Hello! Original bug report to ubuntu bugs: https://bugs.launchpad.net/bugs/339496 This is regression from 2 weeks old driver that worked relatively stable. Driver only sometimes went "mad" and required cold reboot because card couldn't be reseted. That version was also compiled by me. I have now tested the latest compat-wireless-2009-03-10 (v2.6.29-rc7-17107-g075d535) with same 2.6.28 kernel and I still gt same null point reference. uname -a Linux haukka 2.6.28-8-generic #28-Ubuntu SMP Fri Mar 6 00:09:20 UTC 2009 x86_64 GNU/Linux Wireless card info: 04:00.0 Ethernet controller [0200]: Atheros Communications Inc. AR242x 802.11abg Wireless PCI Express Adapter [168c:001c] (rev 01) Subsystem: AMBIT Microsystem Corp. Device [1468:0428] Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 32 bytes Interrupt: pin A routed to IRQ 17 Region 0: Memory at c0200000 (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 (v1) Legacy Endpoint, MSI 00 DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <512ns, L1 <64us ExtTag- AttnBtn- AttnInd- PwrInd- RBE- FLReset- DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported- RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop- MaxPayload 128 bytes, MaxReadReq 512 bytes DevSta: CorrErr- UncorrErr+ FatalErr- UnsuppReq+ AuxPwr- TransPend- LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0 <512ns, L1 <64us ClockPM- Suprise- LLActRep- BwNot- LnkCtl: ASPM Disabled; RCB 128 bytes Disabled- Retrain- CommClk+ ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt- Capabilities: [90] MSI-X: Enable- Mask- TabSize=1 Vector table: BAR=0 offset=00000000 PBA: BAR=0 offset=00000000 Capabilities: [100] Advanced Error Reporting <?> Capabilities: [140] Virtual Channel <?> Kernel driver in use: ath5k Kernel modules: ath5k relevant part of dmesg the latest dmesg follows: [ 18.793135] cfg80211: Using static regulatory domain info [ 18.793140] cfg80211: Regulatory domain: EU [ 18.793142] (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) [ 18.793145] (2402000 KHz - 2482000 KHz @ 40000 KHz), (600 mBi, 2000 mBm) [ 18.793148] (5170000 KHz - 5190000 KHz @ 40000 KHz), (600 mBi, 2300 mBm) [ 18.793151] (5190000 KHz - 5210000 KHz @ 40000 KHz), (600 mBi, 2300 mBm) [ 18.793154] (5210000 KHz - 5230000 KHz @ 40000 KHz), (600 mBi, 2300 mBm) [ 18.793156] (5230000 KHz - 5330000 KHz @ 40000 KHz), (600 mBi, 2000 mBm) [ 18.793159] (5490000 KHz - 5710000 KHz @ 40000 KHz), (600 mBi, 3000 mBm) [ 18.839094] cfg80211: exports duplicate symbol cfg80211_wext_giwrange (owned by lbm_cw_cfg80211) [ 18.874052] ath5k 0000:04:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17 [ 18.874066] ath5k 0000:04:00.0: setting latency timer to 64 [ 18.874160] ath5k 0000:04:00.0: registered as 'phy0' [ 18.942832] BUG: unable to handle kernel NULL pointer dereference at 0000000000000004 [ 18.942836] IP: [<ffffffffa02c91d5>] wiphy_update_regulatory+0x2c5/0x460 [lbm_cw_cfg80211] [ 18.942851] PGD 3f11e067 PUD 3d0ea067 PMD 0 [ 18.942855] Oops: 0000 [#1] SMP [ 18.942859] last sysfs file: /sys/devices/platform/i8042/modalias [ 18.942863] Dumping ftrace buffer: [ 18.942865] (ftrace buffer empty) [ 18.942867] CPU 1 [ 18.942870] Modules linked in: ath5k(+) lbm_cw_mac80211 lbm_cw_cfg80211 parport_pc lp parport snd_hda_intel snd_pcm_oss snd_mixer_oss snd_pcm pcmcia snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device acer_wmi joydev uvcvideo led_class yenta_socket rsrc_nonstatic snd psmouse pcspkr sdhci_pci compat_ioctl32 serio_raw sdhci pcmcia_core videodev k8temp soundcore v4l1_compat snd_page_alloc i2c_piix4 usbhid video output shpchp 8139cp 8139too mii