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重启rpcbind服务导致/proc/net/unix socket句柄泄露
已完成
#I59RN0
缺陷
peulerosci
创建于
2022-05-29 12:28
<h3>优先级:</h3>次要 <h3>详细描述:</h3> 【OS版本】 compiletime=2021-11-28-02-05-44 kernelversion=3.10.0-862.14.1.5.h648 release 2.0 (SP5) 【测试类型】 4) 【缺陷年龄】 历史存在 【测试步骤】 执行压力测试脚本: [root@localhost ~]# cat rpc.sh #!/bin/bash while true do systemctl stop rpcbind.service systemctl stop rpc-statd.service systemctl stop nfs-server.service systemctl restart rpcbind.service systemctl restart rpc-statd.service systemctl restart nfs-server.service done 【结果输出】 [root@localhost ~]# cat /proc/net/unix | wc -l 查询到的句柄一直在增长,但是lsof查询不到 ll /proc/*/fd也查询不到对应的inode 【预期输出】 cat /proc/net/unix | wc -l 查询到的句柄不会增长 【ISO/TAR(安全必填,其他选填)】 【定位人】 强小军/王海(hulk)<h3>原因分析:</h3> 【是否新引入rpm包,是否进行了安全编译选项扫描】 否 【定位分析】(有效问题请“先对原有功能进行描述,重点描述与当前故障现象相关的技术点、以及缺陷出现的触发条件、错误出现的函数等”;非问题“需要澄清技术细节,描述技术实现原理以及当前现象合理性的解释”;重复问题请“说明重复问题单号”) 触发场景:不断重启rpcbind、rpc-statd、nfs-server服务; 在启动nfs-server服务的过程中, rpc.nfsd 程序会向/proc/fs/nfsd/portlist 文件写入nfs服务监听端口号(默认tcp 2049), 该操作会调用sunrpc接口向rpcbind进行注册, 注册是通过unix socket (/var/run/rpcbind/rpcbind.sock) 完成的, 由于反复不断的重启服务,在unix socket连接过程中存在一定概率的连接失败, 而连接失败时sunrpc并未释放socket资源,导致句柄泄露. 问题现象:/proc/net/unix中查到大量的无效socket,lsof 命令查询不到对应的inode nfs启动时如下路径如果异常失败,socket资源没有释放:write_ports nfsd_create_serv svc_bindsvc_rpcb_setuprpcb_create_localrpcb_create_local_unixrpc_createxprt_create_transportxs_setup_localxs_local_setup_socket__sock_createxs_local_finish_connecting // 失败返回,但是没有释放socket 同步hulk 补丁: 分析: 【对外部(配置、头文件、外部函数)是否有影响】 否
<h3>优先级:</h3>次要 <h3>详细描述:</h3> 【OS版本】 compiletime=2021-11-28-02-05-44 kernelversion=3.10.0-862.14.1.5.h648 release 2.0 (SP5) 【测试类型】 4) 【缺陷年龄】 历史存在 【测试步骤】 执行压力测试脚本: [root@localhost ~]# cat rpc.sh #!/bin/bash while true do systemctl stop rpcbind.service systemctl stop rpc-statd.service systemctl stop nfs-server.service systemctl restart rpcbind.service systemctl restart rpc-statd.service systemctl restart nfs-server.service done 【结果输出】 [root@localhost ~]# cat /proc/net/unix | wc -l 查询到的句柄一直在增长,但是lsof查询不到 ll /proc/*/fd也查询不到对应的inode 【预期输出】 cat /proc/net/unix | wc -l 查询到的句柄不会增长 【ISO/TAR(安全必填,其他选填)】 【定位人】 强小军/王海(hulk)<h3>原因分析:</h3> 【是否新引入rpm包,是否进行了安全编译选项扫描】 否 【定位分析】(有效问题请“先对原有功能进行描述,重点描述与当前故障现象相关的技术点、以及缺陷出现的触发条件、错误出现的函数等”;非问题“需要澄清技术细节,描述技术实现原理以及当前现象合理性的解释”;重复问题请“说明重复问题单号”) 触发场景:不断重启rpcbind、rpc-statd、nfs-server服务; 在启动nfs-server服务的过程中, rpc.nfsd 程序会向/proc/fs/nfsd/portlist 文件写入nfs服务监听端口号(默认tcp 2049), 该操作会调用sunrpc接口向rpcbind进行注册, 注册是通过unix socket (/var/run/rpcbind/rpcbind.sock) 完成的, 由于反复不断的重启服务,在unix socket连接过程中存在一定概率的连接失败, 而连接失败时sunrpc并未释放socket资源,导致句柄泄露. 问题现象:/proc/net/unix中查到大量的无效socket,lsof 命令查询不到对应的inode nfs启动时如下路径如果异常失败,socket资源没有释放:write_ports nfsd_create_serv svc_bindsvc_rpcb_setuprpcb_create_localrpcb_create_local_unixrpc_createxprt_create_transportxs_setup_localxs_local_setup_socket__sock_createxs_local_finish_connecting // 失败返回,但是没有释放socket 同步hulk 补丁: 分析: 【对外部(配置、头文件、外部函数)是否有影响】 否
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openEuler-22.03-LTS-SP4-update-20241108
openEuler-22.03-LTS-SP3-update-20241108
openEuler-22.03-LTS-SP1-update-20241108
openEuler-20.03-LTS-SP4-update-20241108
openEuler-22.03-LTS-SP4-update-before-20241025
openEuler-22.03-LTS-SP4-before-20241025
openEuler-24.03-LTS-update-before-20241025
openEuler-20.03-LTS-SP4-update-20241101
openEuler-22.03-LTS-SP1-update-20241101
openEuler-22.03-LTS-SP3-update-20241101
openEuler-22.03-LTS-SP4-update-20241101
openEuler-24.03-LTS-update-20241101
openEuler-20.03-LTS-SP4-update-20241025
openEuler-22.03-LTS-SP1-update-20241025
openEuler-22.03-LTS-SP3-update-20241025
openEuler-22.03-LTS-SP4-update-20241025
openEuler-24.03-LTS-update-20241025
openEuler-22.03-LTS-SP4-release
openEuler-24.09-release
openEuler-24.03-LTS-release
openEuler-22.03-LTS-SP3-release
openEuler-23.09-rc5
openEuler-22.03-LTS-SP1-release
openEuler-22.09-release
openEuler-22.09-rc5
openEuler-22.09-20220829
openEuler-22.03-LTS-20220331
openEuler-22.03-LTS-round5
openEuler-22.03-LTS-round3
openEuler-22.03-LTS-round2
openEuler-22.03-LTS-round1
openEuler-20.03-LTS-SP3-release
openEuler-20.03-LTS-SP2-20210624
openEuler-21.03-20210330
openEuler-20.09-20200929
openEuler-20.03-LTS-20200606
openEuler-20.03-LTS-tag
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https://gitee.com/src-openeuler/kernel.git
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kernel
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