[ath9k-devel] ath9k, compat-wireless-old: kernel panic

[Maxim Nikulin <nikulin@gorodok.net>]

Hi,

I try to get wifi working on my laptop, but the result is 'kernel 
panic'. The driver is ath9k from compat-wireless-old built for 2.6.24 
kernel. Is it supported yet?

Some details:

Commands to reproduce:
modprobe ath9k
rmmod ath9k

Kernel log:
> [  242.621288] ath9k: 0.1
> [  242.621343] ACPI: PCI Interrupt 0000:02:00.0[A] -> GSI 17 (level, low) -> IRQ 17
> [  242.621357] PCI: Setting latency timer of device 0000:02:00.0 to 64
> [  243.055928] phy0: Selected rate control algorithm 'ath9k_rate_control'
> [  243.176163] Registered led device: ath9k-phy0:radio
> [  243.176179] Registered led device: ath9k-phy0:assoc
> [  243.176193] Registered led device: ath9k-phy0:tx
> [  243.176208] Registered led device: ath9k-phy0:rx
> [  243.176600] phy0: Atheros 9280: mem=0xf8f00000, irq=17
> [  269.820518] BUG: unable to handle kernel NULL pointer dereference at virtual address 0000001c
> [  269.820625] printing eip: c02bcaa6 *pde = 00000000
> [  269.820746] Oops: 0000 [#1] SMP
> [  269.820863] Modules linked in: arc4 ecb blkcipher ath9k lbm_cw_mac80211 lbm_cw_cfg80211 nfs lockd nfs_acl sunrpc iptable_filter ip_tables x_tables aes_i586 dm_crypt dm_mod parport_pc lp parport loop joydev serio_raw snd_hda_intel psmouse snd_hwdep snd_pcm_oss pcspkr snd_pcm evdev snd_page_alloc snd_mixer_oss hci_usb bluetooth snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event iTCO_wdt iTCO_vendor_support snd_seq snd_timer snd_seq_device snd shpchp pci_hotplug soundcore battery video output ac asus_laptop led_class button intel_agp agpgart ext3 jbd mbcache usbhid hid sg sr_mod cdrom sd_mod ata_generic pata_acpi ata_piix libata scsi_mod r8169 ehci_hcd uhci_hcd usbcore thermal processor fan fbcon tileblit font bitblit softcursor fuse
> [  269.823948]
> [  269.823995] Pid: 4985, comm: rmmod Not tainted (2.6.24-22-generic #1)
> [  269.824050] EIP: 0060:[<c02bcaa6>] EFLAGS: 00010286 CPU: 0
> [  269.824106] EIP is at tcf_destroy+0x6/0x20
> [  269.824157] EAX: dfe6f084 EBX: dfe6f084 ECX: 00000292 EDX: 00000000
> [  269.824210] ESI: dfe6f080 EDI: dfe20180 EBP: f8fffebc ESP: dfda9e6c
> [  269.824264]  DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
> [  269.824317] Process rmmod (pid: 4985, ti=dfda8000 task=dfb8e5c0 task.ti=dfda8000)
> [  269.824372] Stack: 00000000 c02bcad0 dfe6f000 f8fa5eff dfe6f000 f8fc5820 dfe20180 c02bb37a
> [  269.824743]        df834800 dfe20180 c02bb3da 00000000 00000001 dfda9ea0 dfda9ea0 df834800
> [  269.825114]        c02a9ec9 f8f9b8d8 dfe25eb0 c031b908 dfe25e90 df834800 c02a9f78 dfe20180
> [  269.825485] Call Trace:
> [  269.825581]  [<c02bcad0>] tcf_destroy_chain+0x10/0x20
> [  269.825670]  [<f8fa5eff>] wme_qdiscop_destroy+0x2f/0x80 [lbm_cw_mac80211]
> [  269.825782]  [<c02bb37a>] qdisc_destroy+0x6a/0xa0
> [  269.825869]  [<c02bb3da>] dev_shutdown+0x2a/0x80
> [  269.825956]  [<c02a9ec9>] rollback_registered+0x99/0x140
> [  269.826044]  [<f8f9b8d8>] ieee80211_remove_interfaces+0x48/0x80 [lbm_cw_mac80211]
> [  269.826163]  [<c031b908>] down_write+0x8/0x20
> [  269.826250]  [<c02a9f78>] unregister_netdevice+0x8/0x50
> [  269.826338]  [<f8f8e720>] lbm_cw_ieee80211_unregister_hw+0x30/0xd0 [lbm_cw_mac80211]
> [  269.826456]  [<f8fdb038>] ath_detach+0x38/0x60 [ath9k]
> [  269.826555]  [<f8fdc661>] ath_pci_remove+0x31/0x60 [ath9k]
> [  269.826652]  [<c0227336>] pci_device_remove+0x16/0x40
> [  269.826740]  [<c0282744>] __device_release_driver+0x64/0xa0
> [  269.826830]  [<c0282c9b>] driver_detach+0xcb/0xd0
> [  269.826918]  [<c0282293>] bus_remove_driver+0x73/0xa0
> [  269.827006]  [<c022740e>] pci_unregister_driver+0xe/0x70
> [  269.827095]  [<f8fe636d>] exit_ath_pci+0xd/0x4a [ath9k]
> [  269.827191]  [<c01520e2>] sys_delete_module+0x112/0x190
> [  269.827280]  [<c031e38f>] do_page_fault+0x13f/0x730
> [  269.827368]  [<c0180450>] do_munmap+0x180/0x1f0
> [  269.827459]  [<c01043b2>] sysenter_past_esp+0x6b/0xa9
> [  269.827549]  [<c0310000>] unix_seqpacket_sendmsg+0x20/0x90
> [  269.827640]  =======================
> [  269.827689] Code: c5 74 ec 8b 4c 24 18 89 c2 89 d8 89 34 24 ff 17 89 ea 89 c6 89 d8 ff 57 10 eb b0 8d 76 00 8d bc 27 00 00 00 00 53 8b 50 20 89 c3 <ff> 52 1c 8b 43 20 8b 40 38 e8 6c 39 e9 ff 89 d8 5b e9 54 0f ed
> [  269.829983] EIP: [<c02bcaa6>] tcf_destroy+0x6/0x20 SS:ESP 0068:dfda9e6c

