Package: samba Version: 2:4.16.4+dfsg-2~bpo11+1 Severity: normal Dear Maintainer,
*** Reporter, please consider answering these questions, where appropriate *** * What led up to the situation? I upgraded my system from Buster to Bullseye. As part of that process, Samba was upgraded to 4.16.4. After the upgrade, I began receiving emails reporting a Panic or segfault in Samba everytime a user tried to access a file share after going idle. * What exactly did you do (or not do) that was effective (or ineffective)? After enabling debug logging, I saw that the panic/segfault was preceeded by the following error:L "stat of /var/lib/samba/usershare/data failed. Permission denied." In order to fix the issue, I changed the file ownership of all files in the above directory to root:sambashare and added my user (jason) to the sambashare group. After making these changes, the errors went away. I am reporting this as it's a change in behavior. I did not experience these segfaults in Buster. It appears that the expected ownership of this directory changed, causing my issue. * What was the outcome of this action? Changing the ownership to root:sambashare and adding my user to the sambashare group resolved the segfaults. * What outcome did you expect instead? -- Package-specific info: * /etc/samba/smb.conf present, and attached * /var/lib/samba/dhcp.conf present, and attached -- System Information: Debian Release: 11.5 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 5.10.0-17-amd64 (SMP w/32 CPU threads) Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to en_US.UTF-8), LANGUAGE=en_US.UTF-8 Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages samba depends on: ii adduser 3.118 ii init-system-helpers 1.60 ii libbsd0 0.11.3-1 ii libc6 2.31-13+deb11u4 ii libcups2 2.3.3op2-3+deb11u2 ii libgnutls30 3.7.1-5+deb11u2 ii libldap-2.4-2 2.4.57+dfsg-3+deb11u1 ii libldb2 2:2.5.2+samba4.16.4-2~bpo11+1 ii libpam-modules 1.4.0-9+deb11u1 ii libpam-runtime 1.4.0-9+deb11u1 ii libpopt0 1.18-2 ii libtalloc2 2.3.3-4~bpo11+1 ii libtasn1-6 4.16.0-2 ii libtdb1 1.4.6-3~bpo11+1 ii libtevent0 0.11.0-1~bpo11+1 ii lsb-base 11.1.0 ii procps 2:3.3.17-5 ii python3 3.9.2-3 ii python3-dnspython 2.0.0-1 ii python3-samba 2:4.16.4+dfsg-2~bpo11+1 ii samba-common 2:4.16.4+dfsg-2~bpo11+1 ii samba-common-bin 2:4.16.4+dfsg-2~bpo11+1 ii samba-libs 2:4.16.4+dfsg-2~bpo11+1 ii tdb-tools 1.4.3-1+b1 Versions of packages samba recommends: ii attr 1:2.4.48-6 ii logrotate 3.18.0-2+deb11u1 ii python3-markdown 3.3.4-1 ii samba-dsdb-modules 2:4.16.4+dfsg-2~bpo11+1 ii samba-vfs-modules 2:4.16.4+dfsg-2~bpo11+1 Versions of packages samba suggests: ii bind9 1:9.16.27-1~deb11u1 ii bind9-utils [bind9utils] 1:9.16.27-1~deb11u1 ii bind9utils 1:9.16.27-1~deb11u1 ii ctdb 2:4.16.4+dfsg-2~bpo11+1 pn ldb-tools <none> ii ntp 1:4.2.8p15+dfsg-1 pn smbldap-tools <none> pn ufw <none> pn winbind <none> -- Configuration Files: /etc/logrotate.d/samba changed: /var/log/samba/log.smbd { weekly missingok rotate 7 postrotate [ ! -x /usr/bin/smbcontrol ] || [ ! -f /run/samba/smbd.pid ] || /usr/bin/smbcontrol smbd reload-config endscript #compress delaycompress notifempty } /var/log/samba/log.nmbd { weekly missingok rotate 7 postrotate [ ! -x /usr/bin/smbcontrol ] || [ ! -f /run/samba/nmbd.pid ] || /usr/bin/smbcontrol nmbd reload-config endscript #compress delaycompress notifempty } /var/log/samba/log.samba { weekly missingok rotate 7 postrotate if [ -d /run/systemd/system ] && command systemctl >/dev/null 2>&1 && systemctl is-active --quiet samba-ad-dc; then systemctl kill --kill-who all --signal=SIGHUP samba-ad-dc elif [ -f /run/samba/samba.pid ]; then # This only sends to main pid, See #803924 kill -HUP `cat /run/samba/samba.pid` fi endscript #compress delaycompress notifempty } -- debconf information: samba/run_mode: daemons samba-common/title:
# # Sample configuration file for the Samba suite for Debian GNU/Linux. # # # This is the main Samba configuration file. You should read the # smb.conf(5) manual page in order to understand the options listed # here. Samba has a huge number of configurable options most of which # are not shown in this example # # Some options that are often worth tuning have been included as # commented-out examples in this file. # - When such options are commented with ";", the proposed setting # differs from the default Samba behaviour # - When commented with "#", the proposed setting is the default # behaviour of Samba but the option is considered important # enough to be mentioned here # # NOTE: Whenever you modify this file you should run the command # "testparm" to check that you have not made any basic syntactic # errors. #======================= Global Settings ======================= [global] log file = /var/log/samba/log.