Messages in this thread | | | Date | Sun, 18 May 2008 22:22:52 +0200 | From | "Alex Riesen" <> | Subject | ieee80211: unable to handle kernel NULL pointer dereference |
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My laptop (Dell XPS m1330, Core 2 Duo, 64bit, IWL3945) failed to associate today (the AP was *very* busy with a big long transfer). After looking in the logs I found this (full dmesg and the relevant part of syslog attached):
May 18 18:59:24 blimp kernel: wlan0: RX deauthentication from 00:16:b6:ed:e7:98 (reason=7) May 18 18:59:24 blimp kernel: wlan0: deauthenticated May 18 18:59:24 blimp kernel: wlan0: RX deauthentication from 00:16:b6:ed:e7:98 (reason=7) May 18 18:59:24 blimp last message repeated 34 times May 18 18:59:24 blimp kernel: wlan0: authenticate with AP 00:16:b6:ed:e7:98 May 18 18:59:24 blimp kernel: wlan0: RX authentication from 00:16:b6:ed:e7:98 (alg=0 transaction=2 status=0) May 18 18:59:24 blimp kernel: wlan0: authenticated May 18 18:59:24 blimp kernel: wlan0: associate with AP 00:16:b6:ed:e7:98 May 18 18:59:24 blimp kernel: BUG: unable to handle kernel NULL pointer dereference at 00000000000000c0 May 18 18:59:24 blimp kernel: IP: [ieee80211_associate+0x2a0/0x536] ieee80211_associate+0x2a0/0x536 May 18 18:59:24 blimp kernel: PGD 0 May 18 18:59:24 blimp kernel: Oops: 0000 [1] PREEMPT SMP May 18 18:59:24 blimp kernel: CPU 0 May 18 18:59:24 blimp kernel: Modules linked in: af_packet binfmt_misc cpufreq_stats cpufreq_powersave cpufreq_conservative cpufreq_userspace sbs sbshc iptable_filter ip_tables x_tables aes_x86_64 dm_crypt dm_mod sbp2 fuse snd_hda_intel snd_pcm_oss snd_mixer_oss snd_pcm snd_page_alloc snd_hwdep snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event uvcvideo snd_seq snd_timer snd_seq_device compat_ioctl32 sdhci videodev ohci1394 ieee1394 mmc_core snd v4l1_compat ricoh_mmc serio_raw iTCO_wdt sg shpchp pci_hotplug ata_generic iTCO_vendor_support soundcore evdev dcdbas May 18 18:59:24 blimp kernel: Pid: 398, comm: iwl3945 Not tainted 2.6.26-rc2-t #17 May 18 18:59:24 blimp kernel: RIP: 0010:[ieee80211_associate+0x2a0/0x536] [ieee80211_associate+0x2a0/0x536] ieee80211_associate+0x2a0/0x536 May 18 18:59:24 blimp kernel: RSP: 0018:ffff81007f261b20 EFLAGS: 00010246 May 18 18:59:24 blimp kernel: RAX: 0000000000000000 RBX: ffff810077130010 RCX: 0000000000000000 May 18 18:59:24 blimp kernel: RDX: ffff81007f0d6000 RSI: 0000000000000000 RDI: ffff81007713002e May 18 18:59:24 blimp kernel: RBP: ffff81007f261ba0 R08: ffffffff8066fcc0 R09: ffff810053c97f00 May 18 18:59:24 blimp kernel: R10: 0000000000000010 R11: ffff81007f261aa0 R12: 0000000000000000 May 18 18:59:24 blimp kernel: R13: ffff81007f0d6850 R14: ffff810053c97f00 R15: ffff81007713002c May 18 18:59:24 blimp kernel: FS: 0000000000000000(0000) GS:ffffffff80665000(0000) knlGS:0000000000000000 May 18 18:59:24 blimp kernel: CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b May 18 18:59:24 blimp kernel: CR2: 00000000000000c0 CR3: 0000000000201000 CR4: 00000000000006e0 May 18 18:59:24 blimp kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 May 18 18:59:24 blimp kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 May 18 18:59:24 blimp kernel: