Windows 4430 - Crash Browser Accessibility Manager

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Windows 4430 - Crash Browser Accessibility Manager

Postby leeroy » Fri Mar 26, 2021 9:38 pm

Recently migrated to CEF 4430 and seeing an issue that is causing a crash.

Process just dies, but we see this logged:
Code: Select all
[0326/192930.400:FATAL:browser_accessibility_manager.cc(458)] Check failed: int{tree_update.nodes.size()} <= ax_tree()->size() (131 vs. 130)


We are still investigating, but hoping someone may have seen this before and can shed some light on this. Thanks!

Edition Windows 10 Pro for Workstations
Version 20H2
Experience Windows Feature Experience Pack 120.2212.551.0
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Re: Windows 4430 - Crash Browser Accessibility Manager

Postby magreenblatt » Fri Mar 26, 2021 9:59 pm

Looks like https://bugs.chromium.org/p/chromium/is ... size&can=2

If you use a Release build of CEF does it still crash?
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Re: Windows 4430 - Crash Browser Accessibility Manager

Postby leeroy » Fri Mar 26, 2021 10:54 pm

Interesting... Our release build is totally fine. I'll look into that chromium bug too.
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Re: Windows 4430 - Crash Browser Accessibility Manager

Postby leeroy » Sat Mar 27, 2021 8:59 pm

Looking at the chromium bug, I don't know that I have a lot of options, as it only appears to be impacted by certain pages/urls. We don't technically need a debug version of CEF in our app, so I might look at just bundling this with the release version until that is resolved. Regardless I'll report back if that ends up being a doable workaround for now.

Also if we can find out exactly the scenario that is causing this I'll try and provide some further info on that chromium bug.
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Re: Windows 4430 - Crash Browser Accessibility Manager

Postby leeroy » Mon Mar 29, 2021 2:30 pm

This is also not consistent for a given URL, but seems to be machine dependent. :shock:
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Re: Windows 4430 - Crash Browser Accessibility Manager

Postby leeroy » Tue Mar 30, 2021 11:48 am

As a work-around we are bundling the release libcef.dll and v8_context_snapshot.bin. This is probably a terrible idea, but it gets us over the finish line with this issue for now.
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Re: Windows 4430 - Crash Browser Accessibility Manager

Postby magreenblatt » Tue Mar 30, 2021 11:57 am

leeroy wrote:As a work-around we are bundling the release libcef.dll and v8_context_snapshot.bin. This is probably a terrible idea, but it gets us over the finish line with this issue for now.

It's not a terrible idea. You should always use Release builds with production applications.
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Re: Windows 4430 - Crash Browser Accessibility Manager

Postby leeroy » Tue Mar 30, 2021 12:14 pm

Sorry, I should have been more clear, this is our Debug build for our dev/sqa folks that we swapped out these debug binaries. Production is release only and doesn't experience this thankfully! :D
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