IB/mlx4: Change vma from shared to private
authorMaor Gottlieb <maorg@mellanox.com>
Wed, 29 Mar 2017 03:03:01 +0000 (06:03 +0300)
committerDoug Ledford <dledford@redhat.com>
Fri, 21 Apr 2017 16:26:05 +0000 (12:26 -0400)
commitca37a664a8e4e9988b220988ceb4d79e3316f195
treec7a6c5170599b6f07490ab071cb7bea868f4b420
parent22c3653d04bd0c67b75e99d85e0c0bdf83947df5
IB/mlx4: Change vma from shared to private

Anonymous VMA (->vm_ops == NULL) cannot be shared, otherwise
it would lead to SIGBUS.

Remove the shared flags from the vma after we change it to be
anonymous.

This is easily reproduced by doing modprobe -r while running a
user-space application such as raw_ethernet_bw.

Fixes: ae184ddeca5db ('IB/mlx4_ib: Disassociate support')
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
drivers/infiniband/hw/mlx4/main.c