Process iwl3945 (pid: 398, threadinfo ffff81007f260000, task ffff81007f239e00) May 18 18:59:24 blimp kernel: Stack: ffff81007f0d6000 0000000000000000 0000000000000002 ffff81007f0d68cc May 18 18:59:24 blimp kernel: ffff81007e402598 0000000000000000 36623a36313a3030 393a37653a64653a May 18 18:59:24 blimp kernel: ffff81007f260038 ffffffff80432e80 000000067f261c60 ffff81007f0d6850 May 18 18:59:24 blimp kernel: Call Trace: May 18 18:59:24 blimp kernel: [_format_mac_addr+0x4d/0x8e] ? _format_mac_addr+0x4d/0x8e May 18 18:59:24 blimp kernel: [ieee80211_auth_completed+0x30/0x35] ieee80211_auth_completed+0x30/0x35 May 18 18:59:24 blimp kernel: [ieee80211_sta_rx_queued_mgmt+0x5a2/0xf5f] ieee80211_sta_rx_queued_mgmt+0x5a2/0xf5f May 18 18:59:24 blimp kernel: [dev_hard_start_xmit+0x1d5/0x25d] ? dev_hard_start_xmit+0x1d5/0x25d May 18 18:59:24 blimp kernel: [dm_mod:_spin_lock+0x16/0x108] ? _spin_lock+0x16/0x2e May 18 18:59:24 blimp kernel: [local_bh_disable+0xe/0x10] ? local_bh_disable+0xe/0x10 May 18 18:59:24 blimp kernel: [local_bh_enable_ip+0x40/0x59] ? local_bh_enable_ip+0x40/0x59 May 18 18:59:24 blimp kernel: [snd_pcm:getnstimeofday+0x3a/0x8f72] ? getnstimeofday+0x3a/0x88 May 18 18:59:24 blimp kernel: [snd_pcm:ktime_get_ts+0x49/0x3fc] ? ktime_get_ts+0x49/0x4e May 18 18:59:24 blimp kernel: [snd_pcm:getnstimeofday+0x3a/0x8f72] ? getnstimeofday+0x3a/0x88 May 18 18:59:24 blimp kernel: [snd_hda_intel:_spin_unlock_irqrestore+0x12/0x2b] ? _spin_unlock_irqrestore+0x12/0x2b May 18 18:59:24 blimp kernel: [ieee80211_sta_work+0xc1/0x750] ieee80211_sta_work+0xc1/0x750 May 18 18:59:24 blimp kernel: [snd_hda_intel:_spin_lock_irqsave+0x18/0x34] ? _spin_lock_irqsave+0x18/0x34 May 18 18:59:24 blimp kernel: [hrtick_set+0xde/0xe7] ? hrtick_set+0xde/0xe7 May 18 18:59:24 blimp kernel: [thread_return+0x9e/0xc6] ? thread_return+0x9e/0xc6 May 18 18:59:24 blimp kernel: [ieee80211_sta_work+0x0/0x750] ? ieee80211_sta_work+0x0/0x750 May 18 18:59:24 blimp kernel: [run_workqueue+0x94/0x13e] run_workqueue+0x94/0x13e May 18 18:59:24 blimp kernel: [worker_thread+0xe2/0xf3] worker_thread+0xe2/0xf3 May 18 18:59:24 blimp kernel: [<ffffffff8024411e>] ? autoremove_wake_function+0x0/0x38 May 18 18:59:24 blimp kernel: [worker_thread+0x0/0xf3] ? worker_thread+0x0/0xf3 May 18 18:59:24 blimp kernel: [kthread+0x49/0x77] kthread+0x49/0x77 May 18 18:59:24 blimp kernel: [child_rip+0xa/0x12] child_rip+0xa/0x12 May 18 18:59:24 blimp kernel: [kthread+0x0/0x77] ? kthread+0x0/0x77 May 18 18:59:24 blimp kernel: [child_rip+0x0/0x12] ? child_rip+0x0/0x12 May 18 18:59:24 blimp kernel: May 18 18:59:24 blimp kernel: May 18 18:59:24 blimp kernel: Code: f6 ff c6 00 00 49 89 c7 49 8b 85 a0 00 00 00 49 8d 7f 02 fc 41 88 47 01 49 8b 8d a0 00 00 00 48 8b 75 98 f3 a4 31 f6 48 8b 4d a8 <4c> 8b 89 c0 00 00 00 48 c7 45 88 00 00 00 00 eb 50 48 8b 5d a8 May 18 18:59:24 blimp kernel: RIP [ieee80211_associate+0x2a0/0x536] ieee80211_associate+0x2a0/0x536 May 18 18:59:24 blimp kernel: RSP <ffff81007f261b20> May 18 18:59:24 blimp kernel: CR2: 00000000000000c0 May 18 18:59:24 blimp kernel: ---[ end trace 0fbf8adf45e059dd ]--- [unhandled content-type:application/octet-stream][unhandled content-type:application/octet-stream] | |