Re: [BUG] Crda oopses the system

Maxim Levitsky
2009-05-12T22:07:38Z

On Tue, 2009-05-12 at 15:00 -0700, Luis R. Rodriguez wrote:
> On Tue, May 12, 2009 at 10:34 AM, Maxim Levitsky
> <maximlevitsky@gmail.com> wrote:
> > On Tue, 2009-05-12 at 10:24 -0700, Luis R. Rodriguez wrote:
> >> On Tue, May 12, 2009 at 8:05 AM, Maxim Levitsky <maximlevitsky@gmail.com> wrote:
> >> > On Sun, 2009-05-10 at 12:36 -0700, Luis R. Rodriguez wrote:
> >> >> On Sun, May 10, 2009 at 12:34 PM, Maxim Levitsky
> >> >> <maximlevitsky@gmail.com> wrote:
> >> >> > On Sun, 2009-05-10 at 11:33 -0700, Luis R. Rodriguez wrote:
> >> >> >> On Sun, May 10, 2009 at 5:20 AM, Maxim Levitsky <maximlevitsky@gmail.com> wrote:
> >> >> >> > On Wed, 2009-05-06 at 16:34 -0400, Pavel Roskin wrote:
> >> >> >> >> gdb /lib/modules/`uname -r`/kernel/net/wireless/cfg80211.ko
> >> >> >> >
> >> >> >> > I have recompiled the kernel with debugging info.
> >> >> >> >
> >> >> >> > This is new backtrace:
> >> >
> >> > Ok, here is what I found:
> >> >
> >> > The real BUG_ON that fires up is at
> >> >
> >> > wireless/reg.c: __set_regdom: BUG_ON(!country_ie_regdomain)
> >> >
> >> > Confirmed by replacing it with printk.
> >> >
> >> >
> >> > I attach a beacon sample that triggers this:
> >>
> >> Thanks for that. Was this from wireless-testing? If so as of what SHA1
> >> sum? Can you provide steps to reproduce? What AP? What card?
> > wireless-testing, b2382a4aeff07a481ccf860e4f716b48b52e3781
>
> That HEAD is buggy, its missing a fix for the minstrel/pid fix.
> Although since you are running iwl3945 it explains why you haven't
> seen that oops.
>
> Will look into this -- thanks. How easy can you reproduce BTW? Does it
> happen immediately upon assoc? Does it happen with other APs at the
> university?
Happens always when I try to associate.
In fact, after a boot, this oops is in dmesg, and whole system
semi-frozen. (can't get root, etc probably due to locks held)

Other APs, I don't see many other APs there, (you mean other essids,
right?)

Most of them are encrypted anyway.

I have just compiled HEAD of wireless-testing, I see how well it will
work tomorrow.

Thanks in advance,
Maxim Levitsky
>
> Luis