解决Samba服务无法访问网络名不再可用的问题

港控/mmm° 2023-06-06 07:53 3阅读 0赞

# 问题描述 #

新建虚拟机，安装ubuntukylin-14.04.2-desktop-amd64系统

配置IP地址为：192.168.0.205

然后apt-get安装samba，编辑 /etc/samba/smb.conf

\[KylinShare\]  
path=/opt/Share  
available = yes  
read only = no  
valid users = root, sean  
browsable = yes  
public = yes  
writable = yes

smbpasswd -a root 添加用户，service smbd restart 重启samba服务

在Win10上打开资源管理器，在地址栏输入：\\\\192.168.0.205，可以看到KylinShare文件夹，

**但是双击访问KylinShare时却提示没有权限访问或者指定的网络名不再可用**。

# 解决过程 #

首先怀疑是防火墙的问题，卸载iptables，不行

百度了一下，有说是SELinux的问题，确保SELinux状态是disabled，还是不行

chmod 777 /opt/Share设置目录权限，照样不行

netstat -ntlp 看了下端口号，139和445都在，确定通信是没有问题的

还有说smb.conf配置有问题的，可是同样的配置在Ubuntu14.04上完全正常，见了鬼了

百度来百度去，翻来覆去就是以上几条原因，各种尝试折腾了半天，始终不行。

最后通过查看 /var/log/samba/下的日志文件发现以下内容

\[2019/10/10 03:51:11.787782,  0\] ../source3/lib/popt\_common.c:68(popt\_s3\_talloc\_log\_fn)  
  talloc: access after free error - first free may be at ../source3/smbd/open.c:4026  
\[2019/10/10 03:51:11.787821,  0\] ../source3/lib/popt\_common.c:68(popt\_s3\_talloc\_log\_fn)  
  Bad talloc magic value - access after free  
\[2019/10/10 03:51:11.787827,  0\] ../source3/lib/util.c:789(smb\_panic\_s3)  
  PANIC (pid 3206): Bad talloc magic value - access after free  
\[2019/10/10 03:51:11.799969,  0\] ../source3/lib/util.c:900(log\_stack\_trace)  
  BACKTRACE: 34 stack frames:  
   \#0 /usr/lib/x86\_64-linux-gnu/samba/libsmbregistry.so.0(log\_stack\_trace+0x1a) \[0x7f3f251431da\]  
   \#1 /usr/lib/x86\_64-linux-gnu/samba/libsmbregistry.so.0(smb\_panic\_s3+0x20) \[0x7f3f251432b0\]  
   \#2 /usr/lib/x86\_64-linux-gnu/libsamba-util.so.0(smb\_panic+0x2f) \[0x7f3f25eba8df\]  
   \#3 /usr/lib/x86\_64-linux-gnu/libtalloc.so.2(+0x1b5f) \[0x7f3f22c41b5f\]  
   \#4 /usr/lib/x86\_64-linux-gnu/libtalloc.so.2(\_talloc\_steal\_loc+0xab) \[0x7f3f22c4877b\]  
   \#5 /usr/lib/x86\_64-linux-gnu/libtalloc.so.2(\_talloc\_move+0x13) \[0x7f3f22c487b3\]  
   \#6 /usr/lib/x86\_64-linux-gnu/samba/libsmbd-base.so.0(+0x18b408) \[0x7f3f25afc408\]  
   \#7 /usr/lib/x86\_64-linux-gnu/samba/libsmbd-base.so.0(+0x18b811) \[0x7f3f25afc811\]  
   \#8 /usr/lib/x86\_64-linux-gnu/samba/libdbwrap.so.0(+0x51ed) \[0x7f3f201071ed\]  
   \#9 /usr/lib/x86\_64-linux-gnu/libtdb.so.1(+0x8745) \[0x7f3f1ceb4745\]  
   \#10 /usr/lib/x86\_64-linux-gnu/libtdb.so.1(tdb\_parse\_record+0x6c) \[0x7f3f1ceafedc\]  
