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WPT Driver crashing
08-18-2016, 07:00 AM
Post: #1
WPT Driver crashing
I recently setup some private instances in AWS on Win server 2012R2. After a period of time, all agents will eventually drop off. After RDPing into the instance, I will see WPTDriver starting up making me think it has crashed at some point. These are m4.large instances.

Looking through logs, I see numerous "app crashes" for Flash on Firefox and some resource exhaustion warnings.

Is it possible the flash and/pr resource exhaustion issue are killing the WPT driver? Any ideas what might be wrong?

Flash Crash

[...]
<Data>FlashPlayerPlugin_22_0_0_209.exe</Data>
<Data>22.0.0.209</Data>
<Data>577317cd</Data>
<Data>FlashPlayerPlugin_22_0_0_209.exe</Data>
<Data>22.0.0.209</Data>
<Data>577317cd</Data>
<Data>c0000005</Data>
<Data>0002e479</Data>
[...]
<Data>C:\Users\Administrator\AppData\Local\Microsoft\Windows\WER\ReportArchive\AppC​rash_FlashPlayerPlugi_237f7f8f1affb4f382144514582341571a4b7ad3_28172f14_2432122b​
[...]

resource exhaustion warnings. Example:

- <MemoryExhaustionInfo xmlns="http://www.microsoft.com/Windows/Resource/Exhaustion/Detector/Events">
- <SystemInfo>
<SystemCommitLimit>12616056832</SystemCommitLimit>
<SystemCommitCharge>12349669376</SystemCommitCharge>
<ProcessCommitCharge>10131963904</ProcessCommitCharge>
<PagedPoolUsage>118796288</PagedPoolUsage>
<PhysicalMemorySize>4026122240</PhysicalMemorySize>
<PhysicalMemoryUsage>2158231552</PhysicalMemoryUsage>
<NonPagedPoolUsage>49922048</NonPagedPoolUsage>
<Processes>454</Processes>
</SystemInfo>
- <ProcessInfo>
- <Process_1>
<Name>firefox.exe</Name>
<ID>9056</ID>
<CreationTime>2016-08-17T19:33:30.596740300Z</CreationTime>
<CommitCharge>212295680</CommitCharge>
<HandleCount>574</HandleCount>
<Version>48.0.0.6051</Version>
<TypeInfo>201</TypeInfo>
</Process_1>
- <Process_2>
<Name>Ec2Config.exe</Name>
<ID>1376</ID>
<CreationTime>2016-08-17T14:35:15.115873000Z</CreationTime>
<CommitCharge>34914304</CommitCharge>
<HandleCount>505</HandleCount>
<Version>3.17.1032.0</Version>
<TypeInfo>66</TypeInfo>
</Process_2>
- <Process_3>
<Name>explorer.exe</Name>
<ID>1716</ID>
<CreationTime>2016-08-17T14:35:15.426841800Z</CreationTime>
<CommitCharge>30056448</CommitCharge>
<HandleCount>1278</HandleCount>
<Version>6.3.9600.18231</Version>
<TypeInfo>211</TypeInfo>
</Process_3>
- <Process_4>
<Name>FlashPlayerPlugin_22_0_0_209.exe</Name>
<ID>8776</ID>
<CreationTime>2016-08-17T18:24:03.940056300Z</CreationTime>
<CommitCharge>24576000</CommitCharge>
<HandleCount>169</HandleCount>
<Version>22.0.0.209</Version>
<TypeInfo>152</TypeInfo>
</Process_4>
- <Process_5>
<Name />
<ID>0</ID>
<CreationTime>1601-01-01T00:00:00.000000000Z</CreationTime>
<CommitCharge>0</CommitCharge>
<HandleCount>0</HandleCount>
<Version>0.0.0.0</Version>
<TypeInfo>0</TypeInfo>
</Process_5>
- <Process_6>
<Name />
<ID>0</ID>
<CreationTime>1601-01-01T00:00:00.000000000Z</CreationTime>
<CommitCharge>0</CommitCharge>
<HandleCount>0</HandleCount>
<Version>0.0.0.0</Version>
<TypeInfo>0</TypeInfo>
</Process_6>
</ProcessInfo>
- <PagedPoolInfo>
- <Tag_1>
<Name>CM31</Name>
<PoolUsed>61915136</PoolUsed>
</Tag_1>
- <Tag_2>
<Name>CM25</Name>
<PoolUsed>10981376</PoolUsed>
</Tag_2>
- <Tag_3>
<Name>MmSt</Name>
<PoolUsed>10914464</PoolUsed>
</Tag_3>
</PagedPoolInfo>
- <NonPagedPoolInfo>
- <Tag_1>
<Name>EtwR</Name>
<PoolUsed>5366048</PoolUsed>
</Tag_1>
- <Tag_2>
<Name>Vad</Name>
<PoolUsed>4958496</PoolUsed>
</Tag_2>
- <Tag_3>
<Name>Thre</Name>
<PoolUsed>3760000</PoolUsed>
</Tag_3>
</NonPagedPoolInfo>
- <ExhaustionEventInfo>
<Time>2016-08-17T19:34:18.363291900Z</Time>
</ExhaustionEventInfo>
</MemoryExhaustionInfo>
</UserData>
</Event>
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08-28-2016, 02:09 AM
Post: #2
RE: WPT Driver crashing
I ended up disabling flash as a workaround and now everything is stable.
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08-31-2016, 10:16 PM
Post: #3
RE: WPT Driver crashing
Bizarre. The flash crashes themselves shouldn't take out wptdriver (which runs separately from thr browser) but the resource exhaustion could have caused it. It wouldn't handle failing memory allocations very well.

It's also possible that wptdriver got stuck trying to do software installs if the flash installer was having issues and if you had the software=.... line in wptdriver.ini (which installs and upgrades flash automatically).
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