On Wed 25 Sep at 19:44:36 +0200 mi...@kernel.org said:
* Timothy Pepper timothy.c.pep...@linux.intel.com wrote:
On Wed 25 Sep at 09:30:49 +0200 mi...@kernel.org said:
info.flags = VM_UNMAPPED_AREA_TOPDOWN;
info.length = len;
- info.low_limit = PAGE_SIZE;
* Timothy Pepper timothy.c.pep...@linux.intel.com wrote:
A security check is performed on mmap addresses in
security/security.c:security_mmap_addr(). It uses mmap_min_addr to insure
mmaps don't get addresses lower than a user configurable guard value
(/proc/sys/vm/mmap_min_addr). The arch
On Wed 25 Sep at 09:30:49 +0200 mi...@kernel.org said:
info.flags = VM_UNMAPPED_AREA_TOPDOWN;
info.length = len;
- info.low_limit = PAGE_SIZE;
+ info.low_limit = max(PAGE_SIZE, PAGE_ALIGN(mmap_min_addr));
info.high_limit = mm-mmap_base;
info.align_mask = filp ?
* Timothy Pepper timothy.c.pep...@linux.intel.com wrote:
On Wed 25 Sep at 09:30:49 +0200 mi...@kernel.org said:
info.flags = VM_UNMAPPED_AREA_TOPDOWN;
info.length = len;
- info.low_limit = PAGE_SIZE;
+ info.low_limit = max(PAGE_SIZE, PAGE_ALIGN(mmap_min_addr));
On Tue, Sep 24, 2013 at 02:23:31PM -0700, Timothy Pepper wrote:
diff --git a/arch/arm/mm/mmap.c b/arch/arm/mm/mmap.c
index 0c63562..0e7355d 100644
--- a/arch/arm/mm/mmap.c
+++ b/arch/arm/mm/mmap.c
@@ -9,6 +9,7 @@
#include linux/io.h
#include linux/personality.h
#include linux/random.h