Ubuntu
network-manager package

latest network-manager segfaults in disco

Bug #1815742 reported by Bas Zoetekouw on 2019-02-13

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	network-manager (Ubuntu)	Fix Released	High	Unassigned

Bug Description

When I updated to the latest version of networkmanager in disco dingo (1.15.2-0ubuntu1), it started segfaulting. Reverting to the version in cosmic (1.12.4-1ubuntu1.2) solved the problem.

Syslog shows the following (will attach a more complete log):

feb 13 10:39:45 regan NetworkManager[2315]: NetworkManager:ERROR:src/settings/nm-settings-plugin.c:147:_nm_settings_plugin_emit_signal_connection_added: assertion failed: ((((__extension__ ({ GTypeInstance *__inst = (GTypeInstance*) ((sett_conn)); GType __t = ((nm_settings_connection_get_type ())); gboolean __r; if (!__inst) __r = (0); else if (__inst->g_class && __inst->g_class->g_type == __t) __r = (!(0)); else __r = g_type_check_instance_is_a (__inst, __t); __r; })))))
feb 13 10:39:45 regan NetworkManager[2315]: <info> [1550050785.3612] ifupdown: management mode: managed
feb 13 10:39:45 regan NetworkManager[2315]: invalid uninstantiatable type '(null)' in cast to 'NMSettingsConnection'
feb 13 10:39:45 regan systemd[1]: NetworkManager.service: Main process exited, code=dumped, status=6/ABRT
---
ProblemType: Bug
ApportVersion: 2.20.10-0ubuntu20
Architecture: amd64
CurrentDesktop: GNOME
DistroRelease: Ubuntu 19.04
InstallationDate: Installed on 2016-12-22 (782 days ago)
InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2)
NetworkManager.state:
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
Package: network-manager 1.12.4-1ubuntu1.2
PackageArchitecture: amd64
Tags: disco
Uname: Linux 4.19.0-1-amd64 x86_64
UpgradeStatus: Upgraded to disco on 2017-09-18 (512 days ago)
UserGroups: adm cdrom dialout dip docker libvirt lp lpadmin lxd plugdev sambashare scanner src sudo tss wireshark
_MarkForUpload: True
mtime.conffile..etc.NetworkManager.NetworkManager.conf: 2018-06-01T16:38:44.962715
nmcli-nm:
RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI WWAN-HW WWAN
running 1.12.4 connected started full enabled enabled enabled enabled enabled

See original description

Tags:

Revision history for this message

Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13:

network-manager journal output during upgrade Edit (6.1 KiB, text/plain)

tags:	added: apport-collected disco
description:	updated

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13: CRDA.txt

CRDA.txt Edit (2.9 KiB, text/plain)

apport information

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13: Dependencies.txt

Dependencies.txt Edit (5.2 KiB, text/plain)

apport information

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13: IfupdownConfig.txt

IfupdownConfig.txt Edit (182 bytes, text/plain)

apport information

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13: IpAddr.txt

IpAddr.txt Edit (3.7 KiB, text/plain)

apport information

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13: IpRoute.txt

IpRoute.txt Edit (1.3 KiB, text/plain)

apport information

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13: IwConfig.txt

IwConfig.txt Edit (831 bytes, text/plain)

apport information

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13: NetDevice.br-2c9cac607cd8.txt

NetDevice.br-2c9cac607cd8.txt Edit (418 bytes, text/plain)

apport information

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13: NetDevice.docker0.txt

NetDevice.docker0.txt Edit (385 bytes, text/plain)

apport information

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13: NetDevice.eth0.txt

#10

NetDevice.eth0.txt Edit (797 bytes, text/plain)

apport information

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13: NetDevice.lo.txt

#11

NetDevice.lo.txt Edit (251 bytes, text/plain)

apport information

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13: NetDevice.ovpn-surf.txt

#12

NetDevice.ovpn-surf.txt Edit (356 bytes, text/plain)

apport information

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13: NetDevice.tinc0.txt

#13

NetDevice.tinc0.txt Edit (355 bytes, text/plain)

apport information

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13: NetDevice.virbr0.txt

#14

NetDevice.virbr0.txt Edit (382 bytes, text/plain)

apport information

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13: NetDevice.virbr0-nic.txt

