Rocket.chat: Server becomes unresponsive after posting multiline formatted message

[bbrauns]

Description:

Rocket.Chat Server becomes unresponsive after posting the following multiline formatted message:

Aug  6 00:07:31 owncloud-3 ownCloud[19309]: [xyz][134.76.23.45][--][no app in context][GET][/index.php/s/xyz/download?path=%2F&files[]=Video2_Albert.rar&files[]=Video3_Albert.rar&downloadStartSecret=xyz] Exception: {"Exception":"OCP\\Lock\\LockedException","Message":"\"Videos\/Valerie\/Verschluesselt\" is locked","Code":0,"Trace":"#0 \/var\/www\/owncloud\/lib\/private\/Files\/View.php(2079): OC\\Files\\View->lockPath('\/Videos\/Valerie...', 1)\n#1 \/var\/www\/owncloud\/lib\/private\/legacy\/files.php(333): OC\\Files\\View->lockFile('\/Videos\/Valerie...', 1)\n#2 \/var\/www\/owncloud\/lib\/private\/legacy\/files.php(152): OC_Files::lockFiles(Object(OC\\Files\\View), '\/Videos\/Valerie...', Array)\n#3 \/var\/www\/owncloud\/apps\/files_sharing\/lib\/Controllers\/ShareController.php(509): OC_Files::get('\/Videos\/Valerie...', Array, Array)\n#4 [internal function]: OCA\\Files_Sharing\\Controllers\\ShareController->downloadShare('xyz', Array, '\/', 'xyz')\n#5 \/var\/www\/owncloud\/lib\/private\/AppFramework\/Http\/Dispatcher.php(159): call_user_func_array(Array, Array)\n#6 \/var\/www\/owncloud\/lib\/private\/AppFramework\/Http\/Dispatcher.php(89): OC\\AppFramework\\Http\\Dispatcher->executeController(Object(OCA\\Files_Sharing\\Controllers\\ShareController), 'downloadShare')\n#7 \/var\/www\/owncloud\/lib\/private\/AppFramework\/App.php(103): OC\\AppFramework\\Http\\Dispatcher->dispatch(Object(OCA\\Files_Sharing\\Controllers\\ShareController), 'downloadShare')\n#8 \/var\/www\/owncloud\/lib\/public\/AppFramework\/App.php(135): OC\\AppFramework\\App::main('ShareController', 'downloadShare', Object(OC\\AppFramework\\DependencyInjection\\DIContainer))\n#9 \/var\/www\/owncloud\/core\/routes.php(106): OCP\\AppFramework\\App->dispatch('ShareController', 'downloadShare')\n#10 [internal function]: OC\\Route\\Router->{closure}(Array)\n#11 \/var\/www\/owncloud\/lib\/private\/Route\/Router.php(342): call_user_func(Object(Closure), Array)\n#12 \/var\/www\/owncloud\/lib\/base.php(912): OC\\Route\\Router->match('\/s\/xyz...')\n#13 \/var\/www\/owncloud\/index.php(55): OC::handleRequest()\n#14 {main}","File":"\/var\/www\/owncloud\/lib\/private\/Files\/View.php","Line":1977}

Posting this log-message as normal text works fine.

Steps to reproduce:

1. Post the log line above with the three backticks: ``` as multi line prefix

Expected behavior:

post the message

Actual behavior:

• Message is kept in input field
• client app hangs
• server hangs

Server Setup Information:

• Version of Rocket.Chat Server: 0.68.3
• Operating System: Ubuntu 14.04.5 LTS
• Deployment Method: docker
• Number of Running Instances: 1
• DB Replicaset Oplog: Enabled
• NodeJS Version: v8.11.3
• MongoDB Version: 3.4

Additional context

Relevant logs:

No relevant log lines can be found

[jthomae1]

Unfortunately there are no log entries regarding this error. We also get the same behavior with a previous Version (0.65.1) of Rocket.Chat.

[localguru]

Same here with RC 0.61

[bbrauns]

Emergency steps to delete a message in mongodb

Find direct chat of two specific people

• db.rocketchat_room.find({usernames: ['user-x','user-y']}).pretty()
• note the rid

Find channel by rid

• db.rocketchat_message.find({'rid': '4EzT9u48mDndDwP3cXbuy83'}).sort({ts: 1}).pretty()
• repeat typing 'it' to see all responses

Delete specific message

db.rocketchat_message.deleteOne({_id: 'mHN4QaGz6RuJ'})

[beranPro]

Error still exists in 0.71.0 !!!

[xvilo]

Wtf, this bug. Why is this happing, and why hasn't this been fixed?

[reetp]

@xvilo because you haven't fixed it?

This is open source. It will get fixed when it gets fixed.

The developers have lots of priorities, and paying customers will come first.

You have to either fix it yourself, pay for support, or be patient.

Thank you.

[ggazzo]

thanks @reetp to understand our situation... but sometimes we made some fix too (:
actually, we were trying to send each message that got the username changed, its very very very expensive and as you can see the server/client hangs. after that change https://github.com/RocketChat/Rocket.Chat/pull/12800 I think we "fixed"(there are better ways, but ... maybe in the future :) )
@xvilo you are welcome to try #12800 and send us feedbacks

[]s

[reetp]

Any information on this or the PR #12800 ?

[xvilo]

I don't know. We've stopped using Rocket Chat all together.

[igorr-stc]

Still have same problem with 0.74.3

[reetp]

Any news on this?

[jthomae1]

The problem still occurs with version 1.1.1

[vladborovtsov]

The issue still happening.
Server version 2.3.1.

Indeed, there is nothing in the logs that could give a clue.

[ggazzo]

its a highlight problem actually 😢

https://github.com/RocketChat/Rocket.Chat/blob/develop/app/markdown/lib/parser/original/code.js#L50