WLAN crashes every Minute or so.... In Between it works! On a Lenovo YOGA 13.NetworkManager crashed with SIGSEGV in nm_device_uses_assumed_connection

[Ulrich Czopak]

WLAN reconnects all the time, in between it works.

ProblemType: Crash
DistroRelease: Ubuntu 15.10
Package: network-manager 1.0.4-0ubuntu4
ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
Uname: Linux 4.2.0-16-generic x86_64
ApportVersion: 2.19.1-0ubuntu2
Architecture: amd64
CrashCounter: 1
Date: Sat Oct 17 09:01:29 2015
ExecutablePath: /usr/sbin/NetworkManager
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2015-10-11 (5 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150924)
IpRoute:
 default via 192.168.0.1 dev enx0023559c5769 proto static metric 100
 169.254.0.0/16 dev enx0023559c5769 scope link metric 1000
 192.168.0.0/24 dev enx0023559c5769 proto kernel scope link src 192.168.0.12 metric 100
IwConfig:
 enx0023559c5769 no wireless extensions.

 lo no wireless extensions.
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
 WimaxEnabled=true
PciNetwork:

ProcCmdline: /usr/sbin/NetworkManager --no-daemon
ProcEnviron:
 LANG=de_AT.UTF-8
 LANGUAGE=de_AT:de
 PATH=(custom, no user)
SegvAnalysis:
 Segfault happened at: 0x44cc09 <nm_device_uses_assumed_connection+25>: cmpq $0x0,0x108(%rbx)
 PC (0x0044cc09) ok
 source "$0x0" ok
 destination "0x108(%rbx)" (0x00000108) not located in a known VMA region (needed writable region)!
SegvReason: writing NULL VMA
Signal: 11
SourcePackage: network-manager
StacktraceTop:
 nm_device_uses_assumed_connection ()
 ?? ()
 ?? () from /usr/lib/x86_64-linux-gnu/NetworkManager/libnm-device-plugin-wifi.so
 ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
Title: NetworkManager crashed with SIGSEGV in nm_device_uses_assumed_connection()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

nmcli-dev:
 DEVICE TYPE STATE DBUS-PATH CONNECTION CON-UUID CON-PATH
 enx0023559c5769 ethernet connected /org/freedesktop/NetworkManager/Devices/2 enx0023559c5769 85d610ef-34d9-404a-b0c1-387374da76f6 /org/freedesktop/NetworkManager/ActiveConnection/0
 wlx20689d541c88 wifi disconnected /org/freedesktop/NetworkManager/Devices/4 -- -- --
 lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/0 -- -- --
nmcli-nm: Error: command ['nmcli', '-f', 'all', 'nm'] failed with exit code 2: Error: Object 'nm' is unknown, try 'nmcli help'.

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #1498725, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.