1387962 - WebRender Crash in mozalloc_abort | abort | std::io::stdio::_print | webrender::platform::unix::font::FontContext::new | WARN: Initializing a FreeType library build without subpixel AA enabled!

Status: RESOLVED FIXED

(Core :: Graphics: WebRender, defect, P3)

Description

[Calixte Denizet (:calixte)]

This bug was filed from the Socorro interface and is 
report bp-6a541ca9-0ddf-4e38-81f0-c920e0170806.
=============================================================

There are 83 crashes in nightly 57 with buildid 20170806100257 (3 in 56 with buildid 20170725100346.)

Comment 1

[Cameron McCormack (:heycam)]

I think this is the println!() that I left in, and just removed in https://github.com/servo/servo/pull/17987.

Comment 2

[Calixte Denizet (:calixte)]

By the way there are 3 crashes from the same installation in 56 with this signature:
 - https://crash-stats.mozilla.com/report/index/095c3582-a374-48ba-a03a-ec22a0170725

The crash is probably due to the println!():
https://hg.mozilla.org/mozilla-central/annotate/131e19a573e9/gfx/webrender/src/platform/unix/font.rs#l66

I think we shouldn't crash just because of a println!().

Comment 3

[Cameron McCormack (:heycam)]

Manish, do you know println!() should cause us to crash, and what we can do about this problem in a more general manner than just hunting down println!()s in our dependencies?

Comment 4

[Emilio Cobos Álvarez [:emilio]]

(In reply to Calixte Denizet (:calixte) from comment #2)
> By the way there are 3 crashes from the same installation in 56 with this
> signature:
>  -
> https://crash-stats.mozilla.com/report/index/095c3582-a374-48ba-a03a-
> ec22a0170725
> 
> The crash is probably due to the println!():
> https://hg.mozilla.org/mozilla-central/annotate/131e19a573e9/gfx/webrender/
> src/platform/unix/font.rs#l66
> 
> I think we shouldn't crash just because of a println!().

This is in webrender though, probably shouldn't be blocking stylo at all.

Comment 5

[Bobby Holley (:bholley)]

(In reply to Emilio Cobos Álvarez [:emilio] from comment #4)
> (In reply to Calixte Denizet (:calixte) from comment #2)
> > By the way there are 3 crashes from the same installation in 56 with this
> > signature:
> >  -
> > https://crash-stats.mozilla.com/report/index/095c3582-a374-48ba-a03a-
> > ec22a0170725
> > 
> > The crash is probably due to the println!():
> > https://hg.mozilla.org/mozilla-central/annotate/131e19a573e9/gfx/webrender/
> > src/platform/unix/font.rs#l66
> > 
> > I think we shouldn't crash just because of a println!().
> 
> This is in webrender though, probably shouldn't be blocking stylo at all.

Great.

Comment 6

[Chris Peterson [:cpeterson]]

std::io::stdio::_print is a generic crash signature. About two-thirds of these crash reports in Nightly 57 look like WebRender crash bp-095c3582-a374-48ba-a03a-ec22a0170725 but about one-third look like Stylo crash bp-bd956033-75cc-4458-9bcc-1f0e20170809. I will label this bug as the WebRender crash and file a new bug for Stylo.

Comment 7

[Kartikaya Gupta (email:[e-mail])]

Alexis fixed this recently.