X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=arch%2Fblackfin%2Fkernel%2Fptrace.c;h=b35839354130d902453b0cdffad4ed9de4a583f7;hb=2c518959f082c549d6c6dd9b5380aec40c3eb07f;hp=6ec77685df526899c6998fe3030513714d42d5a8;hpb=7a996d3ab150bb0e1b71fa182f70199a703efdd1;p=pandora-kernel.git

diff --git a/arch/blackfin/kernel/ptrace.c b/arch/blackfin/kernel/ptrace.c
index 6ec77685df52..b35839354130 100644
--- a/arch/blackfin/kernel/ptrace.c
+++ b/arch/blackfin/kernel/ptrace.c
@@ -27,6 +27,7 @@
 #include <asm/fixed_code.h>
 #include <asm/cacheflush.h>
 #include <asm/mem_map.h>
+#include <asm/mmu_context.h>
 
 /*
  * does not yet catch signals sent when the child dies.
@@ -113,8 +114,8 @@ put_reg(struct task_struct *task, long regno, unsigned long data)
 /*
  * check that an address falls within the bounds of the target process's memory mappings
  */
-static inline int is_user_addr_valid(struct task_struct *child,
-				     unsigned long start, unsigned long len)
+int
+is_user_addr_valid(struct task_struct *child, unsigned long start, unsigned long len)
 {
 	struct vm_area_struct *vma;
 	struct sram_list_struct *sraml;
@@ -135,6 +136,13 @@ static inline int is_user_addr_valid(struct task_struct *child,
 	if (start >= FIXED_CODE_START && start + len < FIXED_CODE_END)
 		return 0;
 
+#ifdef CONFIG_APP_STACK_L1
+	if (child->mm->context.l1_stack_save)
+		if (start >= (unsigned long)l1_stack_base &&
+			start + len < (unsigned long)l1_stack_base + l1_stack_len)
+			return 0;
+#endif
+
 	return -EIO;
 }