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-rw-r--r--mm/process_vm_access.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/mm/process_vm_access.c b/mm/process_vm_access.c
index 5d453e58d..07514d41e 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;