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-   -   BUG: 9742 Beta, 8800 GTS, Xserver crash Due to seg fault in NV driver (http://www.nvnews.net/vbulletin/showthread.php?t=80886)

crakarjax 11-21-06 12:09 PM

BUG: 9742 Beta, 8800 GTS, Xserver crash Due to seg fault in NV driver
 
2 Attachment(s)
System specs:

hp P4 with 1gb ram
ASUS 8800 GTS
9742 beta drivers
RHELv4 update 4
kernel 2.6.9-42 ELsmp

Description:

This problem does not occur in the 8774 drivers.
Running some OpenGL stuff, x-server restarts, or crashes with "NoTrapSignals". OpenGL routine runs fine the first time around, and the second time, xserver goes down.

from core dump...
SIGNAL 11 (seg fault) in module nvidia_drv.so...

(gdb) backtrace
#0 0x0099bffa in _nv001808X ()
from /usr/X11R6/lib/modules/drivers/nvidia_drv.so
#1 0x0099a035 in _nv001838X ()
from /usr/X11R6/lib/modules/drivers/nvidia_drv.so

I have attached a precrash(after the first run) bug log, as well as one that I got via remoting into the box after it crashed.

For reference, this crash occurred when I was using a 7900GTX and the 96xx official drivers as well. Not sure if it is there in the 8776 drivers, but whatever security fixes were added there might be worth checking out.

If you need any more info, please let me know. Thanks!

Russell

netllama 11-21-06 12:13 PM

Re: BUG: 9742 Beta, 8800 GTS, Xserver crash Due to seg fault in NV driver
 
1.0-8776 didn't support any G80 cards, so I wouldn't expect this to reproduce there.

Specifically which applications are you running that trigger this problem?

crakarjax 11-21-06 12:20 PM

Re: BUG: 9742 Beta, 8800 GTS, Xserver crash Due to seg fault in NV driver
 
Should have clarified... This problem occurs in the 7900GTX as well. Also occurs in the 7600 GS, and we have used these cards in the 8774/6 driver series.

As for the application, I believe we had talked about it before but I was not sure that it was an nvidia issue then. I am using OpenGL code to perform FFTs via the GPU. If I had access to the CUDA sdk this might not be a problem (hint hint) but for now, it is a problem. I believe that my FFT code actually completes before the system goes down, based on the output I can see before the screen goes blank. After this FFT code (C++), the function returns to soem FORTRN 77 code to do some other work on the data.

netllama 11-21-06 12:22 PM

Re: BUG: 9742 Beta, 8800 GTS, Xserver crash Due to seg fault in NV driver
 
Please provide a means of reproducing this problem.

Thanks,
Lonni

crakarjax 11-21-06 01:22 PM

Re: BUG: 9742 Beta, 8800 GTS, Xserver crash Due to seg fault in NV driver
 
I'm afraid I cannot, the software platform we are using is a proprietary system and connot be released. I can give you my core dump if it would help.

netllama 11-21-06 01:25 PM

Re: BUG: 9742 Beta, 8800 GTS, Xserver crash Due to seg fault in NV driver
 
I'm afraid that without a means of reproducing this crash, there isn't much else I can do.

crakarjax 11-21-06 01:30 PM

Re: BUG: 9742 Beta, 8800 GTS, Xserver crash Due to seg fault in NV driver
 
I'll see if I can put together a stripped-down system.

crakarjax 11-21-06 02:55 PM

Re: BUG: 9742 Beta, 8800 GTS, Xserver crash Due to seg fault in NV driver
 
Sorry, I can't give you the code we are using. Can't you use my core dump or the logs to determine the problem? Is there anything you can think of that would cause the nvidia module to seg fault?

crakarjax 11-27-06 11:09 AM

Re: BUG: 9742 Beta, 8800 GTS, Xserver crash Due to seg fault in NV driver
 
Update: the crash occurs during a call to

glFramebufferTexture2DEXT( -- , -- , -- , 1, 0);


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