   \#11 /usr/lib/x86\_64-linux-gnu/samba/libdbwrap.so.0(+0x5559) \[0x7f3f20107559\]  
   \#12 /usr/lib/x86\_64-linux-gnu/samba/libdbwrap.so.0(dbwrap\_parse\_record+0x1b) \[0x7f3f20104dbb\]  
   \#13 /usr/lib/x86\_64-linux-gnu/samba/libsmbd-base.so.0(fetch\_share\_mode\_unlocked+0x54) \[0x7f3f25afd484\]  
   \#14 /usr/lib/x86\_64-linux-gnu/samba/libsmbd-base.so.0(get\_file\_infos+0x60) \[0x7f3f25af6450\]  
   \#15 /usr/lib/x86\_64-linux-gnu/samba/libsmbd-base.so.0(smbd\_dirptr\_get\_entry+0x738) \[0x7f3f25a1f188\]  
   \#16 /usr/lib/x86\_64-linux-gnu/samba/libsmbd-base.so.0(smbd\_dirptr\_lanman2\_entry+0x1c5) \[0x7f3f25a53095\]  
   \#17 /usr/lib/x86\_64-linux-gnu/samba/libsmbd-base.so.0(+0x140fc0) \[0x7f3f25ab1fc0\]  
   \#18 /usr/lib/x86\_64-linux-gnu/samba/libsmbd-base.so.0(smbd\_smb2\_request\_process\_query\_directory+0x2e4) \[0x7f3f25ab2634\]  
   \#19 /usr/lib/x86\_64-linux-gnu/samba/libsmbd-base.so.0(smbd\_smb2\_request\_dispatch+0xcad) \[0x7f3f25a9fe8d\]  
   \#20 /usr/lib/x86\_64-linux-gnu/samba/libsmbd-base.so.0(+0x12fab2) \[0x7f3f25aa0ab2\]  
   \#21 /usr/lib/x86\_64-linux-gnu/libsmbconf.so.0(run\_events\_poll+0x16c) \[0x7f3f23ddb95c\]  
   \#22 /usr/lib/x86\_64-linux-gnu/libsmbconf.so.0(+0x25bb0) \[0x7f3f23ddbbb0\]  
   \#23 /usr/lib/x86\_64-linux-gnu/libtevent.so.0(\_tevent\_loop\_once+0x8d) \[0x7f3f22a34d5d\]  
   \#24 /usr/lib/x86\_64-linux-gnu/libtevent.so.0(tevent\_common\_loop\_wait+0x1b) \[0x7f3f22a34efb\]  
   \#25 /usr/lib/x86\_64-linux-gnu/samba/libsmbd-base.so.0(smbd\_process+0x6c9) \[0x7f3f25a8f1f9\]  
   \#26 smbd(+0x96b6) \[0x7f3f265546b6\]  
   \#27 /usr/lib/x86\_64-linux-gnu/libsmbconf.so.0(run\_events\_poll+0x16c) \[0x7f3f23ddb95c\]  
   \#28 /usr/lib/x86\_64-linux-gnu/libsmbconf.so.0(+0x25bb0) \[0x7f3f23ddbbb0\]  
   \#29 /usr/lib/x86\_64-linux-gnu/libtevent.so.0(\_tevent\_loop\_once+0x8d) \[0x7f3f22a34d5d\]  
   \#30 /usr/lib/x86\_64-linux-gnu/libtevent.so.0(tevent\_common\_loop\_wait+0x1b) \[0x7f3f22a34efb\]  
   \#31 smbd(main+0x15b4) \[0x7f3f265526c4\]  
   \#32 /lib/x86\_64-linux-gnu/libc.so.6(\_\_libc\_start\_main+0xf5) \[0x7f3f2268cec5\]  
   \#33 smbd(+0x7a96) \[0x7f3f26552a96\]

原来是talloc问题，又百度一通，发现可以通过下面的操作解决

$ sudo apt-get remove samba libtalloc2
    $ sudo apt-get autoremove
    $ sudo apt-get install samba libtalloc2

重新配置samba服务，终于可以访问KylinShare目录了，整个世界清静了