wpa_supplicant crashed with SIGSEGV in dbus_connection_dispatch()

[Martin Pitt]

This happens when running the NetworkManager autopkgtests

ProblemType: Crash
DistroRelease: Ubuntu 15.10
Package: wpasupplicant 2.4-0ubuntu2
ProcVersionSignature: Ubuntu 4.2.0-7.7-generic 4.2.0
Uname: Linux 4.2.0-7-generic x86_64
ApportVersion: 2.18-0ubuntu9
Architecture: amd64
Date: Fri Sep 4 09:00:38 2015
ExecutablePath: /sbin/wpa_supplicant
ExecutableTimestamp: 1439920046
ProcCmdline: /sbin/wpa_supplicant -u -s -O /run/wpa_supplicant
ProcCwd: /
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, no user)
SegvAnalysis:
 Segfault happened at: 0x7f66fb181cc6 <__strcmp_sse2+22>: movlpd (%rdi),%xmm1
 PC (0x7f66fb181cc6) ok
 source "(%rdi)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%xmm1" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: wpa
StacktraceTop:
 ?? ()
 ?? ()
 ?? () from /lib/x86_64-linux-gnu/libdbus-1.so.3
 dbus_connection_dispatch () from /lib/x86_64-linux-gnu/libdbus-1.so.3
 ?? ()
Title: wpa_supplicant crashed with SIGSEGV in dbus_connection_dispatch()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

[Apport retracing service (apport)]

StacktraceTop:
 ?? ()
 ?? ()
 ?? () from /tmp/apport_sandbox_3HEGxn/lib/x86_64-linux-gnu/libdbus-1.so.3
 dbus_connection_dispatch () from /tmp/apport_sandbox_3HEGxn/lib/x86_64-linux-gnu/libdbus-1.so.3
 ?? ()

[Apport retracing service (apport)]

Thank you for your report!

However, processing it in order to get sufficient information for the
developers failed (it does not generate a useful symbolic stack trace). This
might be caused by some outdated packages which were installed on your system
at the time of the report:

no debug symbol package found for libdbus-1-3
no debug symbol package found for libgpg-error0
no debug symbol package found for liblzma5
no debug symbol package found for libnl-genl-3-200
no debug symbol package found for wpasupplicant

Please upgrade your system to the latest package versions. If you still
encounter the crash, please file a new report.

Thank you for your understanding, and sorry for the inconvenience!

[Nazar Mokrynskyi (nazar-pc)]

For me it happens every time after wake up from sleep mode.

[Eric Riese (jebuswankel)]

I installed what debug packages I could find and filed another bug here: https://bugs.launchpad.net/ubuntu/+source/wpa/+bug/1495743

I marked that as a duplicate of this. Dunno if that was the right thing to do.

I also created this bug: https://bugs.launchpad.net/ubuntu/+source/wpa/+bug/1495741 before I realized I didn't have any better information than the original.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Christopher Kyle Horton (christhehorton)]

During normal use of Wily on a Lenovo Yoga laptop convertible, I'm getting this issue upon resuming from suspend.

[Sean Smith (stoc2528)]

Occasionally get this issue when resuming from suspend or hibernation- when hibernation works.

[Nicolas DERIVE (kalon33)]

Happens to me when disabling/enabling wifi in Network-Manager applet (nm-gnome)

[Andreas (andreas-rabus)]

Happens on wake up after hibernate, that is closing laptop,. (With cryptswap if that's of interest...)

[Vincent Fortier (th0ma7)]

same as comment #12 for me. disabling wifi caused this bug in my case.

[Léon Hagenaars-Keus (hagenaarsdotnu)]

Happens for me when disabling and re-enabling wifi through hardware switch.
I did this because the network manager wouldn't reconnect to my wifi after some idle time.
Directly afterwards, wifi automatically reconnects without issue.

[Rich Johnson (nixternal)]

Happens when just booting up, as well as just sitting there.
Xubuntu 15.10

[Daniel Moerner (dmoerner)]

Confirmed, fresh install of Ubuntu 15.10 Beta 2. Error recurs on every suspend from resume and on every startup.

[Sean Smith (stoc2528)]

Fresh install Ubuntu 15.10b2 with updates, occurs when resume from suspend on Latitude E5250