kernel oops with madwif

Gijs Hillenius gijs at
Sun Jun 25 19:42:03 UTC 2006

Hello Debian maintainers,

I am not sure you want these messages, but just in case you do:

I am using wmwifi 0.5-1 in a Debian linux 2.6.15-1-686 with most of
Testing (& a little from Unstable).

I use ath_pci to configure an access point. This ran for two days, and
just now failed to communicate with an Ibook (airport). Maybe I
handled it wrong, but I thought rmmod ath_pci and reinserting would
maybe help:

but then I got ..

 kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000005
 kernel:  printing eip:
 kernel: c0170cb8
 kernel: *pde = 00000000
 kernel: Oops: 0000 [#1]
 kernel: Modules linked in: lp wlan_wep wlan_scan_ap ath_pci ath_rate_sample wlan ath_hal w83781d hwmon_vid i2c_dev ipt_state ipt_limit ipt_MASQUERADE ipt_LOG iptable_nat ip_nat ip_conntrack nfnetlink iptable_filter ip_tables ipv6 ext2 reiserfs dm_mod CnxADSL br2684 via686a i2c_isa shpchp i2c_viapro via_agp pci_hotplug agpgart i2c_core snd_ens1371 gameport snd_rawmidi snd_seq_device snd_ac97_codec snd_pcm snd_timer snd soundcore snd_page_alloc snd_ac97_bus uhci_hcd 8139cp 8139too mii usbcore rtc floppy psmouse serio_raw parport_pc parport pcspkr ide_cd cdrom joydev ext3 jbd mbcache ide_disk generic via82cxxx ide_core evdev mousedev
 kernel: CPU:    0
 kernel: EIP:    0060:[<c0170cb8>]    Tainted: P      VLI
 kernel: EFLAGS: 00010286   (2.6.15-1-686)
 kernel: EIP is at remove_proc_entry+0x33/0x103
 kernel: eax: 00000000   ebx: e6f6d260   ecx: ffffffff   edx: 00000005
 kernel: esi: c928c260   edi: 00000005   ebp: e6f6d260   esp: e3877e58
 kernel: ds: 007b   es: 007b   ss: 0068
 kernel: Process rmmod (pid: 29130, threadinfo=e3876000 task=dbdaa070)
 kernel: Stack: 00000005 e6f6d260 c928c260 e6f6d000 f0db5332 00000005 d6499b40 f0dbb122
 kernel:        df4d4900 e6f6d260 f0d9ea8c e6f6d260 e6f6d2c0 00000001 c928c260 c928c000
 kernel:        f0b0541d e6f6d260 c928c000 cdf48000 c928c260 cdf48000 c928c000 e3876000
 kernel: Call Trace:
 kernel:  [<f0db5332>] ieee80211_sysctl_vdetach+0x49/0xb5 [wlan]
 kernel:  [<f0d9ea8c>] ieee80211_vap_detach+0x76/0xbd [wlan]
 kernel:  [<f0b0541d>] ath_vap_delete+0x10e/0x233 [ath_pci]
 kernel:  [<f0d9e5e2>] ieee80211_ifdetach+0x13/0x66 [wlan]
 kernel:  [<f0b04e4a>] ath_detach+0x69/0xd4 [ath_pci]
 kernel:  [<f0b0f952>] ath_pci_remove+0x0/0x6a [ath_pci]
 kernel:  [<f0b0f964>] ath_pci_remove+0x12/0x6a [ath_pci]
 kernel:  [<c01ac702>] pci_device_remove+0x19/0x2c
 kernel:  [<c01fd099>] __device_release_driver+0x47/0x62
 kernel:  [<c01fd110>] driver_detach+0x36/0x4c
 kernel:  [<c01fcc5b>] bus_remove_driver+0x39/0x5c
 kernel:  [<c01fd36c>] driver_unregister+0xb/0x15
 kernel:  [<c01ac8c7>] pci_unregister_driver+0xe/0x19
 kernel:  [<f0b0fb43>] exit_ath_pci+0xf/0x23 [ath_pci]
 kernel:  [<c0128719>] sys_delete_module+0x121/0x152
 kernel:  [<c013e969>] do_munmap+0xd7/0xec
 kernel:  [<c013e9b7>] sys_munmap+0x39/0x54
 kernel:  [<c0102a1b>] sysenter_past_esp+0x54/0x75
 kernel: Code: 83 7c 24 18 00 89 14 24 75 19 89 e0 50 8d 44 24 1c 50 52 e8 df f9 ff ff 83 c4 0c 85 c0 0f 85 d1 00 00 00 8b 3c 24 31 c0 83 c9 ff <f2> ae f7 d1 49 8b 5c 24 18 89 ce 83 c3 34 e9 ac 00 00 00 50 ff

And then I had to reboot .

The adjuration to be "normal" seems shockingly repellent to me; I see neither
hope nor comfort in sinking to that low level.  I think it is ignorance that
makes people think of abnormality only with horror and allows them to remain
undismayed at the proximity of "normal" to average and mediocre.  For surely
anyone who achieves anything is, essentially, abnormal.
		-- Dr. Karl Menninger, "The Human Mind", 1930

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