NetworkManager crashing upon dbus call: getNetworks()

["Ole Martin" <nmlist olemartin org>]

Hi!

I'm writing a python application/script which is using the NetworkManager dbus API. I have done this successfully before, but now things suddenly starting acting wierd.

Whenever i call <wireless device>.getNetworks(), dbus throws an exception with these details:

org.freedesktop.DBus.Error.NoReply: Message did not receive a reply (timeout by message bus)

Although it says it's  a timeout, i don't really think so:

root # time python script.py
org.freedesktop.DBus.Error.NoReply: Message did not receive a reply (timeout by message bus)

real    0m0.134s
user    0m0.060s
sys    0m0.008s

As i said, this worked well before, and i don't think there should be any of the changes i did to the code which could raise this..

Code:

try:
    for network in self.device_wlan.getNetworks():
        netObj = self.bus.get_object('org.freedesktop.NetworkManager', network)
        networks.append(<boring details about netObj>)
except Exception, details: # Catch the exception, just to make it pretty for you..
    print str(details)

Any input on this is appreciated! :-)

Thanks,
Ole Martin

And, at last, the latest additions to my log file:

<info>  Activation (wlan0) Finish handler scheduled.
<info>  Activation (wlan0) Stage 5 of 5 (IP Configure Commit) complete.
<info>  Activation (wlan0) successful, device activated.
<WARN>  nm_signal_handler(): Caught signal 11.  Generating backtrace...
******************* START **********************************
(no debugging symbols found)
Using host libthread_db library "/lib/libthread_db.so.1".
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[Thread debugging using libthread_db enabled]
[New Thread 0xb7b376c0 (LWP 11615)]
[New Thread 0xb69ffb90 (LWP 11665)]
[New Thread 0xb7335b90 (LWP 11622)]
[New Thread 0xb7b36b90 (LWP 11619)]
(no debugging symbols found)
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0xffffe410 in __kernel_vsyscall ()
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb7e85fab in waitpid () from /lib/libpthread.so.0
#2  0x0806e53e in ?? ()
#3  0x00002db4 in ?? ()
#4  0xbfcbf3d8 in ?? ()
#5  0x00000000 in ?? ()

Thread 4 (Thread 0xb7b36b90 (LWP 11619)):
#0  0xffffe410 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb7c16e63 in poll () from /lib/libc.so.6
No symbol table info available.
#2  0xb7d36413 in ?? () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#3  0x0809ed88 in ?? ()
No symbol table info available.
#4  0x00000002 in ?? ()
No symbol table info available.
#5  0x000007d0 in ?? ()
No symbol table info available.
#6  0x0809ed88 in ?? ()
No symbol table info available.
#7  0x00000002 in ?? ()
No symbol table info available.
#8  0xb7dc1214 in ?? () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#9  0x0809e490 in ?? ()
No symbol table info available.
#10 0xb7b36324 in ?? ()
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#11 0x00000001 in ?? ()
No symbol table info available.
#12 0x00000001 in ?? ()
No symbol table info available.
#13 0x0809e490 in ?? ()
No symbol table info available.
#14 0x0809ed88 in ?? ()
No symbol table info available.
#15 0xb7c16df0 in ?? () from /lib/libc.so.6
No symbol table info available.
#16 0xb7e81b90 in ?? () from /lib/libpthread.so.0
No symbol table info available.
#17 0xb7e80420 in ?? () from /lib/libpthread.so.0
No symbol table info available.
#18 0xb7d56243 in g_thread_self () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#19 0xb7d36797 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#20 0x08057f1e in ?? ()
No symbol table info available.
#21 0x0809d6d0 in ?? ()
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#22 0x0809bfb8 in ?? ()
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#23 0x0809ef70 in ?? ()
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#24 0xb7e81b90 in ?? () from /lib/libpthread.so.0
No symbol table info available.
#25 0xb7b36388 in ?? ()
No symbol table info available.
#26 0xb7dc1214 in ?? () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#27 0xb7b363b8 in ?? ()
No symbol table info available.
#28 0xb7d567bf in ?? () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#29 0x0809f108 in ?? ()
No symbol table info available.
#30 0x0809ef70 in ?? ()
No symbol table info available.
#31 0xb7e79000 in ?? ()
No symbol table info available.
#32 0x00014084 in ?? ()
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#33 0xb7b66a70 in ?? () from /lib/libc.so.6
No symbol table info available.
#34 0xb7e8cff4 in ?? () from /lib/libpthread.so.0
No symbol table info available.
#35 0xb7e80420 in ?? () from /lib/libpthread.so.0
No symbol table info available.
#36 0xb7e8cff4 in ?? () from /lib/libpthread.so.0
No symbol table info available.
#37 0x00000000 in ?? ()
No symbol table info available.

