1986815 - Crash in [@ MaximizedWindowedModeFullscreenEnabled]

Status: RESOLVED WORKSFORME

(Core :: Graphics, defect, P3)

Description

[BugBot [:suhaib / :marco]]

Crash report: https://crash-stats.mozilla.org/report/index/aa4f8646-7e19-4fa9-a1ba-ddbfb0250831

Reason: EXCEPTION_ACCESS_VIOLATION_READ

Top 10 frames of crashing thread:

0  dxgi.dll  MaximizedWindowedModeFullscreenEnabled  
1  dxgi.dll  CDXGISwapChain::IsMaximizedWindowedUpgradesEnabled  
2  dxgi.dll  CDXGISwapChain::UnbindFromDwm  
3  dxgi.dll  CDXGISwapChain::FinalRelease  
4  dxgi.dll  CMTUseCountedObject<CDXGISwapChainApplicationClass>::CFinalReleaseSentinel::~CFinalReleaseSentinel  
5  msvcrt.dll  CallSettingFrame  
6  msvcrt.dll  _FrameUnwindToState  
7  msvcrt.dll  __FrameUnwindToEmptyState  
8  msvcrt.dll  _InternalCxxFrameHandler  
9  msvcrt.dll  _CxxFrameHandler3  

By querying Nightly crashes reported within the last 2 months, here are some insights about the signature:

• First crash report: 2025-07-02
• Process type: GPU
• Is startup crash: No
• Has user comments: No
• Is null crash: Yes - all crashes happened on null or near null memory address

Comment 1

[BugBot [:suhaib / :marco]]

The Bugbug bot thinks this bug should belong to the 'Core::Graphics' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 2

[Andrew McCreight [:mccr8]]

Looking waaaay up the stack, the first Firefox frame is mozilla::wr::RenderCompositorANGLE::CreateSwapChainForHWND()

Comment 3

[Brad Werth [:bradwerth]]

Low volume crash. Ashley, would you please take a look at this, and elevate priority/severity if warranted?

Comment 4

[Ashley Hale [:ahale]]

Looked at the reports, I'm pretty sure this is a single user having a bad time on Nightly while watching YouTube videos on an NVIDIA GPU, it's not clear to me why creating the video swapchain is crashing for them, as far as I can tell it is happening when they go to fullscreen a video.

Comment 5

[BugBot [:suhaib / :marco]]

Closing because no crashes reported for 12 weeks.