winword hangs at startup

[vlucky]

hi,

Today I observed winword.exe hangs at the startup (after showing splash screen, Not responding) while opening file.

OS: windows 10 64-bit v1709 (Build 16299.309)
Office version: office 2016

I was able to take the hang dump. please find the link below.

https://drive.google.com/open?id=1Ng1omYZcRowatnPCNcVZhgCJviYZUFgz

Please let me know, if you need additional information.

[mxmauro]

There exists some issues with AppV packages because AppV engine is no reentrant in some scenarios.

[vlucky]

hi @mxmauro, thanks for the reply.
any work around?

[mxmauro]

Let us see. BTW: Did you use your compiled dlls? If yes please send me the pdb files.

[vlucky]

No, If I am not mistaken, I am using the pre-compiled dlls.

[vlucky]

hi @mxmauro , could you please update?

[vlucky]

hi @mxmauro,

Please find below link for dumps for winword hang while startup & saving the file. The zip file included pdb files of deviare dlls.

https://drive.google.com/open?id=13mzwPDeaJnYz_24m0ANSYxoSxuFPbO9X

[mxmauro]

Hi @vlucky

The problem is something known: AppV subsystem uses by some versions of Office products hooks several native APIs and the code is non-reentrant.

Deviare2 generates some routines to make the syscall directly (see https://github.com/nektra/Deviare2/blob/802333b44b5bafc27d64a7d5dcf6ce4387b0d5a1/Source/Common/DynamicAPIs.cpp) but they must be ported to Deviare In-Proc too.

[vlucky]

Hi @mxmauro,

recently powerpoint getting hanged when trying to "save as" edited file in network drive.

dump file can be found in the following location.
https://drive.google.com/open?id=1KffG7WOESI4q3rmo-LUipK-2_VgXh8oH

I am not sure this is just timing issue or same problem with AppV subsytem.

But anyway, could you please guide me to do it my self those modifications to fix the issues caused by AppV sub system (like porting function to deviare In-Proc).

Thanks.

[mxmauro]

Hi @vlucky can you upload the .pdb files of your build?

[vlucky]

below are the .pdb files
https://drive.google.com/open?id=1tZOjka49ysBGjjdWE36AworoyZN19Lqa

[mxmauro]

Hi @vlucky , I cannot see Deviare2 involved in the issues. The only threads were Deviare appears, are worker threads used for communication and the main Deviare thread.

[vlucky]

Hi @mxmauro, thanks for the reply.
It might be the case, but when tried to reproduce the issue without deviare, we couldn't replicate the issue.

1. may be the question is not related, but could you please let me know why the hang happened? or please point me in the right direction to pin point the issue.

2. could you please guide me to fix the original issue i.e. hang of applications while hooking? i.e. as previously suggested by you to port the system calls from deviare to Deviare-In-Proc?

Thanks.