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Bug#697066: BUG: scheduling while atomic: swapper/0/0x00000800



On Sat, 2014-03-01 at 13:59 -0800, Vagrant Cascadian wrote:
> Package: src:linux
> Version: 3.2.54-2
> Followup-For: Bug #697066
> 
> I've encounted the same or similar bug ever since upgrading to 3.2.54-2. I
> can't reproduce it, but it has occurred several times after the upgrade in the
> last week.
> 
> In the logs I find lines like this:
> 
>   Mar  1 13:39:13 prl kernel: [14962.792448] BUG: scheduling while atomic: swapper/0/0/0x10000100
> 
> The system eventually locks up and goes unresponsive.
> 
> The kernel log suggested it was swap related, so I ran without swap for a
> while, and the bug *still* got triggered.

No, 'swapper' is the idle task.

> No idea if this is related, but most of the times it seems to happen shortly
> after coming out of hibernation(suspend-to-disk), or after periods of
> inactivity where the screen has gone blank. Happens if running X or on console
> only.
[...]

The call traces are quite different so I think this is a different bug
from #697066.

Ben.

-- 
Ben Hutchings
Time is nature's way of making sure that everything doesn't happen at once.

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