1799278 - Crash in [@ mozilla::net::LoadInfo::Release]

Status: RESOLVED DUPLICATE of bug 1799435

(Core :: CSS Parsing and Computation, defect)

Description

[Gabriele Svelto [:gsvelto]]

Crash report: https://crash-stats.mozilla.org/report/index/ddc49868-4bef-4af8-8180-5ff720221104

MOZ_CRASH Reason: MOZ_RELEASE_ASSERT(NS_IsMainThread()) (Wrong thread!)

Top 10 frames of crashing thread:

0  xul.dll  mozilla::net::LoadInfo::Release  netwerk/base/LoadInfo.cpp:848
1  xul.dll  nsCOMPtr_base::~nsCOMPtr_base  xpcom/base/nsCOMPtr.h:328
1  xul.dll  NS_GetFinalChannelURI  netwerk/base/nsNetUtil.cpp:2301
2  xul.dll  nsContentUtils::ShouldResistFingerprinting  dom/base/nsContentUtils.cpp:2242
3  xul.dll  mozilla::dom::Document::PreferredColorScheme const  dom/base/Document.cpp:17847
4  xul.dll  Gecko_ComputeSystemColor  layout/style/GeckoBindings.cpp:680
5  xul.dll  style::gecko::media_queries::Device::system_nscolor  servo/components/style/gecko/media_queries.rs:454
5  xul.dll  style::values::specified::color::SystemColor::compute  servo/components/style/values/specified/color.rs:356
5  xul.dll  enum2$<style::values::specified::color::Color>::to_computed_color  servo/components/style/values/specified/color.rs:664
6  xul.dll  style::values::specified::color::impl$8::to_computed_value  servo/components/style/values/specified/color.rs:675

It seems like we're manipulating a URI on the wrong thread. I'm not sure if this is a style computation problem or a fingerprinting-resistance one.

Comment 1

[Kestrel]

It only happens for me with privacy.resistFingerprinting = true.

Regression window:
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=7a26d2290b51df8a28c18073dfcb077e0577e5d0&tochange=f90b376b2c985c66f19e77d6d703afd8d5e140c3

Regressed by Bug 1544127.

Comment 2

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

:jesup, since you are the author of the regressor, bug 1544127, could you take a look? Also, could you set the severity field?

For more information, please visit auto_nag documentation.

Comment 4

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

The bug is linked to a topcrash signature, which matches the following criterion:

• Top 10 desktop browser crashes on nightly

:emilio, could you consider increasing the severity of this top-crash bug?

For more information, please visit auto_nag documentation.

Comment 5

[Emilio Cobos Álvarez (:emilio)]

Bug 1799435 should fix this.