1 files changed, 1 insertions, 0 deletions

diff --git a/ipc/shm.c b/ipc/shm.c
index 4c28d2d8e305..9162123a7b23 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -870,6 +870,7 @@ asmlinkage long sys_shmdt(char __user *shmaddr)
          * could possibly have landed at. Also cast things to loff_t to
          * prevent overflows and make comparisions vs. equal-width types.
          */
+        size = PAGE_ALIGN(size);
         while (vma && (loff_t)(vma->vm_end - addr) <= size) {
                 next = vma->vm_next;