1.3.2a client freeze server crash

[burzek]

Hi Rudi,

Still on many pc , I am still experiencing vnc viewer freeze/disconnect on first connection to the uvnc server.
The winvnc crashes and spawns again , causing vnc viewer to disconnect .
Even the latest version 1.3.2a did not solve this problem.
Sometime it happens some time it does not.
Is it possible to create a special version to collect information and send you so that you can find what is happening?

Best Regards,
Burzek

[Rudi De Vos]

Special build with minidump
https://www.uvnc.eu/download/133/crashrpt_133.zip


If mail fail, you can export it as zip and manual send it.

[burzek]

Hi,

I sent you some reports. First ones are because of viewer settings was ZRLE with 8 colors. It kept crashing the server.
last 2 reports should be because of clipbard problem.

I will load it to more pc to report other crash types.

Thanks,
Burzek

[Rudi De Vos]

debug seems to indicate an error in the intsruction set sse3 used by the zlib compression library.
(Used by many encoders and the clipboard)

What cpu are you testing on ?

Checking the compiler options for this library.

[burzek]

Hi Rudi,

The uvnc 1.2.2.4 64 bit works without any problems.

The cpu is AMD Athlon II X2 240 processor.
Here is the cpu-z screenshot.

[Rudi De Vos]

Code: Select all

The uvnc 1.2.2.4 64 bit works without any problems.

That version had an older Zlib library.
It looks like the new zlib ( chromium version) could be the cause.

we gonna build the winvnc.exe with zlib 1.2.11, special test build.
But you need to test it, we just can't repeat the crash.
The info in the crash is limited, we just see the assembler call in zlib, but not sure is this is the real cause.

[burzek]

Hi Rudi,

I see, I can test it when you make the new test file.
I am willing to help.

Also vncviewer stays in memory after crashes or disconnects. Sometimes I see 3-4 vncviewer just sitting in memory.
Is it possible to find the cause also?

Thanks,
Burzek

[Rudi De Vos]

https://www.uvnc.eu/download/133/crashrpt_133_2.zip

New test, please pm the ultravnc.ini on crash( remove ip / passwd)

[burzek]

Hi Rudi,

Sorry for late reply.
I have great news, it worked.
No more crashes when clipboard copying.
I will keep the crash test exe running so if there is any more other types of crashes you will receive them.

Thanks for your great help.
Burzek

[Rudi De Vos]

Great, i will commit the code.

Code: Select all

zlib/adler32.c
addler32_simd_ need to be disabled 
Never expected that the chromium zlib had this bug

[Rudi De Vos]

Fixed another potential crash spot.
New build ( 1.3.3 dev 10 with crash report)

https://www.uvnc.eu/download/133/crashrpt_133_3.zip