ARM: 8311/1: Don't use is_module_addr in setting page attributes

The set_memory_* functions currently only support module
addresses. The addresses are validated using is_module_addr.
That function is special though and relies on internal state
in the module subsystem to work properly. At the time of
module initialization and calling set_memory_*, it's too early
for is_module_addr to work properly so it always returns
false. Rather than be subject to the whims of the module state,
just bounds check against the module virtual address range.

Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/mm/pageattr.c b/arch/arm/mm/pageattr.c
index 004e35c..cf30daf 100644 (file)
--- a/arch/arm/mm/pageattr.c
+++ b/arch/arm/mm/pageattr.c
@@ -49,7 +49,10 @@ static int change_memory_common(unsigned long addr, int numpages,
                WARN_ON_ONCE(1);
        }
 
-       if (!is_module_address(start) || !is_module_address(end - 1))
+       if (start < MODULES_VADDR || start >= MODULES_END)
+               return -EINVAL;
+
+       if (end < MODULES_VADDR || start >= MODULES_END)
                return -EINVAL;
 
        data.set_mask = set_mask;