1 files changed, 1 insertions, 1 deletions

diff --git a/arch/ia64/kernel/ptrace.c b/arch/ia64/kernel/ptrace.c
index f1ec129ae3a1..3f8918782e0c 100644
--- a/arch/ia64/kernel/ptrace.c
+++ b/arch/ia64/kernel/ptrace.c
@@ -607,7 +607,7 @@ find_thread_for_addr (struct task_struct *child, unsigned long addr)
          */
         list_for_each_safe(this, next, &current->children) {
                 p = list_entry(this, struct task_struct, sibling);
-                if (p->mm != mm)
+                if (p->tgid != child->tgid)
                         continue;
                 if (thread_matches(p, addr)) {
                         child = p;