Package: samba Version: 2:4.13.13+dfsg-1~deb11u2 Severity: critical Tags: newcomer Justification: breaks the whole system X-Debbugs-Cc: p...@jbechtel.de
Dear Maintainers, recently I updated something of my system (not pure debian, using sysvinit) and it wouldn't start up. It turned out to be a "Heisenbug": when I looked for the reason, the system did boot properly. I then found out that pressing a key (left ctrl, hold down for > 0.5 s or press in combination with other keys) made the boot successful and that the nmbd startup hangs at getrandom() syscall before daemonizing. (first call: getrandom(*, 1, GRAND_NONBLICK), second call: getrandom(*, 64, 0)) After short research I found that enabling haveged could help - see https://bbs.archlinux.org/viewtopic.php?id=249430 , last post. It actually did, but I needed to make sure that update-rc.d tool sorted nmbd /after/ haveged. This could be achieved by adding "haveged" (no $dollar sign) to the list of "Required-Start:" So I don't need anything from you, just wanted to give you a hint what could be improved: one of these possibilities would help: * add haveged to the requirements of init.d script (and to the package requirements if systemd is not active.) * removing need for getrandom syscall /before/ daemonizing (affecting samba codebase) Best Regards Jonas (Bechtel) P.S.: I did not check out the testing version as this requires another libc. I don't want to touch my libc because in the past I have burnt lots of time resolving dependencies then. Updating libc requires another gcc and via some relation perl and python want to be updated. Via pythonqt this affects qt and kde, so somehow I would end up reinstalling/updating most packages of the system. (Which is ironic because libc takes measures to be actually fully backward compatible) -- Package-specific info: * /etc/samba/smb.conf present, and attached * /var/lib/samba/dhcp.conf present, and attached -- System Information: Debian Release: 10.7 APT prefers oldstable-updates APT policy: (500, 'oldstable-updates'), (500, 'stable'), (500, 'oldstable'), (200, 'testing') Architecture: i386 (x86_64) Foreign Architectures: amd64 Kernel: Linux 4.19.0-6-amd64 (SMP w/4 CPU threads) Kernel taint flags: TAINT_FORCED_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE not set Shell: /bin/sh linked to /usr/bin/dash Init: sysvinit (via /sbin/init) LSM: AppArmor: enabled Versions of packages samba depends on: ii adduser 3.118 ii dpkg 1.20.9 ii init-system-helpers 1.56+nmu1 ii libbsd0 0.9.1-2 ii libc6 2.31-13+deb11u2 ii libgnutls30 3.7.1-5 ii libldb2 2:2.2.3-2~deb11u1 ii libpam-modules 1.3.1-5 ii libpam-runtime 1.3.1-5 ii libpopt0 1.16-12 ii libpython3.9 3.9.2-1 ii libtalloc2 2.3.1-2+b1 ii libtasn1-6 4.16.0-2 ii libtdb1 1.4.3-1+b1 ii libtevent0 0.10.2-1 ii libwbclient0 2:4.13.13+dfsg-1~deb11u2 ii lsb-base 11.1.0 ii procps 2:3.3.15-2 ii python3 3.9.2-3 ii python3-dnspython 2.0.0-1 ii python3-samba 2:4.13.13+dfsg-1~deb11u2 ii samba-common 2:4.13.13+dfsg-1~deb11u2 ii samba-common-bin 2:4.13.13+dfsg-1~deb11u2 ii samba-libs 2:4.13.13+dfsg-1~deb11u2 ii tdb-tools 1.3.16-2+b1 Versions of packages samba recommends: pn attr <none> ii logrotate 3.14.0-4 pn python3-markdown <none> pn samba-dsdb-modules <none> pn samba-vfs-modules <none> Versions of packages samba suggests: pn bind9 <none> pn bind9utils <none> pn ctdb <none> pn ldb-tools <none> ii ntp 1:4.2.8p12+dfsg-4 pn smbldap-tools <none> ii ufw 0.36-1 pn winbind <none> -- Configuration Files: /etc/init.d/nmbd changed: PIDDIR=/run/samba NMBDPID=$PIDDIR/nmbd.pid unset TMPDIR test -x /usr/sbin/nmbd || exit 0 . /lib/lsb/init-functions exec 9>/home/myaccount/BOOT.nmbd (echo -n A; date; echo) >&9 case $1 in start) (echo -n B; date; echo) >&9 SERVER_ROLE=`samba-tool testparm --parameter-name="server role" 2>/dev/null | tail -1` (echo -n C; date; echo) >&9 if [ "$SERVER_ROLE" = "active directory domain controller" ]; then exit 0 fi (echo -n D; date; echo) >&9 if [ -n `which testparm` ] then (echo -n E; date; echo) >&9 NMBD_DISABLED=`testparm -s --parameter-name='disable netbios' 2>/dev/null` fi (echo -n F; date; echo) >&9 if [ "$NMBD_DISABLED" != Yes ]; then log_daemon_msg "Starting NetBIOS name server" nmbd # Make sure we have our PIDDIR, even if it's on a tmpfs (echo -n G; date; echo) >&9 install -o root -g root -m 755 -d $PIDDIR file=/sys/devices/virtual/misc/hw_random/rng_current echo -n "$file: "; cat $file (echo -n H; date; echo) >&9 if ! start-stop-daemon.wrapper --start --quiet --oknodo --exec /usr/sbin/nmbd --pidfile $NMBDPID -- -D then (echo -n I; date; echo) >&9 log_end_msg 1 exit 1 fi (echo -n J; date; echo) >&9 log_end_msg 0 fi (echo -n K; date; echo) >&9 ;; stop) log_daemon_msg "Stopping NetBIOS name server" nmbd start-stop-daemon --stop --quiet --pidfile $NMBDPID # Wait a little and remove stale PID file sleep 1 if [ -f $NMBDPID ] && ! ps h `cat $NMBDPID` > /dev/null then # Stale PID file (nmbd was succesfully stopped), # remove it (should be removed by nmbd itself IMHO.) rm -f $NMBDPID fi log_end_msg 0 ;; restart|force-reload) $0 stop sleep 1 $0 start ;; status) status_of_proc -p $NMBDPID /usr/sbin/nmbd nmbd exit $? ;; *) echo "Usage: /etc/init.d/nmbd {start|stop|restart|force-reload|status}" exit 1 ;; esac exit 0 -- no debconf information
# This file [smb.conf] is empty but it must exist to trigger the bug
dhcp.conf
Description: inode/empty
