1 files changed, 9 insertions, 2 deletions

diff --git a/mm/memory.c b/mm/memory.c
index af227d26e104..ef09f0acb1d8 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2606,8 +2606,15 @@ static int __init gate_vma_init(void)
         gate_vma.vm_mm = NULL;
         gate_vma.vm_start = FIXADDR_USER_START;
         gate_vma.vm_end = FIXADDR_USER_END;
-        gate_vma.vm_page_prot = PAGE_READONLY;
-        gate_vma.vm_flags = 0;
+        gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC;
+        gate_vma.vm_page_prot = __P101;
+        /*
+         * Make sure the vDSO gets into every core dump.
+         * Dumping its contents makes post-mortem fully interpretable later
+         * without matching up the same kernel and hardware config to see
+         * what PC values meant.
+         */
+        gate_vma.vm_flags |= VM_ALWAYSDUMP;
         return 0;
 }
 __initcall(gate_vma_init);