fix a potential infinite loop

fix-a-potential-infinite-loop.patch

@@ -0,0 +1,27 @@
+From 7fe098ae34b54d41ec9273c7ae51ee8e708c8193 Mon Sep 17 00:00:00 2001
+From: Kou Wenqi <kouwenqi@kylinos.cn>
+Date: Mon, 20 Jun 2022 17:31:32 +0800
+Subject: [PATCH] fix a potential infinite loop
+
+---
+ src/dbinc/shqueue.h | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/src/dbinc/shqueue.h b/src/dbinc/shqueue.h
+index 5fdbf47..8f185b5 100644
+--- a/src/dbinc/shqueue.h
++++ b/src/dbinc/shqueue.h
+@@ -261,8 +261,8 @@ struct {								\
+ #define	SH_TAILQ_NEXTP(elm, field, type)				\
+ 	((struct type *)((u_int8_t *)(elm) + (elm)->field.stqe_next))
+ 
+-#define	SH_TAILQ_NEXT(elm, field, type)					\
+-	((elm)->field.stqe_next == -1 ? NULL :				\
++#define	SH_TAILQ_NEXT(elm, field, type)													\
++	(((elm)->field.stqe_next == -1 || (elm)->field.stqe_next == 0) ? NULL :				\
+ 	((struct type *)((u_int8_t *)(elm) + (elm)->field.stqe_next)))
+ 
+   /*
+-- 
+2.23.0
+

libdb.spec

@@ -1,6 +1,6 @@
 Name:		libdb
 Version:	5.3.28
-Release:	38
+Release:	39
 Summary:	The Berkeley DB database library for C
 License:	BSD and LGPLv2 and Sleepycat
 URL:		https://www.oracle.com/database/berkeley-db/
@@ -38,6 +38,7 @@ Patch38:        bugfix-fix-deadlock-on-mempool-file-locks.patch
 Patch39:        libdb-limit-cpu.patch
 Patch40:        libdb-cbd-race.patch
 Patch41:        add-check-for-device-number-in-__check_lock_fn.patch
+Patch42:        fix-a-potential-infinite-loop.patch
 
 BuildRequires:	gcc gcc-c++ perl-interpreter libtool tcl-devel >= 8.5.2-3 
 BuildRequires:  java-devel >= 1:1.6.0 chrpath zlib-devel
@@ -118,6 +119,7 @@ popd
 %patch39 -p1
 %patch40 -p1
 %patch41 -p1
+%patch42 -p1
 
 pushd dist
 ./s_config
@@ -210,6 +212,9 @@ mv man/* %{buildroot}%{_mandir}/man1/
 %{_mandir}/man1
 
 %changelog
+* Tue Jul 12 2022 Kou Wenqi <kouwenqi@kylinos.cn> - 5.3.28-39
+- Fix a potential infinite loop
+
 * Tue Jun 28 2022 panxiaohe <panxh.life@foxmail.com> - 5.3.28-38
 - add check for device number in __check_lock_fn