Re: [lkp] [NFSv4] 931437ee2c: BUG: sleeping function called from invalid context at mm/slab.h:393

From: Sebastian Andrzej Siewior
Date: Fri Oct 28 2016 - 17:08:30 EST


On 2016-10-25 14:52:39 [+0800], kernel test robot wrote:
>
> FYI, we noticed the following commit:
>
> https://github.com/0day-ci/linux Sebastian-Andrzej-Siewior/NFSv4-replace-seqcount_t-with-a-seqlock_t/20161022-013104
> commit 931437ee2c100a50c36771c947ce3674f8160592 ("NFSv4: replace seqcount_t with a seqlock_t")
>
> in testcase: ebizzy
> with following parameters:
>
> nr_threads: 200%
> iterations: 100x
> duration: 10s
>
>
> ebizzy is designed to generate a workload resembling common web application server workloads.
>
>
> on test machine: qemu-system-x86_64 -enable-kvm -cpu kvm64,+ssse3 -m 1G

It can't get it triggered. In fact I never get even close to the code
path. I tried NFS as rootfs and this test of yours. And I tried
"xfstests-dev -nfs" with no luck.
So you have NFS as your rootfs. Anything special on the server side? It
seems to be a basic NFSv4 export.

Sebastian