%m log level = 3 passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* . server role = standalone server obey pam restrictions = yes map to guest = bad user passwd program = /usr/bin/passwd %u passdb backend = tdbsam dns proxy = no unix password sync = yes workgroup = WORKGROUP # syslog = 0 panic action = /usr/share/samba/panic-action %d usershare allow guests = yes max log size = 1000 pam password change = yes server multi channel support = yes interfaces = "fd98:4179:d465:1::200;capability=RSS,speed=40000000000" ## Browsing/Identification ### # Change this to the workgroup/NT-domain name your Samba server will part of # Windows Internet Name Serving Support Section: # WINS Support - Tells the NMBD component of Samba to enable its WINS Server # wins support = no # WINS Server - Tells the NMBD components of Samba to be a WINS Client # Note: Samba can be either a WINS Server, or a WINS Client, but NOT both ; wins server = w.x.y.z # This will prevent nmbd to search for NetBIOS names through DNS. #### Networking #### # The specific set of interfaces / networks to bind to # This can be either the interface name or an IP address/netmask; # interface names are normally preferred ; interfaces = 127.0.0.0/8 eth0 # Only bind to the named interfaces and/or networks; you must use the # 'interfaces' option above to use this. # It is recommended that you enable this feature if your Samba machine is # not protected by a firewall or is a firewall itself. However, this # option cannot handle dynamic or non-broadcast interfaces correctly. ; bind interfaces only = yes #### Debugging/Accounting #### # This tells Samba to use a separate log file for each machine # that connects # Cap the size of the individual log files (in KiB). # If you want Samba to only log through syslog then set the following # parameter to 'yes'. # syslog only = no # We want Samba to log a minimum amount of information to syslog. Everything # should go to /var/log/samba/log.{smbd,nmbd} instead. If you want to log # through syslog you should set the following parameter to something higher. # Do something sensible when Samba crashes: mail the admin a backtrace ####### Authentication ####### # Server role. Defines in which mode Samba will operate. Possible # values are "standalone server", "member server", "classic primary # domain controller", "classic backup domain controller", "active # directory domain controller". # # Most people will want "standalone sever" or "member server". # Running as "active directory domain controller" will require first # running "samba-tool domain provision" to wipe databases and create a # new domain. # If you are using encrypted passwords, Samba will need to know what # password database type you are using. # This boolean parameter controls whether Samba attempts to sync the Unix # password with the SMB password when the encrypted SMB password in the # passdb is changed. # For Unix password sync to work on a Debian GNU/Linux system, the following # parameters must be set (thanks to Ian Kahan <<ka...@informatik.tu-muenchen.de> for # sending the correct chat script for the passwd program in Debian Sarge). # This boolean controls whether PAM will be used for password changes # when requested by an SMB client instead of the program listed in # 'passwd program'. The default is 'no'. # This option controls how unsuccessful authentication attempts are mapped # to anonymous connections ########## Domains ########### # # The following settings only takes effect if 'server role = primary # classic domain controller', 'server role = backup domain controller' # or 'domain logons' is set # # It specifies the location of the user's # profile directory from the client point of view) The following # required a [profiles] share to be setup on the samba server (see # below) ; logon path = \\%N\profiles\%U # Another common choice is storing the profile in the user's home directory # (this is Samba's default) # logon path = \\%N\%U\profile # The following setting only takes effect if 'domain logons' is set # It specifies the location of a user's home directory (from the client # point of view) ; logon drive = H: # logon home = \\%N\%U # The following setting only takes effect if 'domain logons' is set # It specifies the script to run during logon. The script must be stored # in the [netlogon] share # NOTE: Must be store in 'DOS' file format convention ; logon script = logon.cmd # This allows Unix users to be created on the domain controller via the SAMR # RPC pipe. The example command creates a user account with a disabled Unix # password; please adapt to your needs ; add user script = /usr/sbin/adduser --quiet --disabled-password --gecos "" %u # This allows machine accounts to be created on the domain controller via the # SAMR RPC pipe. # The following assumes a "machines" group exists on the system ; add machine script = /usr/sbin/useradd -g machines -c "%u machine account" -d /var/lib/samba -s /bin/false %u # This allows Unix groups to be created on the domain controller via the SAMR # RPC pipe. ; add group script = /usr/sbin/addgroup --force-badname %g ############ Misc ############ # Using the following line enables you to customise your configuration # on a per machine basis. The %m gets replaced with the netbios name # of the machine that is connecting ; include = /home/samba/etc/smb.conf.