1 files changed, 1 insertions, 1 deletions

diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 5b8dd98a230e..b88d4186cd7a 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -155,7 +155,7 @@ int ptrace_attach(struct task_struct *task)
         retval = -EPERM;
         if (task->pid <= 1)
                 goto bad;
-        if (task == current)
+        if (task->tgid == current->tgid)
                 goto bad;
         /* the same process cannot be attached many times */
         if (task->ptrace & PT_PTRACED)