diff --git a/cmds/atrace/atrace.cpp b/cmds/atrace/atrace.cpp
index 6f2159d..8758516 100644
--- a/cmds/atrace/atrace.cpp
+++ b/cmds/atrace/atrace.cpp
@@ -444,7 +444,10 @@
 // Set the default size of cmdline hashtable
 static bool setCmdlineSize()
 {
-    return writeStr(k_traceCmdlineSizePath, "8192");
+    if (fileExists(k_traceCmdlineSizePath)) {
+        return writeStr(k_traceCmdlineSizePath, "8192");
+    }
+    return true;
 }
 
 // Set the clock to the best available option while tracing. Use 'boot' if it's
diff --git a/cmds/atrace/atrace.rc b/cmds/atrace/atrace.rc
index cef41be..5e9cef3 100644
--- a/cmds/atrace/atrace.rc
+++ b/cmds/atrace/atrace.rc
@@ -15,6 +15,8 @@
     chown root shell /sys/kernel/tracing/options/overwrite
     chown root shell /sys/kernel/debug/tracing/options/print-tgid
     chown root shell /sys/kernel/tracing/options/print-tgid
+    chown root shell /sys/kernel/debug/tracing/options/saved_cmdlines_size
+    chown root shell /sys/kernel/tracing/options/saved_cmdlines_size
     chown root shell /sys/kernel/debug/tracing/events/sched/sched_switch/enable
     chown root shell /sys/kernel/tracing/events/sched/sched_switch/enable
     chown root shell /sys/kernel/debug/tracing/events/sched/sched_wakeup/enable
@@ -63,6 +65,8 @@
     chmod 0664 /sys/kernel/tracing/options/overwrite
     chmod 0664 /sys/kernel/debug/tracing/options/print-tgid
     chmod 0664 /sys/kernel/tracing/options/print-tgid
+    chmod 0664 /sys/kernel/debug/tracing/options/saved_cmdlines_size
+    chmod 0664 /sys/kernel/tracing/options/saved_cmdlines_size
     chmod 0664 /sys/kernel/debug/tracing/events/sched/sched_switch/enable
     chmod 0664 /sys/kernel/tracing/events/sched/sched_switch/enable
     chmod 0664 /sys/kernel/debug/tracing/events/sched/sched_wakeup/enable