1 files changed, 2 insertions, 0 deletions

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 02d32baa23ac..a3a8a87d7e91 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -808,6 +808,7 @@ void trace_find_cmdline(int pid, char comm[])
                 return;
         }
 
+        preempt_disable();
         __raw_spin_lock(&trace_cmdline_lock);
         map = map_pid_to_cmdline[pid];
         if (map != NO_CMDLINE_MAP)
@@ -816,6 +817,7 @@ void trace_find_cmdline(int pid, char comm[])
                 strcpy(comm, "<...>");
 
         __raw_spin_unlock(&trace_cmdline_lock);
+        preempt_enable();
 }
 
 void tracing_record_cmdline(struct task_struct *tsk)