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authorRussell King <rmk+kernel@arm.linux.org.uk>2010-07-31 14:20:16 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-07-31 14:20:16 +0100
commit7b70c4275f28702b76b273c8534c38f8313812e9 (patch)
tree1df2229ca02466bd1adda814ac5c37aa0a597db1 /arch/arm/kernel/process.c
parentceb0885d3b01bb2e2f18765770e212914f2864be (diff)
parenta20df564d15bd28e3df24e1c65b885bd74d23f17 (diff)
Merge branch 'devel-stable' into devel
Conflicts: arch/arm/kernel/entry-armv.S arch/arm/kernel/setup.c arch/arm/mm/init.c
Diffstat (limited to 'arch/arm/kernel/process.c')
-rw-r--r--arch/arm/kernel/process.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 2e2ec97cc50..401e38be1f7 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -28,6 +28,7 @@
#include <linux/tick.h>
#include <linux/utsname.h>
#include <linux/uaccess.h>
+#include <linux/random.h>
#include <asm/cacheflush.h>
#include <asm/leds.h>
@@ -37,6 +38,12 @@
#include <asm/stacktrace.h>
#include <asm/mach/time.h>
+#ifdef CONFIG_CC_STACKPROTECTOR
+#include <linux/stackprotector.h>
+unsigned long __stack_chk_guard __read_mostly;
+EXPORT_SYMBOL(__stack_chk_guard);
+#endif
+
static const char *processor_modes[] = {
"USER_26", "FIQ_26" , "IRQ_26" , "SVC_26" , "UK4_26" , "UK5_26" , "UK6_26" , "UK7_26" ,
"UK8_26" , "UK9_26" , "UK10_26", "UK11_26", "UK12_26", "UK13_26", "UK14_26", "UK15_26",
@@ -445,3 +452,9 @@ unsigned long get_wchan(struct task_struct *p)
} while (count ++ < 16);
return 0;
}
+
+unsigned long arch_randomize_brk(struct mm_struct *mm)
+{
+ unsigned long range_end = mm->brk + 0x02000000;
+ return randomize_range(mm->brk, range_end, 0) ? : mm->brk;
+}