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-rw-r--r--arch/blackfin/kernel/ptrace.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/blackfin/kernel/ptrace.c b/arch/blackfin/kernel/ptrace.c
index d2d388536630..594e325b40e4 100644
--- a/arch/blackfin/kernel/ptrace.c
+++ b/arch/blackfin/kernel/ptrace.c
@@ -160,15 +160,15 @@ put_reg(struct task_struct *task, int regno, unsigned long data)
160static inline int is_user_addr_valid(struct task_struct *child, 160static inline int is_user_addr_valid(struct task_struct *child,
161 unsigned long start, unsigned long len) 161 unsigned long start, unsigned long len)
162{ 162{
163 struct vm_list_struct *vml; 163 struct vm_area_struct *vma;
164 struct sram_list_struct *sraml; 164 struct sram_list_struct *sraml;
165 165
166 /* overflow */ 166 /* overflow */
167 if (start + len < start) 167 if (start + len < start)
168 return -EIO; 168 return -EIO;
169 169
170 for (vml = child->mm->context.vmlist; vml; vml = vml->next) 170 vma = find_vma(child->mm, start);
171 if (start >= vml->vma->vm_start && start + len < vml->vma->vm_end) 171 if (vma && start >= vma->vm_start && start + len <= vma->vm_end)
172 return 0; 172 return 0;
173 173
174 for (sraml = child->mm->context.sram_list; sraml; sraml = sraml->next) 174 for (sraml = child->mm->context.sram_list; sraml; sraml = sraml->next)