On Fri, Feb 23, 2018 at 4:14 AM, Peter Zijlstra <pet...@infradead.org> wrote: > On Thu, Feb 22, 2018 at 08:59:47PM -0800, Cong Wang wrote: >> Hello, >> >> We keep seeing the following kernel warning from 3.10 kernel to 4.9 >> kernel, it exists for a rather long time. >> >> Google search shows there was a patch from Ingo: >> https://patchwork.kernel.org/patch/6308681/ >> >> but it doesn't look like ever merged into mainline... >> >> I don't know how it is triggered. Please let me know if any other >> information I can provide. > > What exact workload are you using to reproduce?
I have no idea how to reproduce it. It has been reported so many times from so many different machines via ABRT. > > And I'm taking that the patch 'works' for you? I don't try it yet, because according to Ingo himself, that patch is not complete: " Also, I'd apply the quirk not just to Haswell, but Nehalem, Westmere and Ivy Bridge as well, I have seen it as early as on a Nehalem prototype box. " I can try it if that patch makes sense for you and if you can make it complete. ;) > > Given the HSD143 errata and its possible relevance, have you tried > changing the magic number to 32, does it then still fix things? > > No real objection to the patch as such, it just needs a coherent comment > and a tested-by tag I think. I will give it a try. Please let me know if you have an updated version of that patch I can apply on recent kernel (4.9), since it was made almost 3 years ago, otherwise I can apply it manually. It will take some time due to the deployment process of a new kernel. Thanks!