#15

NetDevice.virbr0-nic.txt Edit (377 bytes, text/plain)

apport information

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13: NetDevice.virbr1.txt

#16

NetDevice.virbr1.txt Edit (411 bytes, text/plain)

apport information

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13: NetDevice.virbr1-nic.txt

#17

NetDevice.virbr1-nic.txt Edit (406 bytes, text/plain)

apport information

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13: NetDevice.vnet0.txt

#18

NetDevice.vnet0.txt Edit (357 bytes, text/plain)

apport information

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13: NetDevice.wlan0.txt

#19

NetDevice.wlan0.txt Edit (835 bytes, text/plain)

apport information

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13: NetworkManager.conf.txt

#20

NetworkManager.conf.txt Edit (379 bytes, text/plain)

apport information

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13: PciNetwork.txt

#21

PciNetwork.txt Edit (1.1 KiB, text/plain)

apport information

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13: ProcCpuinfoMinimal.txt

#22

ProcCpuinfoMinimal.txt Edit (1.3 KiB, text/plain)

apport information

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13: ProcEnviron.txt

#23

ProcEnviron.txt Edit (330 bytes, text/plain)

apport information

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13: RfKill.txt

#24

RfKill.txt Edit (242 bytes, text/plain)

apport information

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13: WifiSyslog.txt

#25

WifiSyslog.txt Edit (9.9 MiB, text/plain)

apport information

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13: modified.conffile..etc.NetworkManager.NetworkManager.conf.txt

#26

modified.conffile..etc.NetworkManager.NetworkManager.conf.txt Edit (381 bytes, text/plain)

apport information

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13: nmcli-con.txt

#27

nmcli-con.txt Edit (2.9 KiB, text/plain)

apport information

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-13: nmcli-dev.txt

#28

nmcli-dev.txt Edit (2.3 KiB, text/plain)

apport information

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Sebastien Bacher (seb128) wrote on 2019-02-14:

#29

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please try to obtain a backtrace following the instructions at http://wiki.ubuntu.com/DebuggingProgramCrash and upload the backtrace (as an attachment) to the bug report. This will greatly help us in tracking down your problem.

Changed in network-manager (Ubuntu):
importance:	Undecided → High
status:	New → Incomplete

Revision history for this message

Sebastien Bacher (seb128) wrote on 2019-02-14:

#30

Reported upstream also on https://gitlab.freedesktop.org/NetworkManager/NetworkManager/issues/124 , they might have a clue even without the backtrace

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-14:

#31

backtrace.txt Edit (4.5 KiB, text/plain)

It took some effort getting a backtrace (apport didn't pick it up, for some reason, so I had to resort to systemd-corectl), but anyway, here is is. I'll add it to the upstream bug, too.

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Bas Zoetekouw (baszoetekouw) wrote on 2019-02-14:

#32

coredumpctl.txt Edit (3.3 KiB, text/plain)

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Sebastien Bacher (seb128) wrote on 2019-02-14:

#33

Thank you for the effort (I'm adding to my list to check why apport is not working in that context)

Sebastien Bacher (seb128) on 2019-02-14

Changed in network-manager (Ubuntu):
status:	Incomplete → Triaged

Revision history for this message

Sebastien Bacher (seb128) wrote on 2019-02-15:

#34

Upstream fixed it now in https://gitlab.freedesktop.org/NetworkManager/NetworkManager/commit/5923a30c

Changed in network-manager (Ubuntu):
status:	Triaged → Fix Committed

Revision history for this message

Launchpad Janitor (janitor) wrote on 2019-02-24:

#35

This bug was fixed in the package network-manager - 1.15.2-0ubuntu2

---------------
network-manager (1.15.2-0ubuntu2) disco; urgency=medium

  * debian/patches/git_ifupdown_segfault.patch:
    - 'settings/ifupdown: fix ifupdown plugin after merging eni_ifaces and
       connections hashes' (lp: #1815742)

-- Sebastien Bacher <email address hidden> Mon, 18 Feb 2019 17:06:17 +0100

Changed in network-manager (Ubuntu):
status:	Fix Committed → Fix Released

Revision history for this message

Bas Zoetekouw (baszoetekouw) wrote on 2019-02-26:

#36

Download full text (8.7 KiB)

Unfortunately, NetworkManager is still segfaulting at the same line (src/settings/nm-settings-plugin.c:147)

╰─▶ dpkg -l network-manager|cat
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-===============-===============-============-=========================================================
ii network-manager 1.15.2-0ubuntu2 amd64 network management framework (daemon and userspace tools)

feb 26 14:15:31 regan systemd[1]: Started Process Core Dump (PID 27019/UID 0).
feb 26 14:15:32 regan systemd-coredump[27022]: Process 26991 (NetworkManager) of user 0 dumped core.

