偶发性报错 SSL read fail error: error:0A00010F:SSL routines::bad length

[giveup]

问题现象
日志出现

Sat Sep 28 00:09:15 2024 user.err smartdns: server 223.6.6.6 SSL read fail error: error:0A00010F:SSL routines::bad length
Sat Sep 28 08:56:42 2024 user.err smartdns: server 223.5.5.5 SSL read fail error: error:0A00010F:SSL routines::bad length
Sat Sep 28 08:56:42 2024 user.err smartdns: server 223.6.6.6 SSL read fail error: error:0A00010F:SSL routines::bad length
Sun Sep 29 05:04:11 2024 user.err smartdns: server 1.12.12.12 SSL read fail error: error:0A00010F:SSL routines::bad length

由于阿里dns会刷屏报错，因此日志只开启了err级别，无法看到上下文信息。

运行环境

1. 固件型号 ImmortalWrt 23.05.3

2. 运营商

3. smartdns来源以及版本 1.2024.v46.0.12-OpenWrt-openssl3

4. 涉及的配置(注意去除个人相关信息)

server-name smartdns
speed-check-mode tcp:443
dualstack-ip-selection no
prefetch-domain yes
serve-expired yes
cache-size 16384
dnsmasq-lease-file /tmp/dhcp.leases
rr-ttl-min 600
log-size 64K
log-num 1
log-level error
log-syslog yes
audit-size 64K
audit-num 1
response-mode fastest-ip
cache-persist yes
cache-file /etc/smartdns/smartdns.cache
resolv-file /tmp/resolv.conf.d/resolv.conf.auto
bind :1153@br-lan -group domestic
bind :1153@lo -group domestic
bind :1154@br-lan  -no-speed-check -no-dualstack-selection -force-aaaa-soa -group oversea
bind :1154@lo  -no-speed-check -no-dualstack-selection -force-aaaa-soa -group oversea
server-tls 223.5.5.5  -group domestic -exclude-default-group -subnet IP
server-tls 223.6.6.6  -group domestic -exclude-default-group -subnet IP
server-tls 120.53.53.53  -group domestic -exclude-default-group -subnet IP
server-tls 1.12.12.12  -group domestic -exclude-default-group -subnet IP
server-tls 223.5.5.5  -group oversea -exclude-default-group -subnet IP
server-tls 223.6.6.6  -group oversea -exclude-default-group -subnet IP
server-tls 120.53.53.53  -group oversea -exclude-default-group -subnet IP
server-tls 1.12.12.12  -group oversea -exclude-default-group -subnet IP
domain-set -name domain-block-list -file /etc/smartdns/domain-block.list
domain-rules /domain-set:domain-block-list/ -address #
conf-file /etc/smartdns/address.conf
conf-file /etc/smartdns/blacklist-ip.conf
conf-file /etc/smartdns/custom.conf

custom.conf

serve-expired-ttl 0
serve-expired-prefetch-time 5400

openssl 版本

OpenSSL 3.0.15 3 Sep 2024 (Library: OpenSSL 3.0.15 3 Sep 2024)

重现步骤
偶发性出现，较难稳定复现

信息收集

1. 将/var/log/smrtdns.log日志作为附件上传(注意去除个人相关信息)。
2. 如进程异常，请将coredump功能开启，上传coredump信息文件，同时上传配套的smartdns进程文件。
   在自定义界面，开启设置->自定义设置->生成coredump配置，重现问题后提交coredump文件
   coredump文件在/tmp目录下