Re: iwl4965 oops in 2.6.26-rc5 x86_64

[Dan Williams <dcbw@redhat.com>]

On Sun, 2008-06-08 at 18:31 +0300, Tomas Winkler wrote:
> On Sun, Jun 8, 2008 at 3:21 PM, Thomas Backlund <tmb@mandriva.org> wrote:
> > Tomas Winkler skrev:
> >>
> >> I'm not sure what distro are you running I haven't seen this
> >> ifcfg-wlan0 config options
> >> on my system but can it be that ifcg-wlan0 tries to set wep key which
> >> will conflict
> >> with wpa_supplicant setting. Can you try to remove this line from that
> >> file
> >>
> >> ifcfg-wlan0 -
> >> --- cut ---
> >> WIRELESS_ENC_KEY='s:*************************'
> >>
> >>
> >
> >
> > Nice.
> >
> > The distro is Mandriva Cooker (development) but we have the same in Mandriva
> > 2008.1 Spring.
> >
> > Now this has not been any problem with kernels older than 2.6.25, so it's a
> > regression, isn't it? I mean, shouldn't the module protect itself against
> > empty variables?
> >
> This is not really regression. What happen is that we've enabled hw
> crypto acceleration by default so when
> you switched back to sw crypto it still worked.
> There is bug no question, I believe it's the same bug as Ian Schram
> and Joonwoo Park reported (PSK key is longer then 128 WEP Key)

I thought that issues was about actual WEP keys larger than 128-bit;
some D-Link APs and cards allowed 152-bit WEP keys back before WPA was
common.  We decided not to care about those right now, but I didn't
think that would impact TKIP at all.  Does the TKIP key material go
through the same path in the iwl driver that WEP key material does?

Dan


> > And that config option also exist in Redhat initscripts ifup-wireless...
> >
> > Anyway, you found the initial problem, as the kernel now booted without an
> > oops, and seems to work, but:
> >
> 
> Try to disable this one from th config file MAC80211_DEBUG_PACKET_ALIGNMENT
> 
> Thanks
> Tomas
> 
> 0: switched to short barker preamble (BSSID=00:19:5b:51:dc:27)
> > wlan0 (WE) : Wireless Event too big (320)
> > ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
> > ------------[ cut here ]------------
> > WARNING: at net/mac80211/rx.c:319 __ieee80211_rx_handle_packet+0x349/0x794
> > [mac80211]()
> > Modules linked in: af_packet kvm_intel kvm snd_seq_dummy snd_seq_oss
> > snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss ipv6
> > xt_tcpudp iptable_filter ip_tables x_tables binfmt_misc loop dm_mod
> > cpufreq_ondemand cpufreq_conservative cpufreq_powersave acpi_cpufreq
> > freq_table tifm_sd tifm_7xx1 tifm_core nvram pcmcia ohci1394 ieee1394
> > mmc_block arc4 ecb crypto_blkcipher battery ac video container output
> > firewire_ohci firewire_core crc_itu_t sdhci iwl4965 firmware_class mmc_core
> > yenta_socket rsrc_nonstatic iwlcore pcmcia_core acer_wmi thermal
> > snd_hda_intel rfkill snd_pcsp button nsc_ircc snd_pcm mac80211 led_class
> > i2c_i801 irda snd_timer rtc_cmos snd processor rtc_core wmi rtc_lib i2c_core
> > soundcore iTCO_wdt iTCO_vendor_support snd_page_alloc tg3 cfg80211 intel_agp
> > joydev crc_ccitt sr_mod serio_raw sg evdev cdrom ide_generic piix ide_core
> > ata_piix ahci libata dock sd_mod scsi_mod ext3 jbd uhci_hcd ohci_hcd
> > ehci_hcd usbcore [last unloaded: nf_conntrack]
> > Pid: 0, comm: swapper Not tainted 2.6.26-0.rc5.1mdvsmp #1
> >
> > Call Trace:
> >  <IRQ>  [<ffffffff802371ff>] warn_on_slowpath+0x58/0x94
> >  [<ffffffff8044ad1b>] ? _spin_unlock_irqrestore+0x40/0x57
> >  [<ffffffff8023c2f1>] ? __tasklet_schedule+0xae/0xc5
> >  [<ffffffffa01eab1e>] ? :mac80211:ieee80211_rx_irqsafe+0x63/0x6a
> >  [<ffffffffa0306d32>] ? :iwl4965:iwl4965_handle_data_packet+0x3c3/0x3fd
> >  [<ffffffffa01eb1ce>] :mac80211:__ieee80211_rx_handle_packet+0x349/0x794
> >  [<ffffffff8025791c>] ? __lock_acquire+0x635/0xd5a
> >  [<ffffffffa01eba3c>] ? :mac80211:__ieee80211_rx+0x63/0x538
> >  [<ffffffffa01ebe9d>] :mac80211:__ieee80211_rx+0x4c4/0x538
> >  [<ffffffffa01dc348>] :mac80211:ieee80211_tasklet_handler+0x75/0x11b
> >  [<ffffffff8023c079>] ? tasklet_action+0x4b/0xfb
> >  [<ffffffff8023c0be>] tasklet_action+0x90/0xfb
> >  [<ffffffff8023cae6>] __do_softirq+0x77/0x101
> >  [<ffffffff8020d61c>] call_softirq+0x1c/0x28
> >  [<ffffffff8020e92d>] do_softirq+0x4d/0xb0
> >  [<ffffffff8023c5ab>] irq_exit+0x4e/0x8f
> >  [<ffffffff8020ebc5>] do_IRQ+0xba/0xd8
> >  [<ffffffff8020c6f2>] ret_from_intr+0x0/0x1e
> >  <EOI>  [<ffffffff8021fe6d>] ? native_irq_enable+0x6/0x7
> >  [<ffffffffa018d45a>] ? :processor:acpi_idle_enter_bm+0x2cf/0x35e
> >  [<ffffffff803c338a>] ? menu_select+0x6f/0x8f
> >  [<ffffffff803c2395>] ? cpuidle_idle_call+0x95/0xc9
> >  [<ffffffff803c2300>] ? cpuidle_idle_call+0x0/0xc9
> >  [<ffffffff8020b1cc>] ? default_idle+0x0/0x55
> >  [<ffffffff8020b184>] ? cpu_idle+0x9c/0xe4
> >  [<ffffffff80444e86>] ? start_secondary+0x179/0x17d
> >
> > ---[ end trace a4f2fe9605e20ed0 ]---
> >
> >
> > --
> > Thomas
> >
> --
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