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[Bug 1313221] [NEW] modprobe wl crashes with broadcom 4306


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I was installing Xubuntu 14.04. It said 'Configuring bcmwl-kernel-source
(amd64)' and in the details "DKMS: install completed." and it just froze
there. To continue installation I had to open up a terminal and execute
'sudo killall -9 modprobe'

After getting it installed, I found out that the 'wl' module causes
problems with my broadcom 4306 wireless card. I had to add it to the
module blacklist.

When I load the 'b43' module first (which is the correct module for my
card), it loads fine [dmesg-b43-first.txt, 134-136]. Then when I try to
load the 'wl' module after that, it seems to fail gracefully
[dmesg-b43-first.txt, 203-end]. This seems normal to me.

However, when I load the 'wl' module first, I get a stack trace [dmesg-
wl-first.txt, 62-end]. I cannot unload it after that as it says it's in
use. If I try to load 'b43' after that, modprobe just freezes (which I
assume is what happened during installation). The system also freezes
during reboot and I need to hard reboot my system.

Two issues here it seems:
1. The wrong module is being automatically loaded for my card. It should be 'b43' not 'wl'.
2. More importantly, 'wl' is causing a stack trace and causing the modprobe process to lock up when loading 'b43'.

Please let me know if you need any more information and thank you for
the assistance.

** Affects: bcmwl (Ubuntu)
     Importance: Undecided
         Status: New

** Tags: bot-comment
modprobe wl crashes with broadcom 4306
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