[Bug 179455] kernel oops while removing ath_pci on hardy

[lcampagn]

Public bug reported:

Binary package hint: linux-restricted-modules

Using kernel 2.6.24-2-generic on hardy, I get an oops when doing
"modprobe -r ath_pci". I also get numerous "sysctl table check failed"
messages related to ath, I'll post those if anybody wants to see them.
Oops follows:

[  667.065512] BUG: unable to handle kernel NULL pointer dereference at virtual address 0000005c
[  667.065519] printing eip: f8c2634d *pde = 00000000
[  667.065524] Oops: 0000 [#1] SMP
[  667.065527] Modules linked in: wlan_wep af_packet snd_rtctimer binfmt_misc rfcomm l2cap bluetooth i915 drm uinput ppdev ipv6 acpi_cpufreq cpufreq_conservative cpufreq_powersave cpufreq_ondemand cpufreq_userspace cpufreq_stats freq_table container bay sbs dock sbshc aes_i586 dm_crypt ndiswrapper joydev hdaps tp_smapi thinkpad_ec sr_mod cdrom sbp2 parport_pc lp parport snd_hda_intel snd_pcm_oss snd_pcm pcmcia wlan_scan_sta snd_mixer_oss snd_seq_dummy snd_seq_oss ath_rate_sample ac battery power_supply snd_seq_midi ath_pci wlan snd_rawmidi ath_hal(P) snd_seq_midi_event snd_seq snd_timer snd_seq_device serio_raw snd thinkpad_acpi sdhci psmouse irtty_sir nvram yenta_socket rsrc_nonstatic pcmcia_core button mmc_core sir_dev nsc_ircc soundcore evdev shpchp pci_hotplug intel_agp agpgart snd_page_alloc irda crc_ccitt iTCO_wdt iTCO_vendor_support ext3 jbd mbcache sg sd_mod ata_generic pata_acpi ahci ata_piix libata ohci1394 scsi_mod ieee1394 ehci_hcd uhci_hcd e1000 usbcore raid10 raid456 async_xor async_memcpy async_tx xor raid1 raid0 multipath linear md_mod dm_mirror dm_snapshot dm_mod thermal processor fan fuse
[  667.065605]
[  667.065608] Pid: 7053, comm: modprobe Tainted: P        (2.6.24-2-generic #1)
[  667.065611] EIP: 0060:[<f8c2634d>] EFLAGS: 00210246 CPU: 1
[  667.065630] EIP is at ieee80211_sysctl_vdetach+0x7d/0xd0 [wlan]
[  667.065633] EAX: 00000000 EBX: 00000000 ECX: dfb31400 EDX: dfb31200
[  667.065635] ESI: df9ef480 EDI: df9dc484 EBP: df9ef000 ESP: e85a9e7c
[  667.065638]  DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[  667.065641] Process modprobe (pid: 7053, ti=e85a8000 task=e853b540 task.ti=e85a8000)
[  667.065643] Stack: df9ef480 df9dc480 f8c0a63f 00000000 df9ef480 f7570000 df9dc480 f8d1cf97
[  667.065650]        c03f42f4 c030ca7f c03f42f4 c03f42f4 e853b540 df9dc000 f7570000 df9dc480
[  667.065656]        df9dc000 f7570000 f8d298dc f8c0a706 df9dc480 f8d16fc3 f7570000 00000000
[  667.065662] Call Trace:
[  667.065679]  [<f8c0a63f>] ieee80211_vap_detach+0x7f/0x130 [wlan]
[  667.065704]  [<f8d1cf97>] ath_vap_delete+0xf7/0x310 [ath_pci]
[  667.065719]  [<c030ca7f>] __mutex_lock_slowpath+0x5f/0xa0
[  667.065735]  [<f8c0a706>] ieee80211_ifdetach+0x16/0x60 [wlan]
[  667.065758]  [<f8d16fc3>] ath_detach+0x63/0x120 [ath_pci]
[  667.065772]  [<c030c3ec>] wait_for_common+0x1c/0x130
[  667.065782]  [<f8d21153>] ath_pci_remove+0x23/0x90 [ath_pci]
[  667.065796]  [<c021c476>] pci_device_remove+0x16/0x40
[  667.065806]  [<c02756a4>] __device_release_driver+0x64/0xa0
[  667.065815]  [<c0275bfb>] driver_detach+0xcb/0xd0
[  667.065822]  [<c02751f3>] bus_remove_driver+0x73/0xa0
[  667.065830]  [<c021c54e>] pci_unregister_driver+0xe/0x70
[  667.065840]  [<f8d215a2>] exit_ath_pci+0x12/0x2b [ath_pci]
[  667.065853]  [<c0152c72>] sys_delete_module+0x112/0x190
[  667.065865]  [<c0175e71>] remove_vma+0x41/0x50
[  667.065873]  [<c01769f0>] do_munmap+0x180/0x1f0
[  667.065888]  [<c01053a2>] sysenter_past_esp+0x6b/0xa9
[  667.065901]  [<c0300000>] unix_find_other+0x70/0x190
[  667.065913]  =======================
[  667.065914] Code: de 8b 86 a0 00 00 00 8b 15 b8 b9 c3 f8 8b 40 08 e8 09 b5 59 c7 83 3d b4 b9 c3 f8 01 74 44 83 2d b4 b9 c3 f8 01 8b 86 9c 00 00 00 <8b> 50 5c 85 d2 74 1a 89 d0 e8 35 da 55 c7 8b 86 9c 00 00 00 c7
[  667.065945] EIP: [<f8c2634d>] ieee80211_sysctl_vdetach+0x7d/0xd0 [wlan] SS:ESP 0068:e85a9e7c

** Affects: linux-meta (Ubuntu)
     Importance: Undecided
         Status: New

-- 
kernel oops while removing ath_pci on hardy
https://bugs.launchpad.net/bugs/179455
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