ehci_hcd ohci_hcd fbcon tileblit font bitblit softcursor [ 18.942913] Pid: 2532, comm: modprobe Not tainted 2.6.28-8-generic #28-Ubuntu [ 18.942916] RIP: 0010:[<ffffffffa02c91d5>] [<ffffffffa02c91d5>] wiphy_update_regulatory+0x2c5/0x460 [lbm_cw_cfg80211] [ 18.942926] RSP: 0018:ffff88003f041a68 EFLAGS: 00010246 [ 18.942929] RAX: 0000000000000000 RBX: 00000000000000c6 RCX: 0000000000000090 [ 18.942931] RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff88003d0d80a0 [ 18.942934] RBP: ffff88003f041ab8 R08: 000000000000000c R09: 0000000000000002 [ 18.942937] R10: 0000000000000000 R11: 000000003e170500 R12: ffff88003d0d80a0 [ 18.942940] R13: ffff88003d0d8000 R14: ffff88003d0d8360 R15: ffff88003d0d80a0 [ 18.942943] FS: 00007f5f8a6cf6f0(0000) GS:ffff88003f806a00(0000) knlGS:0000000000000000 [ 18.942946] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 18.942948] CR2: 0000000000000004 CR3: 000000003d513000 CR4: 00000000000006a0 [ 18.942951] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 18.942954] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 18.942958] Process modprobe (pid: 2532, threadinfo ffff88003f040000, task ffff88003cd45980) [ 18.942960] Stack: [ 18.942962] ffff88003f041ba8 ffff88003d8f3000 ffff88003f041a88 ffffffff8041f2de [ 18.942967] ffff88003f041ab8 00000000000000c6 ffff88003d0d80a0 ffff88003d0d8000 [ 18.942973] ffff88003d0d8360 ffff88003d0d9420 ffff88003f041ae8 ffffffffa02c750a [ 18.942978] Call Trace: [ 18.942981] [<ffffffff8041f2de>] ? __const_udelay+0x4e/0x50 [ 18.942989] [<ffffffffa02c750a>] lbm_cw_wiphy_register+0x17a/0x210 [lbm_cw_cfg80211] [ 18.942998] [<ffffffffa02f1276>] lbm_cw_ieee80211_register_hw+0xb6/0x440 [lbm_cw_mac80211] [ 18.943019] [<ffffffffa0342995>] ath5k_pci_probe+0x10b5/0x148a [ath5k] [ 18.943028] [<ffffffff8041872a>] ? kobject_get+0x1a/0x30 [ 18.943035] [<ffffffff80430a1c>] pci_device_probe+0x7c/0xa0 [ 18.943042] [<ffffffff804b9a7d>] really_probe+0x6d/0x1a0 [ 18.943048] [<ffffffff804b9bfb>] driver_probe_device+0x4b/0x60 [ 18.943052] [<ffffffff804b9cab>] __driver_attach+0x9b/0xa0 [ 18.943056] [<ffffffff804b9c10>] ? __driver_attach+0x0/0xa0 [ 18.943059] [<ffffffff804b925b>] bus_for_each_dev+0x6b/0xa0 [ 18.943063] [<ffffffffa0079000>] ? init_ath5k_pci+0x0/0x42 [ath5k] [ 18.943071] [<ffffffff804b98fc>] driver_attach+0x1c/0x20 [ 18.943074] [<ffffffff804b8af8>] bus_add_driver+0x1f8/0x270 [ 18.943078] [<ffffffffa0079000>] ? init_ath5k_pci+0x0/0x42 [ath5k] [ 18.943086] [<ffffffff804b9e90>] driver_register+0x70/0x160 [ 18.943090] [<ffffffffa0079000>] ? init_ath5k_pci+0x0/0x42 [ath5k] [ 18.943099] [<ffffffff80430cfd>] __pci_register_driver+0x6d/0xc0 [ 18.943104] [<ffffffffa0079000>] ? init_ath5k_pci+0x0/0x42 [ath5k] [ 18.943111] [<ffffffffa0079023>] init_ath5k_pci+0x23/0x42 [ath5k] [ 18.943118] [<ffffffff8020a03b>] do_one_initcall+0x3b/0x170 [ 18.943123] [<ffffffff802d028d>] ? __vunmap+0xcd/0x120 [ 18.943129] [<ffffffff802d0335>] ? vfree+0x25/0x30 [ 18.943132] [<ffffffff8027eec8>] ? load_module+0x11c8/0x11d0 [ 18.943141] [<ffffffff8027ef7d>] sys_init_module+0xad/0x1e0 [ 18.943145] [<ffffffff8021253a>] system_call_fastpath+0x16/0x1b [ 18.943149] Code: 30 75 06 80 78 05 30 74 37 49 8b 47 38 48 85 c0 66 0f 1f 44 00 00 74 0c 80 78 04 30 66 90 0f 84 57 01 00 00 48 8b 05 c3 0d 01 00 <83> 78 04 04 0f 84 d1 00 00 00 41 80 7f 08 00 0f 84 c6 00 00 00 [ 18.943184] RIP [<ffffffffa02c91d5>] wiphy_update_regulatory+0x2c5/0x460 [lbm_cw_cfg80211] [ 18.943193] RSP <ffff88003f041a68> [ 18.943195] CR2: 0000000000000004 [ 18.943198] ---[ end trace 4540bc7bf8fd4a5f ]--- Pauli -- 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
