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-   -   Bug#685608: Acknowledgement (linux-image-3.2.0-3-amd64: unable to handle kernel paging request __d_shrink) (http://www.linux-archive.org/debian-kernel/696679-bug-685608-acknowledgement-linux-image-3-2-0-3-amd64-unable-handle-kernel-paging-request-__d_shrink.html)

Pauli Nieminen 08-22-2012 01:23 PM

Bug#685608: Acknowledgement (linux-image-3.2.0-3-amd64: unable to handle kernel paging request __d_shrink)
 
I forgot to add a few important details:

The laptop gets suspended and resumed frequantly. After resume radeon
always tries to fakeup but HW is in sleept state by vgaswitcheroo.

Also before the oops I was browsing with iceweacel and having nonfree
flash showing live bridge vugraph from World Mind Sport Games. Desktop
is gnome-shell so there was fair bit of acitivty for graphics driver.


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Pauli Nieminen 10-08-2012 09:53 AM

Bug#685608: Acknowledgement (linux-image-3.2.0-3-amd64: unable to handle kernel paging request __d_shrink)
 
I have now been running the debug config kernel since posting this
bug. There has been no lockdep or slab debug reports in kernel log
since. That makes me wonder what is possible cause of the twice
produced oops in __d_shrink.

I have been using suspend multiple times per day. I have applied all
normal stress to dentry cache through normal use and background file
system scan operations like security checks and defragmentation. Also
log rotation has been done multiple times if that could be original
cause somehow.

If anyone has any ideas how dentry cache could be stressed to
reproduce the issue I would be happy to try it.


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