On Fri 07-06-19 03:11:14, Ajay Kaher wrote: [...] > [Ajay: Dropped infiniband changes to get patch to apply on 4.9.y] > Signed-off-by: Ajay Kaher <akaher@xxxxxxxxxx> > --- > fs/proc/task_mmu.c | 18 ++++++++++++++++++ > fs/userfaultfd.c | 9 +++++++++ > include/linux/sched.h | 21 +++++++++++++++++++++ > mm/mmap.c | 7 ++++++- > 4 files changed, 54 insertions(+), 1 deletion(-) Are you sure that the backport is complete? I do not see binder code to be patched, nor khugepaged. Have you considered all places that take the exclusive mmap_sem on a remote process mm? See my backport for 4.4 stable tree http://lkml.kernel.org/r/20190604094953.26688-1-mhocko@xxxxxxxxxx for reference. Also please note that my backport needs to be reviewed as well. -- Michal Hocko SUSE Labs