It's a CentOS 7.2, so there is point in asking RHT. I'll try to persuade the customer to have a try with kernel version 4.9, if only I can get it work with CentOS 7.2. Dashi Cao -----Original Message----- From: Peter Zijlstra [mailto:peterz@xxxxxxxxxxxxx] Sent: Friday, December 23, 2016 10:20 PM To: Dashi DS1 Cao <caods1@xxxxxxxxxx> Cc: Hugh Dickins <hughd@xxxxxxxxxx>; Michal Hocko <mhocko@xxxxxxxxxx>; linux-mm@xxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx Subject: Re: A small window for a race condition in mm/rmap.c:page_lock_anon_vma_read On Fri, Dec 23, 2016 at 02:02:14AM +0000, Dashi DS1 Cao wrote: > The kernel version is "RELEASE: 3.10.0-327.36.3.el7.x86_64". It was the latest kernel release of CentOS 7.2 at that time, or maybe still now. This would be the point where we ask you to run a recent upstream kernel and try and reproduce the problem with that, or contact RHT for support on their franken-kernel ;-) -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href