Red Hat Bugzilla – Bug 435962
[b43] Several kernel oopses with 2.6.24-17.fc8
Last modified: 2008-03-05 13:03:57 EST
Description of problem:
On my laptop Dell Inspiron 1501, a series of oopses apparently caused by
mac80211 caused a hard lock.
Version-Release number of selected component (if applicable):
Pretty much random...
I use the b43 driver on a BCM4312 device, with firmware 410.2160.
Attaching the relative log dumps.
Created attachment 296770 [details]
kernel log dump concernig the oopses
Michael, this kernel has the equivalent wireless bits to the rawhide kernel
described in bug 435958. It looks like a similar issue to me. Have you seen
anything like this?
Dario, what was the last kernel working for you?
yes this seems similiar.
Note that it first faults in ieee80211_key_free() and then throws WARN_ON() on
access of the key struct.
Maybe this is related to the locking changes (rcu-ification) made to that code?
Key refcounting bug?
Please try this patch:
(In reply to comment #3)
> Dario, what was the last kernel working for you?
Prior to this, I was using 2.6.24-13 without particular issues.
I've been using kernel 2.6.24-18 for some hours now and this problem didn't come
up. Usually system was locking withing 10 minutes from boot so I guess we can
say this bug is solved...
Closing based on comment 7 -- thanks to Johannes and Michael for the advice!