                                               Stack trace of thread 26991:
                                               #0 0x00007f566794f077 __GI_raise (libc.so.6)
                                               #1 0x00007f5667930535 __GI_abort (libc.so.6)
                                               #2 0x00007f5667efadc3 g_assertion_message (libglib-2.0.so.0)
                                               #3 0x00007f5667f55b7a g_assertion_message_expr (libglib-2.0.so.0)
                                               #4 0x0000562133f2d6d6 _nm_settings_plugin_emit_signal_connection_added (
                                               #5 0x00007f56683e059c initialize (libnm-settings-plugin-ifupdown.so)
                                               #6 0x0000562133ec7d90 add_plugin (NetworkManager)
                                               #7 0x0000562133ecb3a5 add_plugin_load_file (NetworkManager)
                                               #8 0x0000562133d6a0b1 nm_manager_start (NetworkManager)
                                               #9 0x0000562133d2efe9 main (NetworkManager)
                                               #10 0x00007f566793209b __libc_start_main (libc.so.6)
                                               #11 0x0000562133d2f31a _start (NetworkManager)

                                               Stack trace of thread 27006:
                                               #0 0x00007f5667a22219 syscall (libc.so.6)
                                               #1 0x00007f5667f78a3a g_cond_wait_until (libglib-2.0.so.0)
                                               #2 0x00007f5667eff0c1 g_async_queue_pop_intern_unlocked (libglib-2.0.so.
                                               #3 0x00007f5667f57412 g_thread_pool_wait_for_new_task (libglib-2.0.so.0)
                                               #4 0x00007f5667f5690d g_thread_proxy (libglib-2.0.so.0)
                                               #5 0x00007f5667b00164 start_thread (libpthread.so.0)
                                               #6 0x00007f5667a28def __clone (libc.so.6)

Stack trace of thread 27003:
#0 0x00007f5667a1c6d9 __G...

Unfortunately, NetworkManager is still segfaulting at the same line (src/settings/nm-settings-plugin.c:147)

╰─▶ dpkg -l network-manager|cat
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name            Version         Architecture Description
+++-===============-===============-============-=========================================================
ii  network-manager 1.15.2-0ubuntu2 amd64        network management framework (daemon and userspace tools)

feb 26 14:15:31 regan systemd[1]: Started Process Core Dump (PID 27019/UID 0).
feb 26 14:15:32 regan systemd-coredump[27022]: Process 26991 (NetworkManager) of user 0 dumped core.
                                               
                                               Stack trace of thread 26991:
                                               #0  0x00007f566794f077 __GI_raise (libc.so.6)
                                               #1  0x00007f5667930535 __GI_abort (libc.so.6)
                                               #2  0x00007f5667efadc3 g_assertion_message (libglib-2.0.so.0)
                                               #3  0x00007f5667f55b7a g_assertion_message_expr (libglib-2.0.so.0)
                                               #4  0x0000562133f2d6d6 _nm_settings_plugin_emit_signal_connection_added (
                                               #5  0x00007f56683e059c initialize (libnm-settings-plugin-ifupdown.so)
                                               #6  0x0000562133ec7d90 add_plugin (NetworkManager)
                                               #7  0x0000562133ecb3a5 add_plugin_load_file (NetworkManager)
                                               #8  0x0000562133d6a0b1 nm_manager_start (NetworkManager)
                                               #9  0x0000562133d2efe9 main (NetworkManager)
                                               #10 0x00007f566793209b __libc_start_main (libc.so.6)
                                               #11 0x0000562133d2f31a _start (NetworkManager)
                                               
