https://bugs.winehq.org/show_bug.cgi?id=42145
Bug ID: 42145 Summary: Guild Wars 2 crashes on some configurations Product: Wine Version: 2.0-rc3 Hardware: x86-64 OS: Linux Status: UNCONFIRMED Severity: normal Priority: P2 Component: -unknown Assignee: wine-bugs@winehq.org Reporter: me@aaronopfer.com Distribution: ---
Created attachment 56713 --> https://bugs.winehq.org/attachment.cgi?id=56713 GW2-generated crash log
Guild Wars 2 crashes on my laptop psuedorandomly while playing the game. I managed to create a reproduceable version of the crash: all I have to do is toggle the visibility of my helmet slot in my Hero's Equipment panel (a feature designed for those who don't want ugly helmets covering their character's faces) and the game will reliably crash.
I am using 64bit wine. I reproduced the crash initially in 2.0.0-rc3-staging, then in 2.0.0-rc3, and then again in 1.7.35. I haven't tested any other versions.
The crash does NOT occur on my desktop despite similar wine versions and configurations. The main difference between the laptop and the desktop is that the desktop uses the proprietary nvidia blob on a GTX 780, and the laptop uses integrated intel HD 5500 graphics. The laptop and desktop are running the debian 4.8.0 kernel.
As an aside, another laptop I have running debian is using a nvidia mobile GPU (don't remember the model) via bumblebee and it also has no problems with crashing in GW2.
I have some modest debugging skills: poking around in a debugger shows that the crash occurs in what appears to be blitting code (the Gw2-64.exe binary makes string references to "ImgBlt.cpp" in the area). The fault instruction is a rep movsb. During normal operation the rep movsb's operands are in low memory ranges (mask 0xFFFFFFFF), but when it crashes one operand is (0x0222000000000000) which is not valid memory and causes a crash.
I do not have a Windows machine so I do not know if Windows has the same crash; I presume not.
I have attached the Arenanet.log file which contains some information about what went wrong. It may contain multiple crashes; I'm not very familiar with these GW2-specific crashlogs so I'm not sure. These are made by GW2's built-in crash logger. If anyone wants another crash log format you'll have to tell me how to disable GW2's built-in one.
If anyone wants me to do any specific debug actions or logs I'll be happy to try them.