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Re: modprobe fail and subsequent crash on rmmod ath9k D-Link DWA 652

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Nothing new on this just yet.

Tonight I will try 2.6.32-2 to see if that fixes the problem.  Does
anyone have any debugging steps I can try?

On Sat, Dec 19, 2009 at 10:27 AM, Russ Adams <russ.adams@xxxxxxxxx> wrote:
> Hello all,
>
> Environment:
>
> I'm running 2.6.32 with a set of patches provided by Arch Linux:
> ftp://ftp.archlinux.org/other/kernel26/patch-2.6.32.1-1-ARCH.bz2.  The
> patches appear mostly cosmetic, with some changes applied to ext4.
>
> Hardware:
>
> I have a D-Link DWA 652 which reports as an AR5008 in lspci -vnn.  The
> card is functional in kernel 2.6.28. (I'm using it to post this email)
>
> The ath9k list indicated that the problem in rmmod may be in the
> mac80211b module.
>
> Here's the sequence of events:
>
> % sudo modprobe ath9k # no pertinent dmesg output
>
> % iwconfig # wlan0 not present
> lo        no wireless extensions.
>
> eth0      no wireless extensions.
>
> % sudo rmmod ath9k # not sure why it's telling me "Killed" here
> Killed
>
> % dmesg | less
> ...
> ...
> BUG: unable to handle kernel NULL pointer dereference at 0000000c
> IP: [<c116de6a>] kref_put+0x1a/0x60
> *pde = 00000000
> Oops: 0002 [#1] PREEMPT SMP
> last sysfs file:
> /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0/energy_full
> Modules linked in: ipv6 fan nls_cp437 hid_microsoft vfat fat
> snd_seq_dummy firewire_ohci mmc_block snd_seq_oss firewire_core
> snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss sdhci_pci
> snd_intel8x0 radeon snd_intel8x0m crc_itu_t ttm snd_ac97_codec sdhci
> drm_kms_helper snd_pcm drm i2c_algo_bit snd_timer intel_agp
> snd_mixer_oss video snd ac97_bus joydev iTCO_wdt i2c_core
> iTCO_vendor_support soundcore shpchp output dell_laptop ac battery
> button psmouse snd_page_alloc agpgart pci_hotplug processor thermal
> dcdbas serio_raw evdev usbhid pcspkr sg hid rtc_cmos rtc_core rtc_lib
> ext3 jbd mbcache ath9k(-) mac80211 ath cfg80211 rfkill led_class b44
> ssb mmc_core pcmcia ipw2100 yenta_socket rsrc_nonstatic libipw
> uhci_hcd mii lib80211 pcmcia_core sr_mod sd_mod cdrom ehci_hcd usbcore
> ata_piix ata_generic pata_acpi libata scsi_mod
>
> Pid: 2089, comm: rmmod Tainted: G        W  (2.6.32-ARCH #1) Inspiron
> 9200
> EIP: 0060:[<c116de6a>] EFLAGS: 00010202 CPU: 0
> EIP is at kref_put+0x1a/0x60
> EAX: 0000000c EBX: 0000000c ECX: f70ce360 EDX: f8444410
> ESI: f8444410 EDI: f732108c EBP: f70ce260 ESP: f559fec4
>  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
> Process rmmod (pid: 2089, ti=f559e000 task=f54edd50 task.ti=f559e000)
> Stack:
>  f70ce260 f84ef8b0 f843814d f70cea54 f70cea54 f70cea54 f84cc40d f70cea54
> <0> f84ef8b0 f732108c f84ef8e4 f84cc4d8 f7321000 c11832f6 f7321058 c11f631d
> <0> f7321058 f84ef8b0 c11f6407 f84ef880 f84ef8b0 c13c4c80 c11f55eb f84ef880
> Call Trace:
>  [<f843814d>] ? ieee80211_unregister_hw+0x5d/0xd0 [mac80211]
>  [<f84cc40d>] ? ath_detach+0x5d/0x120 [ath9k]
>  [<f84cc4d8>] ? ath_cleanup+0x8/0x30 [ath9k]
>  [<c11832f6>] ? pci_device_remove+0x16/0x40
>  [<c11f631d>] ? __device_release_driver+0x4d/0xb0
>  [<c11f6407>] ? driver_detach+0x87/0x90
>  [<c11f55eb>] ? bus_remove_driver+0x5b/0xa0
>  [<c118353b>] ? pci_unregister_driver+0x2b/0x80
>  [<f84d431c>] ? ath9k_exit+0x8/0x31 [ath9k]
>  [<c1070ef0>] ? sys_delete_module+0x190/0x240
>  [<c10c6b47>] ? remove_vma+0x37/0x50
>  [<c1025a92>] ? do_page_fault+0x102/0x300
>  [<c1003913>] ? sysenter_do_call+0x12/0x28
> Code: 00 c7 00 01 00 00 00 0f ae f0 89 f6 c3 8d 74 26 00 83 ec 08 85
> d2 89 1c 24 89 c3 89 74 24 04 89 d6 74 39 81 fa a0 86 0d c1 74 20 <3e>
> ff 0b 0f 94 c2 31 c0 84 d2 74 09 89 d8 ff d6 b8 01 00 00 00
> EIP: [<c116de6a>] kref_put+0x1a/0x60 SS:ESP 0068:f559fec4
> CR2: 000000000000000c
> ---[ end trace a7919e7f17c0a727 ]---
>
> Please advise.  Thank you!
>
> Russ Adams
>
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