[ARM] 5404/1: Fix condition in arm_elf_read_implies_exec() to set READ_IMPLIES_EXEC

READ_IMPLIES_EXEC must be set when:
o binary _is_ an executable stack (i.e. not EXSTACK_DISABLE_X)
o processor architecture is _under_ ARMv6 (XN bit is supported from ARMv6)

Signed-off-by: Makito SHIOKAWA <lkhmkt@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/kernel/elf.c b/arch/arm/kernel/elf.c
index 8484909..d4a0da1 100644 (file)
--- a/arch/arm/kernel/elf.c
+++ b/arch/arm/kernel/elf.c
@@ -74,9 +74,9 @@ EXPORT_SYMBOL(elf_set_personality);
  */
 int arm_elf_read_implies_exec(const struct elf32_hdr *x, int executable_stack)
 {
-       if (executable_stack != EXSTACK_ENABLE_X)
+       if (executable_stack != EXSTACK_DISABLE_X)
                return 1;
-       if (cpu_architecture() <= CPU_ARCH_ARMv6)
+       if (cpu_architecture() < CPU_ARCH_ARMv6)
                return 1;
        return 0;
 }