Closed Bug 1217027 Opened 9 years ago Closed 3 years ago

Nightly freezes in opening mpeg2 dll due to canPlayType probe when profiler sampling 64-bit frames

Categories

(Core :: Gecko Profiler, defect)

Product:
Core
Component:
Gecko Profiler
Platform:
x86_64
Windows 10
Type:
defect
Priority:
Not set
Severity:
normal

Tracking

()

Status:
RESOLVED WORKSFORME

People

(Reporter: chutten, Unassigned)

References

(Blocks 1 open bug)

Details

Not 100% reproducible, but nearly. Ensure you're using 64-bit Nightly on Windows, with the profiler installed and ready to go. Start Nightly and hit Analyze as soon as the profiler action shows up. At about the 90s mark the canPlayType probe ought to fire in browser.js (from bug 1180109). This can cause a freeze in our patched dll loader (specifically the stub_LdrLoadDll call in WindowsDllBlocklist.cpp::patched_LdrLoadDll) Doesn't seem to happen with 32-bit Nightly.
Blocks: 1329181

I wasn't able to reproduce this old bug. We've fixed some issues around DLL load labels recently (e.g., bug 1754357), maybe that was that.

Status: NEW → RESOLVED
Closed: 3 years ago
Resolution: --- → WORKSFORME
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