Versions info:
Ubuntu 8.04 hardy, 2.6.24-22-generic kernel
linux-image-2.6.24-22-generic
linux-backports-modules-2.6.24-22-generic

Device info:
> # lspci -vv -s 02:00
> 02:00.0 Network controller: Atheros Communications Inc. Unknown device 002a (rev 01)
>         Subsystem: Unknown device 1a3b:1067
>         Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B-
>         Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
>         Latency: 0, Cache Line Size: 32 bytes
>         Interrupt: pin A routed to IRQ 5
>         Region 0: Memory at fdef0000 (64-bit, non-prefetchable) [size=64K]
>         Capabilities: [40] Power Management version 2
>                 Flags: PMEClk- DSI- D1+ D2- AuxCurrent=375mA PME(D0+,D1+,D2-,D3hot+,D3cold-)
>                 Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>         Capabilities: [50] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 Enable-
>                 Address: 00000000  Data: 0000
>         Capabilities: [60] Express Legacy Endpoint IRQ 0
>                 Device: Supported: MaxPayload 128 bytes, PhantFunc 0, ExtTag-
>                 Device: Latency L0s <512ns, L1 <64us
>                 Device: AtnBtn- AtnInd- PwrInd-
>                 Device: Errors: Correctable- Non-Fatal- Fatal- Unsupported-
>                 Device: RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop-
>                 Device: MaxPayload 128 bytes, MaxReadReq 512 bytes
>                 Link: Supported Speed 2.5Gb/s, Width x1, ASPM unknown, Port 0
>                 Link: Latency L0s <512ns, L1 <64us
>                 Link: ASPM L1 Enabled RCB 128 bytes CommClk+ ExtSynch-
>                 Link: Speed 2.5Gb/s, Width x1
>         Capabilities: [90] MSI-X: Enable- Mask- TabSize=1
>                 Vector table: BAR=0 offset=00000000
>                 PBA: BAR=0 offset=00000000

ASUS F80L laptop with Intel(R) Core(TM)2 Duo CPU     T5450  @ 1.66GHz

The ath9k directory seems to be essentially the same for
compat-wireless-old-2008-10-18.tar.bz2
compat-wireless-old-2009-01-08.tar.bz2
linux-backports-modules-2.6.24-2.6.24

I found ubuntu bug https://bugs.edge.launchpad.net/ubuntu/+bug/272156 
and patch for it 
http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-intrepid.git;a=blobdiff;f=drivers/net/wireless/ath9k/core.h;h=88f4cc3cb8267243aeea999ec5e77c7d59f85508;hp=2f84093331ee79253e58f33ff59006392c54d891;hb=d20a41e5475ded4f2a94e280723c5049a198506b;hpb=8039aec6f6379db690b2ab8ce8fb4a2cd89b4f8a
but it doesn't fix my issue.

Thanks in advance.

-- 
Maxim Nikulin