smbd crashed with SIGABRT in tevent_debug()

[corrado venturini]

I already opened a similar bug occurring on same PC, different partition.
corrado@corrado-zesty:~$ inxi -Fx
System: Host: corrado-zesty Kernel: 4.9.0-16-generic x86_64 (64 bit gcc: 6.3.0)
           Desktop: Unity 7.5.0 (Gtk 2.24.31)
           Distro: Ubuntu Zesty Zapus (development branch)
Machine: Device: desktop Mobo: Gigabyte model: H87M-D3H v: x.x
           UEFI: American Megatrends v: F3 date: 04/24/2013
CPU: Dual core Intel Core i3-4130 (-HT-MCP-) cache: 3072 KB
           flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 13567
           clock speeds: max: 3400 MHz 1: 3400 MHz 2: 3400 MHz 3: 3400 MHz
           4: 3400 MHz
Graphics: Card: Intel 4th Generation Core Processor Family Integrated Graphics Controller
           bus-ID: 00:02.0
           Display Server: X.Org 1.18.4 drivers: modesetting (unloaded: fbdev,vesa)
           Resolution: 1680x1050@59.88hz
           GLX Renderer: Mesa DRI Intel Haswell
           GLX Version: 3.0 Mesa 13.0.3 Direct Rendering: Yes
Audio: Card-1 Intel 8 Series/C220 Series High Definition Audio Controller
           driver: snd_hda_intel bus-ID: 00:1b.0
           Card-2 Intel Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller
           driver: snd_hda_intel bus-ID: 00:03.0
           Sound: Advanced Linux Sound Architecture v: k4.9.0-16-generic
Network: Card: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
           driver: r8169 v: 2.3LK-NAPI port: e000 bus-ID: 02:00.0
           IF: enp2s0 state: up speed: 100 Mbps duplex: full
           mac: 94:de:80:7e:90:a7
Drives: HDD Total Size: 1000.2GB (1.9% used)
           ID-1: /dev/sda model: ST1000DM003 size: 1000.2GB
Partition: ID-1: / size: 32G used: 9.9G (34%) fs: ext4 dev: /dev/sda8
           ID-2: swap-1 size: 8.59GB used: 0.00GB (0%) fs: swap dev: /dev/sda2
RAID: No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors: System Temperatures: cpu: 29.8C mobo: 27.8C
           Fan Speeds (in rpm): cpu: N/A
Info: Processes: 228 Uptime: 9 min Memory: 893.7/7861.4MB
           Init: systemd runlevel: 5 Gcc sys: 6.3.0
           Client: Shell (bash 4.4.51) inxi: 2.3.8
corrado@corrado-zesty:~$

ProblemType: Crash
DistroRelease: Ubuntu 17.04
Package: samba 2:4.4.5+dfsg-2ubuntu7
ProcVersionSignature: Ubuntu 4.9.0-16.17-generic 4.9.6
Uname: Linux 4.9.0-16-generic x86_64
ApportVersion: 2.20.4-0ubuntu2
Architecture: amd64
CrashCounter: 1
Date: Sun Feb 5 08:03:26 2017
ExecutablePath: /usr/sbin/smbd
InstallationDate: Installed on 2016-10-21 (106 days ago)
InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2)
ProcCmdline: /usr/sbin/smbd
RelatedPackageVersions:
 nautilus 1:3.20.3-1ubuntu4
 gvfs 1.30.3-1ubuntu1
SambaClientRegression: Yes
Signal: 6
SourcePackage: samba
StacktraceTop:
 tevent_debug () from /usr/lib/x86_64-linux-gnu/libtevent.so.0
 tevent_common_loop_timer_delay () from /usr/lib/x86_64-linux-gnu/libtevent.so.0
 run_events_poll () from /usr/lib/x86_64-linux-gnu/libsmbconf.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libsmbconf.so.0
 _tevent_loop_once () from /usr/lib/x86_64-linux-gnu/libtevent.so.0
Title: smbd crashed with SIGABRT in tevent_debug()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

[Apport retracing service (apport)]

StacktraceTop:
 tevent_debug (ev=0x399e1324f5f96dc0, level=level@entry=TEVENT_DEBUG_TRACE, fmt=fmt@entry=0x7fa0341e9a58 "Running timer event %p \"%s\"\n") at ../tevent_debug.c:89
 tevent_common_loop_timer_delay (ev=0x55b6329ca680) at ../tevent_timed.c:358
 run_events_poll () from /tmp/apport_sandbox_lRzZA9/usr/lib/x86_64-linux-gnu/libsmbconf.so.0
 s3_event_loop_once () from /tmp/apport_sandbox_lRzZA9/usr/lib/x86_64-linux-gnu/libsmbconf.so.0
 _tevent_loop_once (ev=ev@entry=0x55b6329ca680, location=location@entry=0x7fa0341e92c7 "../tevent_req.c:264") at ../tevent.c:721

[Stefan Metzmacher (metze)]

libtevent >= 0.9.30 is used without the samba patches https://bugzilla.samba.org/show_bug.cgi?id=12283
which leads to any kind of segfaults.