Messages in this thread Patch in this message | | | From | Andy Lutomirski <> | Subject | [PATCH] x86,vdso: Set VM_MAYREAD for the vvar vma | Date | Fri, 25 Jul 2014 16:27:01 -0700 |
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AFAIK this has no effect whatsoever unless x86 suddenly turns into a nommu architecture. Nonetheless, not setting it is suspicious.
Reported-by: Nathan Lynch <Nathan_Lynch@mentor.com> Signed-off-by: Andy Lutomirski <luto@amacapital.net> --- 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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