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QNX RTOS v4 [EOL]/Discussion/General/Proc fault/List of Posts
Forum Topic - Proc fault: (6 Items)
   
Update
s h(deleted)
12/08/2016 9:25 AM
post117263
Proc fault   
Hi,

From time to time we experience Proc faults.
Here are two pictures using Proc32 version 425.R.

I have read the QNX 4.25 System Architecture - The Process Manager,
Reading a QNX Proc Dump - http://www.qnx.com/developers/qnx4/qnx4kb/solution.html?code=9545
and Intel - Pentium SW Developers Manual - System Programming.

And all i can gather from Proc fault is:
processor exception #GP (general protection)
privity level 1 (inside Proc code segment)
and LDT index 0

Is there more information we can get from the dump?
We usually get answer that it is kernel data corruption, but no advice how to avoid these.

Note that we are not able to reproduce the problem, so far it seems random and the machines on which it occurs are in 
production on customer site.

Thank you,
stepan hejny
Attachment: Image ORB4B crash 20161201.jpg 617.09 KB Image 20161202_164100.jpg 251.63 KB
Oleg Bolshakov
12/09/2016 9:08 AM
post117265
Re: Proc fault   
Hi Stepan,

As I can see you have two different kernel crash screens, they have different crash addresses at least (cs:eip). Are 
these screens from the same machine? If not then there may be different causes for the crash. If these screens from the 
same machine then it may be an issue with hardware.

Do you have more crash screens? Do they all have different crash address? Does the crash occur only on one particular PC
 or hardware configuration? Can you reproduce the crash on another hardware / virtual machine?

Respectfully,
Oleg

8 дек. 2016 г., в 17:25:38, s h <community-noreply@qnx.com> написал:

> Hi,
> 
> From time to time we experience Proc faults.
> Here are two pictures using Proc32 version 425.R.
> 
> I have read the QNX 4.25 System Architecture - The Process Manager,
> Reading a QNX Proc Dump - http://www.qnx.com/developers/qnx4/qnx4kb/solution.html?code=9545
> and Intel - Pentium SW Developers Manual - System Programming.
> 
> And all i can gather from Proc fault is:
> processor exception #GP (general protection)
> privity level 1 (inside Proc code segment)
> and LDT index 0
> 
> Is there more information we can get from the dump?
> We usually get answer that it is kernel data corruption, but no advice how to avoid these.
> 
> Note that we are not able to reproduce the problem, so far it seems random and the machines on which it occurs are in 
production on customer site.
> 
> Thank you,
> stepan hejny
> 
> 
> 
> 
> _______________________________________________
> 
> General
> http://community.qnx.com/sf/go/post117263
> To cancel your subscription to this discussion, please e-mail general-qnx4-unsubscribe@community.qnx.com
> <ORB4B crash 20161201.jpg><20161202_164100.jpg>
s h(deleted)
12/09/2016 11:45 AM
post117266
Re: Proc fault   
Hi Oleg,

These two screens are from different machines.
We have more screens, not from Proc32 425.R, but from Proc32 425.X Mar 02 2007, i will attach one example, but we can 
provide more.
The eip which occurs most is 1461a, other addresses are 1462c, ca7a, 182c3.
Crashes occur on multiple machines, the machines are industrial PCs typically using same hardware configuration.
As far as i know, we are unable to reproduce the crash.

Thanks,
stepan hejny
Attachment: Image 160101_BO_MAIN.jpg 272.33 KB
Oleg Bolshakov
12/10/2016 3:33 AM
post117269
Re: Proc fault   
Hi Stepan,

Can you test your configuration with the latest Proc32 (with fixed -E0)? Send me crash screens with latest Proc32 if any
. I'll try to analyze them.

Respectfully,
Oleg

9 дек. 2016 г., в 19:45:21, s h <community-noreply@qnx.com> написал:

> Hi Oleg,
> 
> These two screens are from different machines.
> We have more screens, not from Proc32 425.R, but from Proc32 425.X Mar 02 2007, i will attach one example, but we can 
provide more.
> The eip which occurs most is 1461a, other addresses are 1462c, ca7a, 182c3.
> Crashes occur on multiple machines, the machines are industrial PCs typically using same hardware configuration.
> As far as i know, we are unable to reproduce the crash.
> 
> Thanks,
> stepan hejny
> 
> 
> 
> 
> _______________________________________________
> 
> General
> http://community.qnx.com/sf/go/post117266
> To cancel your subscription to this discussion, please e-mail general-qnx4-unsubscribe@community.qnx.com
> <160101_BO_MAIN.jpg>
s h(deleted)
12/12/2016 7:48 AM
post117270
Re: Proc fault   
Hi Oleg,

We will use the latest Proc32.

I don't have any crash screen from latest Proc32.
The incident rate is quite low, but when it happens, i'll post it here.

Thanks,
stepan hejny
Oleg Bolshakov
12/12/2016 8:01 AM
post117271
Re: Proc fault   
Hi Stepan,

I'll wait for your input. Then I'll try to analyze the crash, but it may be heavy without possibility to reproduce it.

Respectfully,
Oleg

12 дек. 2016 г., в 15:48:45, s h <community-noreply@qnx.com> написал:

> Hi Oleg,
> 
> We will use the latest Proc32.
> 
> I don't have any crash screen from latest Proc32.
> The incident rate is quite low, but when it happens, i'll post it here.
> 
> Thanks,
> stepan hejny
> 
> 
> 
> 
> _______________________________________________
> 
> General
> http://community.qnx.com/sf/go/post117270
> To cancel your subscription to this discussion, please e-mail general-qnx4-unsubscribe@community.qnx.com

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