "assignee_id"=>"", "milestone_id"=>"", "source_project_id"=>"79", "target_project_id"=>"79", "target_branch"=>"master", "source_branch"=>"develop"}, "project_id"=>"main/builder"}
Completed 500 Internal Server Error in 760ms

RuntimeError (expected SCALAR, SEQUENCE-START, MAPPING-START, or ALIAS):
  app/models/merge_request_diff.rb:146:in `reload_diffs'
  app/models/merge_request_diff.rb:44:in `reload_content'
  app/services/merge_requests/create_service.rb:9:in `execute'
  app/controllers/projects/merge_requests_controller.rb:96:in `create'
  app/controllers/application_controller.rb:59:in `set_current_user_for_thread'

This is reproducable everytime, It only happens on 1 project.

I won't paste the output of the rake tests, however everything looks correct.

cd /home/git/gitlab/ && sudo -u git -H bundle exec rake gitlab:env:info RAILS_ENV=production
cd /home/git/gitlab/ && sudo -u git -H bundle exec rake gitlab:check RAILS_ENV=production

I've verified that the repositories directory is clean, the gitlab-satellites directory is clean.

Running gitlab 6.9. What else can I check?

root@gitlab:/home/git/gitlab# sudo -u git -H bundle exec rake gitlab:env:info RAILS_ENV=production

System information
System:     Ubuntu 12.04
Current User:   git
Using RVM:  no
Ruby Version:   1.9.3p0
Gem Version:    2.4.1
Bundler Version:1.5.3
Rake Version:   10.3.1
Sidekiq Version:2.17.0

GitLab information
Version:    6.9.2
Revision:   8759577
Directory:  /home/git/gitlab
DB Adapter: mysql2
URL:        https://gitlab.foobar.com
HTTP Clone URL: https://gitlab.foobar.com/some-project.git
SSH Clone URL:  [email protected]:some-project.git
Using LDAP: yes
Using Omniauth: no

GitLab Shell
Version:    1.9.4
Repositories:   /home/git/repositories/
Hooks:      /home/git/gitlab-shell/hooks/
Git:        /usr/bin/git