                                               Stack trace of thread 27006:
                                               #0  0x00007f5667a22219 syscall (libc.so.6)
                                               #1  0x00007f5667f78a3a g_cond_wait_until (libglib-2.0.so.0)
                                               #2  0x00007f5667eff0c1 g_async_queue_pop_intern_unlocked (libglib-2.0.so.
                                               #3  0x00007f5667f57412 g_thread_pool_wait_for_new_task (libglib-2.0.so.0)
                                               #4  0x00007f5667f5690d g_thread_proxy (libglib-2.0.so.0)
                                               #5  0x00007f5667b00164 start_thread (libpthread.so.0)
                                               #6  0x00007f5667a28def __clone (libc.so.6)
                                               
                                               Stack trace of thread 27003:
                                               #0  0x00007f5667a1c6d9 __GI___poll (libc.so.6)
                                               #1  0x00007f5667f2dc76 g_main_context_poll (libglib-2.0.so.0)
                                               #2  0x00007f5667f2dd9c g_main_context_iteration (libglib-2.0.so.0)
                                               #3  0x00007f5667f2dde1 glib_worker_main (libglib-2.0.so.0)
                                               #4  0x00007f5667f5690d g_thread_proxy (libglib-2.0.so.0)
                                               #5  0x00007f5667b00164 start_thread (libpthread.so.0)
                                               #6  0x00007f5667a28def __clone (libc.so.6)
                                               
                                               Stack trace of thread 27010:
                                               #0  0x00007f5667a22219 syscall (libc.so.6)
                                               #1  0x00007f5667f78a3a g_cond_wait_until (libglib-2.0.so.0)
                                               #2  0x00007f5667eff0c1 g_async_queue_pop_intern_unlocked (libglib-2.0.so.
                                               #3  0x00007f5667f57412 g_thread_pool_wait_for_new_task (libglib-2.0.so.0)
                                               #4  0x00007f5667f5690d g_thread_proxy (libglib-2.0.so.0)
                                               #5  0x00007f5667b00164 start_thread (libpthread.so.0)
                                               #6  0x00007f5667a28def __clone (libc.so.6)
                                               
                                               Stack trace of thread 27007:
                                               #0  0x00007f5667a1c6d9 __GI___poll (libc.so.6)
                                               #1  0x00007f5667f2dc76 g_main_context_poll (libglib-2.0.so.0)
                                               #2  0x00007f5667f2e002 g_main_loop_run (libglib-2.0.so.0)
                                               #3  0x00007f566816f9a6 gdbus_shared_thread_func (libgio-2.0.so.0)
                                               #4  0x00007f5667f5690d g_thread_proxy (libglib-2.0.so.0)
                                               #5  0x00007f5667b00164 start_thread (libpthread.so.0)
                                               #6  0x00007f5667a28def __clone (libc.so.6)
feb 26 14:15:32 regan systemd[1]: systemd-coredump@10-27019-0.service: Succeeded.

╰─▶ gdb =NetworkManager core.NetworkManager.0.e442861c9aff49ceb10624333ae787d1.26991.1551186931000000 
GNU gdb (Ubuntu 8.2.50.20190214-0ubuntu1) 8.2.50.20190214-git
Copyright (C) 2019 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
    <http://www.gnu.org/software/gdb/documentation/>.

