2009-01-22 10:07:17     Kernel Random Crash, Kernel panic - not syncing: Kernel exception

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2009-01-22 10:07:17     Kernel Random Crash, Kernel panic - not syncing: Kernel exception

Appalayagari Sreedhar (INDIA)

Message: 68241   

 

Hi,

 

I am working with 2007 R1 uClinux distribution BF533 Rev 0.5. Custom board.

 

Initial development we started with the tar ball version and later we upgraded the linux kernel alone to the latest SVN branch.

 

We are seeing kernel Random crash when we run our application. our application is a Audio playback code.

 

sometimes this happens at the playback of first song itself and some times it happens after 2 hours of playback. I am attaching the logs for your reference.  when i searched in the forum i could find the similar log what we got when our kernel crashes in the following link.

 

https://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=3344

 

Conclusion in the above link is that problem is not re producible,

 

we have struck up with this random crash of kernel problem.  please help us why this problem is happening to us. where we are doing wrong.

 

Best Regards, Sreedhar.

 

 

 

Kernel Crash.txt

Kernel Crash1.txt

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2009-01-26 14:24:50     Re: Kernel Random Crash, Kernel panic - not syncing: Kernel exception

Robin Getz (UNITED STATES)

Message: 68356   

 

Sreedhar:

 

From the crashes that you have:

 

> Data access CPLB miss

 

> Source : <0x001aca56> { _free_block + 0x96 }

> 3 Target : <0x001aca52> { _free_block + 0x92 }

 

and then

 

> Null Pointer

 

> Source : <0x001aca36> { _free_block + 0x76 }

> 3 Target : <0x001aca06> { _free_block + 0x46 }

 

The bug that you pointed to -- was only closed (in 2007-07-20) since it was not reproducable. - (not because it was fixed). Which was after the 2007 release, but after the 2008 release.

 

What is the svn version number (on the branch you are using). There are lots and lots and lots of bug fixes which are in the release for 2008 that are not in 2007.

 

Can you replicate the failures if you upgrade the kernel?

 

-Robin

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2009-01-27 07:16:32     Re: Kernel Random Crash, Kernel panic - not syncing: Kernel exception

Appalayagari Sreedhar (INDIA)

Message: 68389   

 

Hi Robin,

 

We have tried to simulate the problem with 2008R1.5 uClinux distribution, tar ball version. We have seen the similar log information.

 

I am attching the log report for your reference, please suggest us to solve this issue.

 

Best Regards, Sreedhar.

 

Kernelcrash2008R1.5.txt

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2009-01-27 07:41:41     Re: Kernel Random Crash, Kernel panic - not syncing: Kernel exception

Robin Getz (UNITED STATES)

Message: 68391   

 

Sreehar:

 

Without a test case - there isn't much to tell you. How are you reproducing the issue.

 

-Robin

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2009-01-27 07:42:26     Re: Kernel Random Crash, Kernel panic - not syncing: Kernel exception

Robin Getz (UNITED STATES)

Message: 68392   

 

Also - which exact svn version of 2008R1.5 are you using?

 

-Robin

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2009-01-27 08:13:43     Re: Kernel Random Crash, Kernel panic - not syncing: Kernel exception

Appalayagari Sreedhar (INDIA)

Message: 68398   

 

Hi Robin,

 

We used 2008 R1.5 tar ball version for testing, Our working system is Network player while playing the tracks we are seeing this problem.

 

I will try to get you some more info soon. please suggest me if you find any wrong doing in my work. i will try it out before i give you some more info.

 

Best Regards, Sreedhar.

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2009-01-27 08:22:57     Re: Kernel Random Crash, Kernel panic - not syncing: Kernel exception

Michael Hennerich (GERMANY)

Message: 68400   

 

Don't use the 2008R1 TarBall as is.

Get a svn update fist -

or better get the whole tree from your svn /branches/2008R1

-Michael

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