On 08/05/2015 04:49 PM, Leonid Yegoshin wrote:
This is a last step of 3 patches which shift FPU emulation out of
stack into protected area. So, it disables a default executable stack.
NAK.
You cannot change the default.
If you want a non-executable stack, the program has to request it with
the proper annotations in its ELF file.
David Daney.
Additionally, it sets a default data area non-executable protection.
Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@xxxxxxxxxx>
---
arch/mips/include/asm/page.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/mips/include/asm/page.h b/arch/mips/include/asm/page.h
index 89dd7fed1a57..0b6cec4a1b80 100644
--- a/arch/mips/include/asm/page.h
+++ b/arch/mips/include/asm/page.h
@@ -228,7 +228,7 @@ extern int __virt_addr_valid(const volatile void *kaddr);
#define virt_addr_valid(kaddr) \
__virt_addr_valid((const volatile void *) (kaddr))
-#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
+#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#define UNCAC_ADDR(addr) ((addr) - PAGE_OFFSET + UNCAC_BASE)
