wpa_supplicant crashed with SIGSEGV in __libc_start_main()

[joecon]

Binary package hint: wpasupplicant

wpa_supplicant crashed with SIGSEGV in __libc_start_main()

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: wpasupplicant 0.7.3-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-5.32-generic 2.6.38-rc6
Uname: Linux 2.6.38-5-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Fri Mar 4 16:23:33 2011
ExecutablePath: /sbin/wpa_supplicant
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110202)
ProcCmdline: /sbin/wpa_supplicant -u -s
ProcEnviron:

SegvAnalysis:
 Segfault happened at: 0x47d516: mov 0x40(%rax),%rax
 PC (0x0047d516) ok
 source "0x40(%rax)" (0x0607e04d) not located in a known VMA region (needed readable region)!
 destination "%rax" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: wpasupplicant
StacktraceTop:
 ?? ()
 ?? ()
 ?? ()
 ?? ()
 __libc_start_main () from /lib/libc.so.6
Title: wpa_supplicant crashed with SIGSEGV in __libc_start_main()
UpgradeStatus: Upgraded to natty on 2011-03-03 (1 days ago)
UserGroups:

[Apport retracing service (apport)]

StacktraceTop:
 wpa_drv_set_countermeasures (eloop_ctx=<value optimized out>, sock_ctx=0x0) at driver_i.h:50
 wpa_supplicant_stop_countermeasures (eloop_ctx=<value optimized out>, sock_ctx=0x0) at events.c:101
 eloop_run () at ../src/utils/eloop.c:542
 wpa_supplicant_run (global=0x20ecb90) at wpa_supplicant.c:2357
 main (argc=<value optimized out>, argv=<value optimized out>) at main.c:274

[Mathieu Trudel-Lapierre (cyphermox)]

Hi,

Is this happening every time you try to connect to a wireless network? (probably specific to WPA-secured networks)

If not, can you please describe the exact circumstances that trigger this crash (I know about the reboot of an AP, but want to confirm if there are other circumstances that trigger this).

Unfortunately, as it is I'm not sure why the data needed by wpa_drv_set_countermeasures() (e.g. eloop_ctx, or the wpa_s variable) is unset when that function gets to run. I think it's because wpa_supplicant is shutting down at the time, before this function gets to be run, but I'd like to make sure. What could help with this would be to provide the logs from /var/log/syslog just after reproducing the crash.

Thanks in advance.

[Gregory M. Blumenthal Scharf (llameadrpc)]

It is intermittent. Also affects Ubuntu 11.10 with Linux 3.0.0-14-generic #23-Ubuntu SMP Mon Nov 21 20:34:47 UTC 2011 i686 i686 i386 GNU/Linux

[George Shuklin (george-shuklin)]

This crash happens short after rmmod/modprobe for wifi drivers on my Thinkpad X220.

[Joel (joel-analista)]

Ubuntu 12.04 amd64
Acer 4530

[Stephen Wilson (smwilsonau)]

xubuntu 12.04 amd64
Thinkpad X301

How is it "medium" importance that wireless does not work?

[Antonio Roberts (hellocatfood)]

Still happening on Dell XPS 13 Developer edition with Ubuntu 13.10 64-bit and Atheros AR9462 Wireless Network Adapter

[PvZ (zuijlen)]

Also dump on 13.10 64-bit on Acer Aspire E1-572.