1 files changed, 1 insertions, 1 deletions

diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index b0ace60ce596..7c76f2ffaeaa 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -169,7 +169,7 @@ int ptrace_attach(struct task_struct *task)
         retval = -EPERM;
         if (task->pid <= 1)
                 goto out;
-        if (task->tgid == current->tgid)
+        if (same_thread_group(task, current))
                 goto out;
 
 repeat: