Crash in [@ memcpy | ReadPixels]
Categories
(Core :: Graphics: WebRender, defect)
Tracking
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| Tracking | Status | |
|---|---|---|
| firefox-esr78 | --- | unaffected |
| firefox84 | --- | unaffected |
| firefox85 | --- | unaffected |
| firefox86 | --- | fixed |
People
(Reporter: gsvelto, Assigned: lsalzman)
References
(Blocks 1 open bug)
Details
(Keywords: crash)
Crash Data
Attachments
(2 files)
Crash report: https://crash-stats.mozilla.org/report/index/fdf08841-0e78-4bc9-b3ee-b360a0210117
Reason: EXCEPTION_ACCESS_VIOLATION_READ
Top 10 frames of crashing thread:
0 vcruntime140.dll memcpy f:\dd\vctools\crt\vcruntime\src\string\i386\memcpy.asm:319
1 xul.dll ReadPixels gfx/wr/swgl/src/gl.cc:2666
2 xul.dll swgl::swgl_fns::{{impl}}::read_pixels_into_buffer gfx/wr/swgl/src/swgl_fns.rs:594
3 xul.dll webrender::device::gl::Device::read_pixels_into gfx/wr/webrender/src/device/gl.rs:3124
4 xul.dll webrender::renderer::Renderer::read_pixels_into gfx/wr/webrender/src/renderer/mod.rs:5226
5 xul.dll webrender_bindings::bindings::wr_renderer_readback gfx/webrender_bindings/src/bindings.rs:768
6 xul.dll mozilla::wr::RenderThread::UpdateAndRender gfx/webrender_bindings/RenderThread.cpp:516
7 xul.dll mozilla::wr::WebRenderAPI::Readback::Readback::Run gfx/webrender_bindings/WebRenderAPI.cpp:515
8 xul.dll mozilla::wr::RenderThread::RunEvent gfx/webrender_bindings/RenderThread.cpp:410
9 xul.dll static mozilla::detail::RunnableMethodArguments<mozilla::wr::WrWindowId, mozilla::UniquePtr<mozilla::wr::RendererEvent, mozilla::DefaultDelete<mozilla::wr::RendererEvent> >&&>::applyImpl<mozilla::wr::RenderThread, void xpcom/threads/nsThreadUtils.h:1148
Only a handful of crashes here but they're coming from different installations and the stacks are consistent so this looks valid. The first buildid that's affected is 20210115125655.
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Updated•3 years ago
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Comment 1•3 years ago
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GraphicsCriticalErrors had the following error. It seemed to be related.
RenderCompositorSWGL failed mapping default framebuffer
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Comment 2•3 years ago
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When the crash happned, CanvasRenderingContext2D::DrawWindow() was called.
The call seemed to come from the following.
The following expects that the DrawWindow() is not called with WebRender. But the check does not work with software WebRender.
The following returns different strings between hardware WebRender and software WebRender.
SanityTest.jsm does not expects that the DrawWindow() is called with software WebRender, though software WebRender seemed have a problem of readback.
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Assignee | |
Comment 3•3 years ago
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Updated•3 years ago
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Assignee | |
Comment 4•3 years ago
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Pushed by lsalzman@mozilla.com: https://hg.mozilla.org/integration/autoland/rev/31a10d770e4d try to avoid out-of-bounds ReadPixels. r=jrmuizel
Pushed by lsalzman@mozilla.com: https://hg.mozilla.org/integration/autoland/rev/f270b9071a8e clear out old SWGL framebuffer after frame ends. r=jrmuizel
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Comment 7•3 years ago
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| bugherder | ||
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Updated•3 years ago
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Comment 8•3 years ago
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| bugherder | ||
Description
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