* Christoph Mathys | 2015-12-22 13:36:19 [+0100]:
>I tried to reproduce this bug in kvm, hoping to get copy/pastable
>dumps. The test didn't run at all, instead I got a stunning number of
>the following slowpath warning (seem like it was repeated over 100
>times during 9ms). I see them occasionally (less than once every few
>minutes) on real hardware as well. I don't know what to make of them
>and if they can help in any way. Here is the repeated message:
>
>[ 63.141432] WARNING: CPU: 0 PID: 54 at kernel/res_counter.c:28
>res_counter_uncharge_until+0x98/0xa0()
It seems the ressource counter code is somehow unbalanced. It has its
own lock but you see what you see.
You could try without CONFIG_RESOURCE_COUNTERS or switch to v4.1 instead
since it has the file in question removed as per 5b1efc027c0b ("kernel:
res_counter: remove the unused API").
Sebastian
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