On Fri, 12 Jan 2018, Joseph Salisbury wrote: > Hi Vikas, > > A kernel bug report was opened against Ubuntu [0]. After a kernel > bisect, it was found that reverting the following commit resolved this bug: > > commit 24247aeeabe99eab13b798ccccc2dec066dd6f07 > Author: Vikas Shivappa <vikas.shivappa@xxxxxxxxxxxxxxx> > Date: Tue Aug 15 18:00:43 2017 -0700 > > x86/intel_rdt/cqm: Improve limbo list processing > > > The regression was introduced as of v4.14-r1 and still exists with > current mainline. The trace with v4.15-rc7 is in comment #44[1]. > > I was hoping to get your feedback, since you are the patch author. Do > you think gathering any additional data will help diagnose this issue, > or would it be best to submit a revert request? That stinks like a use after free. Can you run with KASAN enabled? Thanks, tglx