From: Xuehan Xu <xuxuehan@qianxin.com>
Date: Wed, 14 Aug 2024 03:00:00 +0000 (+0800)
Subject: crimson/os/seastore/btree: fix minor corner case issue
X-Git-Tag: v20.0.0~1257^2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=2d5715c00f01d5ee050e3cc7e7bacefcd33efa8c;p=ceph.git

crimson/os/seastore/btree: fix minor corner case issue

Signed-off-by: Xuehan Xu <xuxuehan@qianxin.com>
---

diff --git a/src/crimson/os/seastore/btree/fixed_kv_node.h b/src/crimson/os/seastore/btree/fixed_kv_node.h
index 0bde60ef18ed..eacf8a8cc401 100644
--- a/src/crimson/os/seastore/btree/fixed_kv_node.h
+++ b/src/crimson/os/seastore/btree/fixed_kv_node.h
@@ -148,7 +148,7 @@ struct FixedKVNode : ChildableCachedExtent {
     ceph_assert(iter != copy_dests_by_trans.end());
     auto &copy_dests = static_cast<copy_dests_t&>(*iter);
     auto it = copy_dests.dests_by_key.lower_bound(key);
-    if ((*it)->range.begin > key) {
+    if (it == copy_dests.dests_by_key.end() || (*it)->range.begin > key) {
       ceph_assert(it != copy_dests.dests_by_key.begin());
       --it;
     }