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-rw-r--r--kernel/ptrace.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 82a558b655d..3eca7a55f2e 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -233,6 +233,7 @@ int ptrace_detach(struct task_struct *child, unsigned int data)
/* Architecture-specific hardware disable .. */
ptrace_disable(child);
+ clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
write_lock_irq(&tasklist_lock);
/* protect against de_thread()->release_task() */