For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/sbin/NetworkManager...
Reading symbols from /usr/lib/debug/.build-id/ed/ab89985cc587cb5438c633398dadff8b8a058d.debug...
[New LWP 26991]
[New LWP 27006]
[New LWP 27003]
[New LWP 27010]
[New LWP 27007]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/sbin/NetworkManager --no-daemon'.
Program terminated with signal SIGABRT, Aborted.
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
50	../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
[Current thread is 1 (Thread 0x7f566634abc0 (LWP 26991))]
(gdb) bt
#0  0x00007f566794f077 in __GI_raise6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1  0x00007f5667930535 in __GI_abort () at abort.c:79
#2  0x00007f5667efadc3 in g_assertion_message (domai
   0x562133fc5e80 <__func__.31788> "_nm_settings_plugin_emit_signal_connection_added", message=<optimized out>) at ../../../glib/gt
   estutils.c:2878
#3  0x00007f5667f55b7a in g_assertion_message_expr0x562133f53e9
   0x562133fc5d00 "(((__extension__ ({ GTypeInstance *__inst = (GTypeInstance*) ((sett_conn)); GType __t = ((nm_settings_connection_get_type ())); gboolean __r; if (!__inst) __r = (0); else if (__inst->g_class && __inst"...) at ../../../glib/gtestutils.c:2904
#4  0x0000562133f2d6d6 in _nm_settings_plugin_emit_signal_connection_added0x562135c11d00 [SettingsPluginIfupdow
   0x562135bc32a0) at src/settings/nm-se
   ttings-plugin.c:147
#5  0x00007f56683e059c in initialize (plugin=<optimized out>) at src/settings/plugins/ifupdown/nms-ifupdown-p
   lugin.c:286
#6  0x0000562133ec7d90 in add_plugin0x562135bd8b30 [NMSettings], plugin
   0x562135bdd2a0 "/usr/lib/x86_64-linux-gnu/NetworkManager/1.15.2/libnm-settings-plugin-ifupdown.so") at src/settings/nm-settings.c:609
#7  0x0000562133ecb3a5 in add_plugin_load_file0x7ffc2d710a98, pname=<opt
   0x562135bd8b30 [NMSettings]) at src/settings/nm-settings.c:686
#8  0x0000562133ecb3a5 in load_plugins0x562135c0b9d0, 
   0x562135bd8b30 [NMSettings]) a
   t src/settings/nm-settings.c:755
#9  0x0000562133ecb3a5 in nm_settings_start0x562135bd8b30 [NMSettings], error=erro
   0x7ffc2d710a98) at src/settings/
   nm-settings.c:1799
#10 0x0000562133d6a0b1 in nm_manager_start0x7ffc2
   d710a98) at src/nm-manager.c:6675
#11 0x0000562133d2efe9 in main (argc=<optimized out>, argv
   =<optimized out>) at src/ma
   in.c:423
(gdb)

Revision history for this message

Bas Zoetekouw (baszoetekouw) wrote on 2019-03-05:

#37

reopened

Changed in network-manager (Ubuntu):
status:	Fix Released → Confirmed

Revision history for this message

Till Kamppeter (till-kamppeter) wrote on 2019-03-06:

#38

Sebastien Bacher (seb128) has already informed upstream on

https://gitlab.freedesktop.org/NetworkManager/NetworkManager/issues/124#note_126100

and following comments.

Till Kamppeter (till-kamppeter) on 2019-03-07

Changed in network-manager (Ubuntu):
assignee:	nobody → Till Kamppeter (till-kamppeter)

Revision history for this message

Sebastien Bacher (seb128) wrote on 2019-03-15:

#39

Do you still get the issue with the .91 update?
Upstream would like to get 'the /etc/network/interfaces file (and interfaces.d directory, if applicable)', can you get those if you still have the issue?

Changed in network-manager (Ubuntu):
assignee:	Till Kamppeter (till-kamppeter) → nobody
status:	Confirmed → Incomplete

Revision history for this message

Bas Zoetekouw (baszoetekouw) wrote on 2019-03-18:

#40

The problem still occurs with the .91 version from disco-proposed.
I'll attach the requested files to the upstream report.

Revision history for this message

Sebastien Bacher (seb128) wrote on 2019-03-18:

#41

Thanks!

Changed in network-manager (Ubuntu):
status:	Incomplete → Triaged

Revision history for this message

Launchpad Janitor (janitor) wrote on 2019-04-03:

#42

This bug was fixed in the package network-manager - 1.16.0-0ubuntu2

---------------
network-manager (1.16.0-0ubuntu2) disco; urgency=medium

  * debian/patches/git_ifupdown_iterator.patch:
    - ifupdown: fix connection iterator, should fix a segfault in the
      corresponding plugin (lp: #1815742)

-- Sebastien Bacher <email address hidden> Tue, 02 Apr 2019 17:53:26 +0200

Changed in network-manager (Ubuntu):
status:	Triaged → Fix Released

Revision history for this message

Sebastien Bacher (seb128) wrote on 2019-04-03:

#43

I've backported the patch upstream recommended, it would be nice if you could give it a try to see if it really resolves your issue

Revision history for this message

Bas Zoetekouw (baszoetekouw) wrote on 2019-04-03:

#44

Yes, this version works perfectly. Thanks!

Revision history for this message

Sebastien Bacher (seb128) wrote on 2019-04-03:

#45

Great, thanks for testing!

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