1648356 - Crash in [@ mozilla::fontlist::FontList::ShareBlocksToProcess]

Status: RESOLVED FIXED

(Core :: Graphics: Text, defect)

Description

[Gabriele Svelto [:gsvelto]]

This bug is for crash report bp-ef2bb61a-d5a4-42c2-ae2d-8ad150200623.

Top 10 frames of crashing thread:

0 xul.dll mozilla::fontlist::FontList::ShareBlocksToProcess gfx/thebes/SharedFontList.cpp:618
1 xul.dll mozilla::dom::ContentParent::InitInternal dom/ipc/ContentParent.cpp:2635
2 xul.dll mozilla::dom::ContentParent::LaunchSubprocessResolve dom/ipc/ContentParent.cpp:2364
3 xul.dll mozilla::dom::ContentParent::WaitForLaunchSync dom/ipc/ContentParent.cpp:1121
4 xul.dll static mozilla::dom::ContentParent::GetNewOrUsedBrowserProcess dom/ipc/ContentParent.cpp:1061
5 xul.dll static mozilla::dom::ContentParent::CreateBrowser dom/ipc/ContentParent.cpp:1345
6 xul.dll nsFrameLoader::TryRemoteBrowserInternal dom/base/nsFrameLoader.cpp:2627
7 xul.dll nsFrameLoader::TryRemoteBrowser dom/base/nsFrameLoader.cpp:2690
8 xul.dll nsFrameLoader::ShowRemoteFrame dom/base/nsFrameLoader.cpp:1094
9 xul.dll nsFrameLoader::Show dom/base/nsFrameLoader.cpp:965

The oldest nightly buildid w/ this crash is 20200622214758. Oddly enough we've got an older crash from beta w/ buildid 20200616235426. The raw crash reason is MOZ_CRASH(failed to share block).

Comment 1

[Andrew Osmond [:aosmond] (he/him)]

Looks like the the crash reason got added recently in bug 1640119.

Comment 2

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

Set release status flags based on info from the regressing bug 1640119

Comment 3

[Jonathan Kew [:jfkthame]]

This is behind a (default-disabled) pref, so release builds are unaffected.

Comment 4

[Jonathan Kew [:jfkthame]]

Attachment: Bug 1648356 - Don't crash the parent process we fail to share font-list blocks while launching a child; the content process will safely handle this by requesting blocks as needed. r=jwatt

Comment 5

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/57182c153f37
Don't crash the parent process we fail to share font-list blocks while launching a child; the content process will safely handle this by requesting blocks as needed. r=jwatt

Comment 6

[Noemi Erli[:noemi_erli]]

https://hg.mozilla.org/mozilla-central/rev/57182c153f37