1 files changed, 7 insertions, 0 deletions

diff --git a/arch/x86_64/ia32/syscall32.c b/arch/x86_64/ia32/syscall32.c
index 3e5ed20cba45..3ac935535e20 100644
--- a/arch/x86_64/ia32/syscall32.c
+++ b/arch/x86_64/ia32/syscall32.c
@@ -59,6 +59,13 @@ int syscall32_setup_pages(struct linux_binprm *bprm, int exstack)
         vma->vm_end = VSYSCALL32_END;
         /* MAYWRITE to allow gdb to COW and set breakpoints */
         vma->vm_flags = VM_READ|VM_EXEC|VM_MAYREAD|VM_MAYEXEC|VM_MAYWRITE;
+        /*
+         * 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.
+         */
+        vma->vm_flags |= VM_ALWAYSDUMP;
         vma->vm_flags |= mm->def_flags;
         vma->vm_page_prot = protection_map[vma->vm_flags & 7];
         vma->vm_ops = &syscall32_vm_ops;