Re: [crash] BUG: unable to handle kernel NULL pointer dereference at 0000000000000370

Patrick McHardy wrote:

David Miller wrote:

quoted

Maybe something like the following should do it?

It looks correct in any case. I'm not sure whether it fixes
this lockdep warning though, according to the backtrace and
module list its b43 and dev_mc_sync in net/mac80211/main.c
that are causing the error, which don't seem to be included
in your patch. I'm unable to find where it previously
initialized the xmit_lock lockdep class though, so I must
be missing something :)

This is what I was missing, we're setting a lockdep class
by default depending on dev->type. This patch combined
with yours should fix all addr_list_lock warnings.