Bug 103130

Downgrading to 17.2-2 (from 17.3 git) and LLVM 5. rectifies the issue. Possible regression?

Hi Adam,
reporting bugs is good! But for them to get resolved, you need to post some more information:
- What GPU are you using? (you can find that in the output of lspci and/or glxinfo)
- Which exact version of Mesa (Git commit) are you using? The same goes for LLVM and Kernel. Did you build these yourself or are you using packages from somewhere?
- What game are you talking about?

Since you report a regression (a downgrade helps you), you should note exactly what components you're downgrading (ideally with exact versions/Git commits). For those components you should do a git bisect to find the offending commit, that introduced the crash for you. For example: if you're saying Mesa 17.2.0 is working and Git HEAD is not, then you would need to do a bisection between these two points. You should end up with the offending commit in the end. If you changed more than one component (eg. LLVM and Mesa) in your downgrade you will most likely need to first find the actual component causing this issue.
Also, since you're reporting a crash, a backtrace might be helpful to see, where the crash occurs.

- What GPU are you using? (you can find that in the output of lspci and/or glxinfo)

VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere [Radeon RX 470/480/570/580] (rev e7)

- Which exact version of Mesa (Git commit) are you using? The same goes for LLVM and Kernel. Did you build these yourself or are you using packages from somewhere?

I did not build these myself. I'm using a Repo on OpenSuse. They are build from Git. LLVM 5, and Kernel 4.13.4-1

- What game are you talking about?

A wine game, Guild Wars 2, using Gallium Direct X9 state tracker.

I will do some googling to figure out how I can go about bisecting and backtracing. Those are two things I'm unfamiliar with. I did change more than one component through the YAST tool, I switched to a stable repo which uses stable Mesa 17.2 and LLVM 5.0. The error reported by wine specifically states "Mesa," as I copied and pasted that from log.

Thank you for the kind words :-)

This is the repo that didn't work:
http://download.opensuse.org/repositories/home:/forkbomb:/turboAMD/openSUSE_Tumbleweed/


This is the one that did:
http://download.opensuse.org/repositories/home:/forkbomb:/turboAMD-stable/openSUSE_Tumbleweed/

I upgraded to the offending repo. I attempted again with wine log -all. I get: 

mesa: for the -simplifycfg-sink-common option: may only occur zero or one times!
/bin/sh: line 1:  4553 Segmentation fault      (core dumped) '/usr/bin/wine' 'Gw2-64.exe'2>&1

(In reply to Adam from comment #5)
> I upgraded to the offending repo. I attempted again with wine log -all. I
> get: 
> 
> mesa: for the -simplifycfg-sink-common option: may only occur zero or one
> times!
> /bin/sh: line 1:  4553 Segmentation fault      (core dumped) '/usr/bin/wine'
> 'Gw2-64.exe'2>&1

This usually indicates error in LLVM initialization. Do you have multiple LLVM versions installed?

Thanks for the report!

The error message is benign. The only possible way in which it cause issues is if the application itself is also trying to use LLVM.

If you could provide a backtrace with debug symbols, that would be helpful.

LLVM is certainly the issue. I held back that update, and I didn't get the error. Then pushed the update and received it again going from LLVM 5.0 to LLVM 6.0. However, now the issue seems to be resolved completely. Not quite sure considering no update was pushed.