1382657 - A coding exception was thrown in a Promise resolution callback

Status: RESOLVED DUPLICATE of bug 1390455

(DevTools :: Inspector, defect)

Description

[eric]

Attachment: about_support.txt

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:54.0) Gecko/20100101 Firefox/54.0
Build ID: 20170612122310

Steps to reproduce:

Ctrl+shift+C

Move mouse to console and navigate to inspector element.

Happened on two PC's with same OS (ubuntu 16.04) and Firefox.

Nom: Firefox
Version: 54.0
Identifiant de compilation: 20170612122310
Agent utilisateur: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:54.0) Gecko/20100101 Firefox/54.0
Système d’exploitation: Linux 4.4.0-83-generic
Fenêtres multi-processus: 0/1 (Désactivé par des modules complémentaires)
Clé Google: Présente
Clé du service de localisation de Mozilla: Manquante
Mode sans échec: false

see : about_support.txt



Actual results:

Firefox freeze with this message (launch with terminal) - no crash report : 

*************************
A coding exception was thrown in a Promise resolution callback.
See https://developer.mozilla.org/Mozilla/JavaScript_code_modules/Promise.jsm/Promise

Full message: TypeError: rx.exec(...) is null
Full stack: getTextAtLineColumn@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/styles.js:1681:14
getRuleText@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/styles.js:1568:7
getAuthoredCssText/<@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/styles.js:1235:20
process@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:922:23
walkerLoop@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:806:7
scheduleWalkerLoop/<@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:742:11

*************************
*************************
A coding exception was thrown and uncaught in a Task.

Full message: TypeError: rx.exec(...) is null
Full stack: getTextAtLineColumn@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/styles.js:1681:14
getRuleText@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/styles.js:1568:7
getAuthoredCssText/<@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/styles.js:1235:20
process@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:922:23
walkerLoop@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:806:7
scheduleWalkerLoop/<@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:742:11

*************************
console.error: 
  Message: TypeError: rx.exec(...) is null
  Stack:
    getTextAtLineColumn@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/styles.js:1681:14
getRuleText@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/styles.js:1568:7
getAuthoredCssText/<@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/styles.js:1235:20
process@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:922:23
walkerLoop@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:806:7
scheduleWalkerLoop/<@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:742:11

getTextAtLineColumn@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/styles.js:1681:14
getRuleText@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/styles.js:1568:7
getAuthoredCssText/<@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/styles.js:1235:20
process@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:922:23
walkerLoop@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:806:7
scheduleWalkerLoop/<@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:742:11




Expected results:

Navigate throught code inspector without error

Comment 1

[Tom Tromey :tromey]

Could you say what site you were trying to inspect?  That would be helpful.

Comment 2

[eric]

(In reply to Tom Tromey :tromey from comment #1)
> Could you say what site you were trying to inspect?  That would be helpful.

Should I send you the url in private.

It's a beta website version ?

Thanks,

Eric

Comment 3

[Tom Tromey :tromey]

(In reply to eric from comment #2)
> (In reply to Tom Tromey :tromey from comment #1)
> > Could you say what site you were trying to inspect?  That would be helpful.
> 
> Should I send you the url in private.
> It's a beta website version ?

That would be fine, if you don't mind me trying it out a few times... thanks.

Comment 4

[eric]

That's done
Thanks.

Comment 5

[Tom Tromey :tromey]

I haven't seen it yet... not sure what happened, but if you come on irc or slack you could DM it to me instead.
Or, try emailing again.

Comment 6

[eric]

Sorry,
Mail it again.
Thanks

Comment 7

[Tom Tromey :tromey]

I still haven't gotten any email.
Could you come on irc instead?

Comment 8

[eric]

Hello,

The url has just been sent throught IRC #bugzilla to :tromey

Thanks,

Eric

Comment 9

[eric]

Attachment: Screen copy of crashed firefox and dev tools

Crashed just after closed IRC

Comment 10

[Tom Tromey :tromey]

I'm not sure I understand what's wrong in that screenshot.

I tried the test site but couldn't reproduce the problem.
I used nightly from sometime last week.

Comment 11

[Tom Tromey :tromey]

(In reply to Tom Tromey :tromey from comment #10)
> I'm not sure I understand what's wrong in that screenshot.

Oh, I see one tab (not in the foreground) says it crashed... is that it?

Comment 12

[eric]

Hello,

In the screenshot, firefox and devtools are hanged  (it's happened a few minute after we closed IRC).

If start in a term console, this message is thrown when firefox and devtools come back to life (have to wait some time) :

*************************
A coding exception was thrown in a Promise resolution callback.
See https://developer.mozilla.org/Mozilla/JavaScript_code_modules/Promise.jsm/Promise

Full message: TypeError: rx.exec(...) is null
Full stack: getTextAtLineColumn@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/styles.js:1681:14
getRuleText@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/styles.js:1568:7
getAuthoredCssText/<@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/styles.js:1235:20
process@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:922:23
walkerLoop@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:806:7
scheduleWalkerLoop/<@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:742:11

*************************
*************************
A coding exception was thrown and uncaught in a Task.

Full message: TypeError: rx.exec(...) is null
Full stack: getTextAtLineColumn@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/styles.js:1681:14
getRuleText@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/styles.js:1568:7
getAuthoredCssText/<@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/styles.js:1235:20
process@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:922:23
walkerLoop@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:806:7
scheduleWalkerLoop/<@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:742:11

*************************
console.error: 
  Message: TypeError: rx.exec(...) is null
  Stack:
    getTextAtLineColumn@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/styles.js:1681:14
getRuleText@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/styles.js:1568:7
getAuthoredCssText/<@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/styles.js:1235:20
process@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:922:23
walkerLoop@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:806:7
scheduleWalkerLoop/<@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:742:11

getTextAtLineColumn@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/styles.js:1681:14
getRuleText@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/styles.js:1568:7
getAuthoredCssText/<@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/styles.js:1235:20
process@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:922:23
walkerLoop@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:806:7
scheduleWalkerLoop/<@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:742:11

Comment 13

[Tom Tromey :tromey]

I think this was probably bug 1390455.
Can you try a newer nightly and see if it works now?

Comment 14

[eldk]

Hello,

I will do it in the next hours,

Thanks,

Eric

Comment 15

[eldk]

Hello,

I've tested it on the page that was crashing.

57.0a1 (2017-09-19) (64 bits)

I'm not able to reproduce it.

No trace in console (terminal).

Thanks,

Eric

Comment 16

[Tom Tromey :tromey]

Thanks!