1645969 - Tabs always crash on Firefox launched by mozregression

Status: RESOLVED WORKSFORME

(Testing :: mozregression, defect)

Description

[Augustin Trancart [:autra]]

Description

When mozregression launches firefox, all the tabs are in crashed state.

Steps

• install mozregression, either from pip or from git master
• execute mozregression. I've tested
  mozregression --launch 2018-01-01
  mozregression --launch 2019-01-01
  mozregression --launch 2020-02-03
• check the tabs, open new ones, try to refresh

expected

tabs load

actual

On every single tab:

:-( Gah. Your tab just crashed.

Additional info

• I'm on Kubuntu 20.04, on a X1 Carbon

• browser console has the following errors

[Exception... "Component returned failure code: 0x80520001 (NS_ERROR_FILE_UNRECOGNIZED_PATH) [nsIXPCComponents_Utils.readUTF8URI]"  nsresult: "0x80520001 (NS_ERROR_FILE_UNRECOGNIZED_PATH)"  location: "JS frame :: resource://gre/modules/L10nRegistry.jsm :: L10nRegistry.loadSync :: line 759"  data: no] L10nRegistry.jsm:759:19
[Exception... "Component returned failure code: 0x80004001 (NS_ERROR_NOT_IMPLEMENTED) [nsIAppStartup.secondsSinceLastOSRestart]"  nsresult: "0x80004001 (NS_ERROR_NOT_IMPLEMENTED)"  location: "JS frame :: resource:///modules/BrowserGlue.jsm :: _collectStartupConditionsTelemetry :: line 1484"  data: no] BrowserGlue.jsm:1484:9

• On linux, pip install -r requirements/all.txt does not currently work, so I had to tweak it (dependency problem between flake8 and pycodestyle, and mozinfo and distro).

Please let me know if you need more info.

Comment 1

[William Lachance (:wlach)]

Hi! That's pretty odd. Does a plain Firefox nightly build (tar.gz) downloaded from Mozilla work?

(In reply to Augustin Trancart [:autra] from comment #0)

• On linux, pip install -r requirements/all.txt does not currently work, so I had to tweak it (dependency problem between flake8 and pycodestyle, and mozinfo and distro).

I'm pretty sure these errors are spurious, you can safely ignore them. Actually, the mozinfo<->distro thing is definitely just a bug in mozinfo, I'll file a bug about that.

Comment 2

[William Lachance (:wlach)]

(In reply to William Lachance (:wlach) (use needinfo!) from comment #1)

I'm pretty sure these errors are spurious, you can safely ignore them. Actually, the mozinfo<->distro thing is definitely just a bug in mozinfo, I'll file a bug about that.

Bug 1646038

Comment 3

[Augustin Trancart [:autra]]

Hi! That's pretty odd. Does a plain Firefox nightly build (tar.gz) downloaded from Mozilla work?

Yes (tested with fresh profile).

Comment 4

[Ian Moody [:Kwan] (UTC+1)]

Attachment: kubuntu_mozregression.png

Unable to reproduce in a new Kubuntu 20.04 64bit VM.

Comment 5

[Augustin Trancart [:autra]]

That does not suprise me, I can only reproduce on one of my 2 machines. So it's only with some graphic cards at least.

Comment 6

[Augustin Trancart [:autra]]

And btw, it only bugs in some websites, and BBC is not one of them. You should try with twitter Ian.

Comment 7

[Augustin Trancart [:autra]]

Oh I'm sorry I mixed 2 bugs. Please ignore the last 2 comments

Comment 8

[BugBot [:suhaib / :marco/ :calixte]]

The severity field is not set for this bug.
:wlach, could you have a look please?

For more information, please visit auto_nag documentation.

Comment 9

[William Lachance (:wlach)]

Per comment 4, this seems to work for others. :autra, please feel free to reopen if you can provide information on how to reproduce.

Comment 10

[tustamido]

I'm also experiencing this issue. Found this bug because I can't use mozregression to run old Fx versions, every tab crashes. Tried the three builds from first comment and all of them are unusable for me.

I just moved from Windows to Linux, maybe my system is missing some old dependencies required by old Fx versions?

I'm using Kernel 5.15.25-1-Manjaro x64, KDE 5.24.2, X11.

Using mozregression, I can say builds from 2020-08-31 or older are unusable for me (all tabs crash instantly), while builds since 2020-09-01 work fine.

Comment 11

[tustamido]

It seems to be bug 1660901. The suggestion made in https://bugzilla.mozilla.org/show_bug.cgi?id=1660901#c22 fixed it for me:

security.sandbox.content.level = 0