Thread 3 (Thread 0xb7335b90 (LWP 11622)):
#0  0xffffe410 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb7c16e63 in poll () from /lib/libc.so.6
No symbol table info available.
#2  0xb7d36413 in ?? () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#3  0x080a01f8 in ?? ()
No symbol table info available.
#4  0x00000001 in ?? ()
No symbol table info available.
#5  0xffffffff in ?? ()
No symbol table info available.
#6  0x080a01f8 in ?? ()
No symbol table info available.
#7  0x00000001 in ?? ()
No symbol table info available.
#8  0xb7dc1214 in ?? () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#9  0x080a1160 in ?? ()
No symbol table info available.
#10 0xb7335324 in ?? ()
No symbol table info available.
#11 0x00000001 in ?? ()
No symbol table info available.
#12 0x00000001 in ?? ()
No symbol table info available.
#13 0x080a1160 in ?? ()
No symbol table info available.
#14 0x080a01f8 in ?? ()
No symbol table info available.
#15 0xb7c16df0 in ?? () from /lib/libc.so.6
No symbol table info available.
#16 0xb7e81b90 in ?? () from /lib/libpthread.so.0
No symbol table info available.
#17 0xb7e80420 in ?? () from /lib/libpthread.so.0
No symbol table info available.
#18 0xb7d56243 in g_thread_self () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#19 0xb7d36797 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#20 0x08057f1e in ?? ()
No symbol table info available.
#21 0x0809efc8 in ?? ()
No symbol table info available.
#22 0x0809bfb8 in ?? ()
No symbol table info available.
#23 0x080a01d0 in ?? ()
No symbol table info available.
#24 0xb7e81b90 in ?? () from /lib/libpthread.so.0
No symbol table info available.
#25 0xb7335388 in ?? ()
No symbol table info available.
#26 0xb7dc1214 in ?? () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#27 0xb73353b8 in ?? ()
No symbol table info available.
#28 0xb7d567bf in ?? () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#29 0x080a1800 in ?? ()
No symbol table info available.
#30 0x080a01d0 in ?? ()
No symbol table info available.
#31 0x00000000 in ?? ()
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Thread 2 (Thread 0xb69ffb90 (LWP 11665)):
#0  0xffffe410 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb7e8500b in read () from /lib/libpthread.so.0
No symbol table info available.
#2  0xb7d33e8e in ?? () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#3  0x00000010 in ?? ()
No symbol table info available.
#4  0xb69ff368 in ?? ()
No symbol table info available.
#5  0x00000014 in ?? ()
No symbol table info available.
#6  0xb7e84d41 in __lll_mutex_unlock_wake () from /lib/libpthread.so.0
No symbol table info available.
#7  0xb7e81ba9 in _L_mutex_unlock_60 () from /lib/libpthread.so.0
No symbol table info available.
#8  0xb7e8183e in __pthread_mutex_unlock_usercnt () from /lib/libpthread.so.0
No symbol table info available.
#9  0xb7d567bf in ?? () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#10 0x00000000 in ?? ()
No symbol table info available.

Thread 1 (Thread 0xb7b376c0 (LWP 11615)):
#0  0xffffe410 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb7e85fab in waitpid () from /lib/libpthread.so.0
No symbol table info available.
#2  0x0806e53e in ?? ()
No symbol table info available.
#3  0x00002db4 in ?? ()
No symbol table info available.
#4  0xbfcbf3d8 in ?? ()
No symbol table info available.
#5  0x00000000 in ?? ()
No symbol table info available.
#0  0xffffe410 in __kernel_vsyscall ()
The program is running.  Quit anyway (and detach it)? (y or n) [answered Y; input not from terminal]
******************* END **********************************