On Fri, Feb 20, 2009 at 2:49 PM, reinette chatre <reinette.chatre@xxxxxxxxx> wrote: > Running with full debugging on all the time will not be practical - but > there is a debug flag that will only be used when encountering a > firmware error. This flag will cause a dump of event information that > will help with debugging. Would it be possible to run your driver with > debug=0x40000 all the time? Unfortunately, debug=0x40000 results in an NULL pointer dereference in iwl_dump_nic_error_log. iwl_dump_nic_error_log+0x3a => iwl-core.c:1668. Logs below. Jason [ 31.033837] iwl3945 0000:03:00.0: Microcode SW error detected. Restarting 0x82000008. [ 31.033887] BUG: unable to handle kernel NULL pointer dereference at (null) [ 31.033901] IP: [<(null)>] (null) [ 31.033912] PGD 0 [ 31.033923] Oops: 0010 [#1] SMP [ 31.033992] last sysfs file: /sys/devices/virtual/backlight/acpi_video0/brightness [ 31.033999] CPU 0 [ 31.034008] Modules linked in: af_packet i915 drm i2c_algo_bit i2c_core binfmt_misc ipv6 acpi_cpufreq cpufreq_ondemand cpufreq_stats cpufreq_powersave cpufreq_userspace cpufreq_conservative freq_table pci_slot sbs sbshc container iptable_filter ip_tables x_tables sbp2 snd_hda_codec_analog snd_hda_intel snd_hda_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss arc4 ecb snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq iwl3945 iwlcore snd_timer thinkpad_acpi joydev snd_seq_device mac80211 pcmcia rfkill lib80211 led_class cfg80211 snd soundcore snd_page_alloc evdev pcspkr battery iTCO_wdt iTCO_vendor_support yenta_socket rsrc_nonstatic psmouse nvram serio_raw wmi video output ac pcmcia_core intel_agp shpchp pci_hotplug button ext3 jbd mbcache sr_mod cdrom ata_piix sd_mod crc_t10dif sg ata_generic ohci1394 ahci pata_acpi ieee1394 libata scsi_mod ehci_hcd uhci_hcd usbcore thermal processor fan fuse [ 31.034351] Pid: 0, comm: swapper Not tainted 2.6.29-rc5-wl #49 7658CTO [ 31.034358] RIP: 0010:[<0000000000000000>] [<(null)>] (null) [ 31.034368] RSP: 0018:ffffffff80797d28 EFLAGS: 00010097 [ 31.034374] RAX: ffffffffa03366e0 RBX: ffff88013b3dd000 RCX: 000000000000001b [ 31.034380] RDX: ffff8800a789c000 RSI: 0000000000000046 RDI: 0000000000800994 [ 31.034387] RBP: ffffffff80797d90 R08: 0000000002000000 R09: 00000000ffffffff [ 31.034393] R10: ffff88013b198180 R11: 0000000000000000 R12: ffff8801349a13a0 [ 31.034399] R13: ffff8801349a13a0 R14: 0000000000800994 R15: ffffffff8078d220 [ 31.034409] FS: 0000000000000000(0000) GS:ffffffff807a0040(0000) knlGS:0000000000000000 [ 31.034416] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b [ 31.034422] CR2: 0000000000000000 CR3: 0000000000201000 CR4: 00000000000006e0 [ 31.034429] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.034435] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 31.034442] Process swapper (pid: 0, threadinfo ffffffff80714000, task ffffffff8065c360) [ 31.034448] Stack: [ 31.034453] ffffffffa02e052a ffffffff80791ac0 ffffffffa032f77c ffff88013b3dd150 [ 31.034468] 0000000082000008 000000000203a74d 0000000000000001 ffffffff8065c360 [ 31.034490] ffff88013b3dd000 0000000000000000 ffff8801349a13a0 ffff8801349b0758 [ 31.034513] Call Trace: [ 31.034519] <IRQ> <0> [<ffffffffa02e052a>] ? iwl_dump_nic_error_log+0x3a/0x460 [iwlcore] [ 31.034564] [<ffffffffa02e1ba5>] iwl_irq_handle_error+0xc5/0x630 [iwlcore] [ 31.034594] [<ffffffff80260a89>] ? ktime_get_ts+0x59/0x60 [ 31.034614] [<ffffffffa031a9c4>] iwl3945_irq_tasklet+0xf94/0x1500 [iwl3945] [ 31.034639] [<ffffffff802db4bf>] ? __slab_free+0x18f/0x350 [ 31.034652] [<ffffffff80260843>] ? hrtimer_get_next_event+0xd3/0xe0 [ 31.034664] [<ffffffff80265c29>] ? getnstimeofday+0x59/0xe0 [ 31.034676] [<ffffffff8024ba39>] tasklet_action+0x69/0xf0 [ 31.034688] [<ffffffff8024c304>] __do_softirq+0x94/0x160 [ 31.034703] [<ffffffff8020d7fc>] call_softirq+0x1c/0x30 [ 31.034714] [<ffffffff8020eb35>] do_softirq+0x45/0x90 [ 31.034727] [<ffffffff8024c065>] irq_exit+0x75/0xa0 [ 31.034737] [<ffffffff8020edb6>] do_IRQ+0x86/0x110 [ 31.034747] [<ffffffff8020d0d3>] ret_from_intr+0x0/0xa [ 31.034758] <EOI> <0> [<ffffffffa001d564>] ? acpi_idle_enter_bm+0x26a/0x2b1 [processor] [ 31.034788] [<ffffffffa001d55a>] ? acpi_idle_enter_bm+0x260/0x2b1 [processor] [ 31.034809] [<ffffffff8050ddff>] ? notifier_call_chain+0x3f/0x80 [ 31.034822] [<ffffffff80453b95>] ? cpuidle_idle_call+0xa5/0x100 [ 31.034835] [<ffffffff8020af42>] ? cpu_idle+0x62/0xc0 [ 31.034848] [<ffffffff804f6a91>] ? rest_init+0x61/0x70 [ 31.034861] Code: Bad RIP value. [ 31.034877] RIP [<(null)>] (null) [ 31.034885] RSP <ffffffff80797d28> [ 31.034890] CR2: 0000000000000000 [ 31.034898] ---[ end trace e44c505d0aa011bb ]--- [ 31.034907] Kernel panic - not syncing: Fatal exception in interrupt [ 31.034918] ------------[ cut here ]------------ -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
