Vikas, Fenghua can you please look at that ASAP? On Sun, 14 Jan 2018, Thomas Gleixner wrote:
> 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.shiva...@linux.intel.com> > > 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
