From: liu shi <liu.shi@navercorp.com>
Date: Fri, 14 May 2021 07:51:01 +0000 (-0400)
Subject: cpu_profiler: fix asok command crash
X-Git-Tag: v16.2.14~3^2~1
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=d83d472f63616c55e7dee1013bde77de8167cf1c;p=ceph.git

cpu_profiler: fix asok command crash

fixes: https://tracker.ceph.com/issues/50814
Signed-off-by: liu shi <liu.shi@navercorp.com>
(cherry picked from commit be7303aafe34ae470d2fd74440c3a8d51fcfa3ff)
---

diff --git a/src/perfglue/cpu_profiler.cc b/src/perfglue/cpu_profiler.cc
index ea1be7e95959..81f2ccf8c9f6 100644
--- a/src/perfglue/cpu_profiler.cc
+++ b/src/perfglue/cpu_profiler.cc
@@ -22,7 +22,7 @@
 void cpu_profiler_handle_command(const std::vector<std::string> &cmd,
 				 std::ostream& out)
 {
-  if (cmd[1] == "status") {
+  if (cmd.size() == 1 && cmd[0] == "status") {
     ProfilerState st;
     ProfilerGetCurrentState(&st);
     out << "cpu_profiler " << (st.enabled ? "enabled":"not enabled")
@@ -30,7 +30,7 @@ void cpu_profiler_handle_command(const std::vector<std::string> &cmd,
 	<< " profile_name " << st.profile_name
 	<< " samples " << st.samples_gathered;
   }
-  else if (cmd[1] == "flush") {
+  else if (cmd.size() == 1 && cmd[0] == "flush") {
     ProfilerFlush();
     out << "cpu_profiler: flushed";
   }