From dda4d912cd753e1443beac4e7f92d97f24b57992 Mon Sep 17 00:00:00 2001
From: redickwang <redickwang@tencent.com>
Date: Fri, 19 May 2017 15:08:12 +0800
Subject: [PATCH] rgw: segment fault when shard id out of range

Fixes: http://tracker.ceph.com/issues/19732

Signed-off-by: redickwang <redickwang@tencent.com>
(cherry picked from commit ff4c40fc2e3c092d17a218ae6132de4e6034c8ee)
---
 src/rgw/rgw_bucket.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/rgw/rgw_bucket.cc b/src/rgw/rgw_bucket.cc
index 9e9c17c3099da..bc462389e5beb 100644
--- a/src/rgw/rgw_bucket.cc
+++ b/src/rgw/rgw_bucket.cc
@@ -1743,6 +1743,8 @@ int RGWDataChangesLog::list_entries(int shard, const real_time& start_time, cons
 				    const string& marker,
 				    string *out_marker,
 				    bool *truncated) {
+  if (shard >= num_shards)
+    return -EINVAL;
 
   list<cls_log_entry> log_entries;
 
-- 
2.39.5