Open Bug 1710386 Opened 5 months ago Updated 5 months ago

Crash in [@ _chkstk | profiler_suspend_and_sample_thread]


(Core :: Gecko Profiler, defect, P3)

Windows 10




(Reporter: gsvelto, Unassigned)


(Keywords: crash)

Crash Data

Crash report:


Top 10 frames of crashing thread:

0 xul.dll _chkstk 
1 xul.dll profiler_suspend_and_sample_thread tools/profiler/core/platform.cpp:5910
2 xul.dll mozilla::ThreadStackHelper::GetStack toolkit/components/backgroundhangmonitor/ThreadStackHelper.cpp:145
3 xul.dll static mozilla::BackgroundHangManager::MonitorThread toolkit/components/backgroundhangmonitor/BackgroundHangMonitor.cpp:80
4 nss3.dll _PR_NativeRunThread nsprpub/pr/src/threads/combined/pruthr.c:399
5 nss3.dll pr_root nsprpub/pr/src/md/windows/w95thred.c:139
6 ucrtbase.dll thread_start<unsigned int , 1> 
7 kernel32.dll BaseThreadInitThunk 
8 ntdll.dll RtlUserThreadStart 
9 kernelbase.dll TerminateProcessOnMemoryExhaustion 

This is a low-volume stack overflow crash happening on Windows. It seems to be caused by an interaction between the background hang manager and the profiler though I'm unsure what's going on. The stack of the crashing thread isn't particularly large and we don't seem to be allocating a large object where the crash occurs but maybe I'm missing something.

It does seem strange... I would expect more stack overflows deeper in the profiler and stack-walker code, but profiler_suspend_and_sample_thread itself shouldn't take much stack space.

Florian, any ideas on the BHR side? (Please redirect NI as appropriate.)

Severity: -- → S3
Crash Signature: [@ _chkstk | profiler_suspend_and_sample_thread] → [@ _chkstk | profiler_suspend_and_sample_thread] [@ mozilla::TimeStamp::Now | profiler_suspend_and_sample_thread]
Flags: needinfo?(florian)
Priority: -- → P3

(In reply to Gerald Squelart [:gerald] (he/him) from comment #1)

Florian, any ideas on the BHR side? (Please redirect NI as appropriate.)

Unfortunately, no idea. Doug might have some.

Flags: needinfo?(florian) → needinfo?(dothayer)

Unfortunately, also no idea. Puzzling.

Flags: needinfo?(dothayer)
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