1 files changed, 8 insertions, 3 deletions

diff --git a/mm/process_vm_access.c b/mm/process_vm_access.c
index 5d453e58ddbf..07514d41ebcc 100644
--- a/mm/process_vm_access.c
+++ b/mm/process_vm_access.c
@@ -98,9 +98,14 @@ static int process_vm_rw_single_vec(unsigned long addr,
                 int pages = min(nr_pages, max_pages_per_loop);
                 size_t bytes;
 
-                /* Get the pages we're interested in */
-                pages = get_user_pages_unlocked(task, mm, pa, pages,
-                                                vm_write, 0, process_pages);
+                /*
+                 * Get the pages we're interested in.  We must
+                 * add FOLL_REMOTE because task/mm might not
+                 * current/current->mm
+                 */
+                pages = __get_user_pages_unlocked(task, mm, pa, pages,
+                                                  vm_write, 0, process_pages,
+                                                  FOLL_REMOTE);
                 if (pages <= 0)
                         return -EFAULT;