1887027 - about:crashes not accessible in ASAN builds

Status: NEW

(Toolkit :: Crash Reporting, defect)

Description

[Kelsey Gilbert [:jgilbert]]

It says page not found for "about:crashes" in ASAN builds.
This gets in the way of requesting about:crashes from contributors/reporters.

Comment 1

[Gabriele Svelto [:gsvelto]]

Crash reporting is disabled in ASAN builds ([1], [2]), that's why the page doesn't show up.

Comment 2

[Jeff Muizelaar [:jrmuizel]]

What happens to the crashes that users using ASAN builds get?

Comment 3

[Gabriele Svelto [:gsvelto]]

ASAN has its own reports and reporting code (see here). I don't know where those reports end up though.

Comment 4

[Gian-Carlo Pascutto [:gcp]]

Decoder is probably best aware of how this works.

Comment 5

[Christian Holler (:decoder)]

These crashes end up in their own crash reporting infrastructure and only certain crashes are filed from there (mainly use-after-free and other "special" ASan crashes that have additional debug information which allows them to be fixed often with little investigation).

However, a copy of each crash report is also stored locally in the profile directory. There should be a subdirectory "asan" which contains text files that can simply be opened. Files that have already been submitted have the ".submitted" extension but are still just text files.

Comment 6

[Gian-Carlo Pascutto [:gcp]]

Christian, I'm going to lower this to S4 but perhaps that can be added to the documentation? Or we can make an alternate about:crashes page?

Comment 7

[Christian Holler (:decoder)]

I'm open to either of these options, but we are planning to sunset the whole ASan Nightly project soon anyways in favor of PHC, so it is unclear if we really need to do anything further here.