On Mon, Jul 23, 2018 at 02:49:27PM +0530, Mukesh Ojha wrote: > On 7/23/2018 1:57 PM, Mukesh Ojha wrote: > > > > Hi All, > > > > I wanted to discuss about one of the corner case exists in 4.9 kernel > > (4.9.x) where 4.9 is over 1 1/2 years old now. Please test this on 4.17 or better yet, 4.18-rc as the cpu hotplug path has been radically cleaned up and changed since 4.9 was released. If you are stuck with 4.9 for some odd reason, sorry, but you really are on your own. I recommend going and asking for support from the people that are forcing you to stick with that kernel. good luck! greg k-h