Bug 202594 – REGRESSION(r250540): GitLab CI status is broken

• Component: JavaScriptCore
• Status: RESOLVED DUPLICATE

[Michael Catanzaro]

Since 2.27.1, GitLab CI status pages (e.g. https://gitlab.gnome.org/GNOME/gnome-boxes/-/jobs/455823) are broken. The terminal window does not appear at all.

[Michael Catanzaro]

This broke in r250540: "Inline caching is wrong for custom accessors and custom values"

[Radar WebKit Bug Importer]

<rdar://problem/56022868>

[Carlos Garcia Campos]

I can't reproduce it in mac. With GTK port I get an error in the js console:

[Error] TypeError: o is not a function. (In 'o(!1)', 'o' is an instance of Object)
	(anonymous function) (main.f8ac0dda.chunk.js:130:201836)
	c (runtime.15f5b13a.bundle.js:1:523)
	(anonymous function) (main.f8ac0dda.chunk.js:130:110589)
	c (runtime.15f5b13a.bundle.js:1:523)
	(anonymous function) (main.f8ac0dda.chunk.js:136:126956)
	c (runtime.15f5b13a.bundle.js:1:523)
	(anonymous function) (main.f8ac0dda.chunk.js:130:201645)
	c (runtime.15f5b13a.bundle.js:1:523)
	(anonymous function) (main.f8ac0dda.chunk.js:93:7337)
	c (runtime.15f5b13a.bundle.js:1:523)
	(anonymous function) (main.f8ac0dda.chunk.js:136:126850)
	c (runtime.15f5b13a.bundle.js:1:523)
	(anonymous function) (main.f8ac0dda.chunk.js:136:126778)
	c (runtime.15f5b13a.bundle.js:1:523)
	(anonymous function) (main.f8ac0dda.chunk.js:156:115284)
	c (runtime.15f5b13a.bundle.js:1:523)
	(anonymous function) (main.f8ac0dda.chunk.js:58:15103)
	(anonymous function) (main.f8ac0dda.chunk.js:58:19612)
	c (runtime.15f5b13a.bundle.js:1:523)
	(anonymous function) (pages.projects.merge_requests.show.bc041ae3.chunk.js:1:167621)
	c (runtime.15f5b13a.bundle.js:1:523)
	t (runtime.15f5b13a.bundle.js:1:389)
	r (runtime.15f5b13a.bundle.js:1:252)
	Global Code (pages.projects.merge_requests.show.bc041ae3.chunk.js:1)

[Carlos Garcia Campos]

(In reply to Carlos Garcia Campos from comment #3)
> I can't reproduce it in mac. With GTK port I get an error in the js console:
> 
> [Error] TypeError: o is not a function. (In 'o(!1)', 'o' is an instance of
> Object)
> 	(anonymous function) (main.f8ac0dda.chunk.js:130:201836)
> 	c (runtime.15f5b13a.bundle.js:1:523)
> 	(anonymous function) (main.f8ac0dda.chunk.js:130:110589)
> 	c (runtime.15f5b13a.bundle.js:1:523)
> 	(anonymous function) (main.f8ac0dda.chunk.js:136:126956)
> 	c (runtime.15f5b13a.bundle.js:1:523)
> 	(anonymous function) (main.f8ac0dda.chunk.js:130:201645)
> 	c (runtime.15f5b13a.bundle.js:1:523)
> 	(anonymous function) (main.f8ac0dda.chunk.js:93:7337)
> 	c (runtime.15f5b13a.bundle.js:1:523)
> 	(anonymous function) (main.f8ac0dda.chunk.js:136:126850)
> 	c (runtime.15f5b13a.bundle.js:1:523)
> 	(anonymous function) (main.f8ac0dda.chunk.js:136:126778)
> 	c (runtime.15f5b13a.bundle.js:1:523)
> 	(anonymous function) (main.f8ac0dda.chunk.js:156:115284)
> 	c (runtime.15f5b13a.bundle.js:1:523)
> 	(anonymous function) (main.f8ac0dda.chunk.js:58:15103)
> 	(anonymous function) (main.f8ac0dda.chunk.js:58:19612)
> 	c (runtime.15f5b13a.bundle.js:1:523)
> 	(anonymous function)
> (pages.projects.merge_requests.show.bc041ae3.chunk.js:1:167621)
> 	c (runtime.15f5b13a.bundle.js:1:523)
> 	t (runtime.15f5b13a.bundle.js:1:389)
> 	r (runtime.15f5b13a.bundle.js:1:252)
> 	Global Code (pages.projects.merge_requests.show.bc041ae3.chunk.js:1)

This is not CI status page is just a normal merge request page, the comments are never loaded.

[Carlos Garcia Campos]

I've noticed that reloading the page sometimes fixes the issue, so it seems to be a race condition. Is there anything else I can do to help to fix this (with my limited jsc knowledge)?

[Michael Catanzaro]

Rollout...?

[Saam Barati]

I have a fix in:
https://bugs.webkit.org/show_bug.cgi?id=202827

That I will land today. Please confirm it fixes your bug

[Michael Catanzaro]

Thanks Saam!

(In reply to Carlos Garcia Campos from comment #5)
> I've noticed that reloading the page sometimes fixes the issue, so it seems
> to be a race condition. Is there anything else I can do to help to fix this
> (with my limited jsc knowledge)?

If you could test Saam's fix, please, then I won't need to build WebKit on my travel laptop? :)

[Saam Barati]

(In reply to Carlos Garcia Campos from comment #5)
> I've noticed that reloading the page sometimes fixes the issue, so it seems
> to be a race condition. Is there anything else I can do to help to fix this
> (with my limited jsc knowledge)?

I don't think it's a typical race. You're probably just seeing effects of concurrent JIT. If you turn of concurrent JIT, it should reproduce every time in my experience with other web pages that broke.

[Saam Barati]

(In reply to Saam Barati from comment #9)
> (In reply to Carlos Garcia Campos from comment #5)
> > I've noticed that reloading the page sometimes fixes the issue, so it seems
> > to be a race condition. Is there anything else I can do to help to fix this
> > (with my limited jsc knowledge)?
> 
> I don't think it's a typical race. You're probably just seeing effects of
> concurrent JIT. If you turn of concurrent JIT, it should reproduce every
> time in my experience with other web pages that broke.

And if my patch doesn't fix the issue, it'd be super good to know :-)

[Carlos Garcia Campos]

(In reply to Saam Barati from comment #10)
> (In reply to Saam Barati from comment #9)
> > (In reply to Carlos Garcia Campos from comment #5)
> > > I've noticed that reloading the page sometimes fixes the issue, so it seems
> > > to be a race condition. Is there anything else I can do to help to fix this
> > > (with my limited jsc knowledge)?
> > 
> > I don't think it's a typical race. You're probably just seeing effects of
> > concurrent JIT. If you turn of concurrent JIT, it should reproduce every
> > time in my experience with other web pages that broke.
> 
> And if my patch doesn't fix the issue, it'd be super good to know :-)

It fixed it, thanks!

[Carlos Garcia Campos]

*** This bug has been marked as a duplicate of bug 202827 ***