AFAIK this has no effect whatsoever unless x86 suddenly turns into a
nommu architecture.  Nonetheless, not setting it is suspicious.

Reported-by: Nathan Lynch <[email protected]>
Signed-off-by: Andy Lutomirski <[email protected]>
---
 arch/x86/vdso/vma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/vdso/vma.c b/arch/x86/vdso/vma.c
index dbef622..970463b 100644
--- a/arch/x86/vdso/vma.c
+++ b/arch/x86/vdso/vma.c
@@ -138,7 +138,7 @@ static int map_vdso(const struct vdso_image *image, bool 
calculate_addr)
        vma = _install_special_mapping(mm,
                                       addr,
                                       -image->sym_vvar_start,
-                                      VM_READ,
+                                      VM_READ|VM_MAYREAD,
                                       &vvar_mapping);
 
        if (IS_ERR(vma)) {
-- 
1.9.3

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