overleaf/server-ce/hotfix/5.5.2/pr_26637.patch

diff --git a/services/clsi/app/js/LocalCommandRunner.js b/services/clsi/app/js/LocalCommandRunner.js
index ce274733585..aa62825443c 100644
--- a/services/clsi/app/js/LocalCommandRunner.js
+++ b/services/clsi/app/js/LocalCommandRunner.js
@@ -54,6 +54,7 @@ module.exports = CommandRunner = {
       cwd: directory,
       env,
       stdio: ['pipe', 'pipe', 'ignore'],
+      detached: true,
     })
 
     let stdout = ''
diff --git a/services/clsi/test/acceptance/js/StopCompile.js b/services/clsi/test/acceptance/js/StopCompile.js
new file mode 100644
index 00000000000..103a70f37d7
--- /dev/null
+++ b/services/clsi/test/acceptance/js/StopCompile.js
@@ -0,0 +1,47 @@
+const Client = require('./helpers/Client')
+const ClsiApp = require('./helpers/ClsiApp')
+const { expect } = require('chai')
+
+describe('Stop compile', function () {
+  before(function (done) {
+    this.request = {
+      options: {
+        timeout: 100,
+      }, // seconds
+      resources: [
+        {
+          path: 'main.tex',
+          content: `\
+\\documentclass{article}
+\\begin{document}
+\\def\\x{Hello!\\par\\x}
+\\x
+\\end{document}\
+`,
+        },
+      ],
+    }
+    this.project_id = Client.randomId()
+    ClsiApp.ensureRunning(() => {
+      // start the compile in the background
+      Client.compile(this.project_id, this.request, (error, res, body) => {
+        this.compileResult = { error, res, body }
+      })
+      // wait for 1 second before stopping the compile
+      setTimeout(() => {
+        Client.stopCompile(this.project_id, (error, res, body) => {
+          this.stopResult = { error, res, body }
+          setTimeout(done, 1000) // allow time for the compile request to terminate
+        })
+      }, 1000)
+    })
+  })
+
+  it('should force a compile response with an error status', function () {
+    expect(this.stopResult.error).to.be.null
+    expect(this.stopResult.res.statusCode).to.equal(204)
+    expect(this.compileResult.res.statusCode).to.equal(200)
+    expect(this.compileResult.body.compile.status).to.equal('terminated')
+    expect(this.compileResult.body.compile.error).to.equal('terminated')
+  })
+})
diff --git a/services/clsi/test/acceptance/js/helpers/Client.js b/services/clsi/test/acceptance/js/helpers/Client.js
index a0bdce734f3..49bf7390c6f 100644
--- a/services/clsi/test/acceptance/js/helpers/Client.js
+++ b/services/clsi/test/acceptance/js/helpers/Client.js
@@ -42,6 +42,16 @@ module.exports = Client = {
     )
   },
 
+  stopCompile(projectId, callback) {
+    if (callback == null) {
+      callback = function () {}
+    }
+    return request.post(
+      { url: `${this.host}/project/${projectId}/compile/stop` },
+      callback
+    )
+  },
+
   clearCache(projectId, callback) {
     if (callback == null) {
       callback = function () {}