%m # Some defaults for winbind (make sure you're not using the ranges # for something else.) ; idmap uid = 10000-20000 ; idmap gid = 10000-20000 ; template shell = /bin/bash # Setup usershare options to enable non-root users to share folders # with the net usershare command. # Maximum number of usershare. 0 (default) means that usershare is disabled. ; usershare max shares = 100 # Allow users who've been granted usershare privileges to create # public shares, not just authenticated ones #======================= Share Definitions ======================= [homes] comment = Home Directories browseable = no # By default, the home directories are exported read-only. Change the # next parameter to 'no' if you want to be able to write to them. read only = yes # File creation mask is set to 0700 for security reasons. If you want to # create files with group=rw permissions, set next parameter to 0775. create mask = 0700 # Directory creation mask is set to 0700 for security reasons. If you want to # create dirs. with group=rw permissions, set next parameter to 0775. directory mask = 0700 # By default, \\server\username shares can be connected to by anyone # with access to the samba server. # The following parameter makes sure that only "username" can connect # to \\server\username # This might need tweaking when using external authentication schemes valid users = %S # Un-comment the following and create the netlogon directory for Domain Logons # (you need to configure Samba to act as a domain controller too.) ;[netlogon] ; comment = Network Logon Service ; path = /home/samba/netlogon ; guest ok = yes ; read only = yes # Un-comment the following and create the profiles directory to store # users profiles (see the "logon path" option above) # (you need to configure Samba to act as a domain controller too.) # The path below should be writable by all users so that their # profile directory may be created the first time they log on ;[profiles] ; comment = Users profiles ; path = /home/samba/profiles ; guest ok = no ; browseable = no ; create mask = 0600 ; directory mask = 0700 #[printers] # comment = All Printers # browseable = no # path = /var/spool/samba # printable = yes # guest ok = no # read only = yes # create mask = 0700 [Television] comment = Television path = /data/Television guest ok = yes read only = yes # optlocks = false # level2 oplocks = false [Movies] comment = Movies path = /data/Movies guest ok = yes read only = yes # optlocks = false # level2 oplocks = false [Justin-Data] comment = Justin-Data path = "/data/downloads/Justin Data" guest ok = yes read only = no [Ting-Documents] comment = Ting-Documents path = "/data/documents/Ting's Documents" guest ok = yes read only = no [Ting-Photos] comment = Ting-Photos path = "/data/photos/Ting's Photos" guest ok = yes read only = no [Ting-Downloads] comment = Ting-Downloads path = "/data/downloads/Ting's Downloads" guest ok = yes read only = no # Windows clients look for this share name as a source of downloadable # printer drivers #[print$] # comment = Printer Drivers # path = /var/lib/samba/printers # browseable = yes # read only = yes # guest ok = no # Uncomment to allow remote administration of Windows print drivers. # You may need to replace 'lpadmin' with the name of the group your # admin users are members of. # Please note that you also need to set appropriate Unix permissions # to the drivers directory for these users to have write rights in it ; write list = root, @lpadmin [IntelSSD] comment = IntelSSD path = "/mnt/intel/share" guest ok = yes read only = no [VM-Ting] writeable = yes public = yes path = /data/VMs [VM-Secret] writeable = yes valid users = jason,ting create mode = 777 path = /data/VMs write list = jason,ting directory mode = 777 [photos] writeable = yes public = yes path = /data/photos [Software] writeable = yes public = yes path = /data/Software/ #[data_VFS] # path = /data # read only = No # comment = ZFS dataset with Previous Versions enabled # shadow: snapdir = .zfs/snapshot # shadow: sort = desc # shadow: format = zrepl_%Y%m%d_%H%M%s_000 # vfs objects = shadow_copy2 #[data_documents_VFS] # path = /data/documents # read only = No # comment = ZFS dataset with Previous Versions enabled # shadow: snapdir = .zfs/snapshot # shadow: sort = desc # shadow: format = zrepl_%Y%m%d_%H%M%s_000 # vfs objects = shadow_copy2 #[data_backups_VFS] # path = /data/backups # read only = No # comment = ZFS dataset with Previous Versions enabled # shadow: snapdir = .zfs/snapshot # shadow: sort = desc # shadow: format = zrepl_%Y%m%d_%H%M%s_000 # vfs objects = shadow_copy2
dhcp.conf
Description: inode/empty