On Fri, Nov 13, 2020 at 11:19:34PM -0700, Nathan Chancellor wrote: > Assuming so, I have attached the output both with and without the > WARN_ON. Looks like mountinfo is what is causing the error? Cute... FWIW, on #origin + that commit with fix folded in I don't see anything unusual in reads from mountinfo ;-/ OTOH, they'd obviously been... creative with readv(2) arguments, so it would be very interesting to see what it is they are passing to it. I'm half-asleep right now; will try to cook something to gather that information tomorrow morning. 'Later...