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Subject: Re: [PATCH wireless-3.1] iwlagn: sysfs couldn't find the priv
 pointer
From: "Guy, Wey-Yi" <wey-yi.w.guy@intel.com>
To: Daniel Halperin <dhalperi@cs.washington.edu>,
	emmanuel.grumbach@intel.com
Cc: "Grumbach, Emmanuel" <emmanuel.grumbach@intel.com>,
	"linville@tuxdriver.com" <linville@tuxdriver.com>,
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Date: Thu, 04 Aug 2011 16:15:02 -0700
Message-ID: <1312499702.15170.17.camel@wwguy-huron> (sfid-20110805_015335_485243_EC78CFBA)
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Emmanuel,

On Thu, 2011-08-04 at 13:55 -0700, Daniel Halperin wrote:
> I may have spoken too soon. I didn't try until today, and I get the
> following on remove module:
> 
> Aug  4 13:51:42 testbed11 kernel: [   45.321809] iwlwifi: connector
> callback deregistered
> Aug  4 13:51:42 testbed11 kernel: [   45.550202] *pde = 00000000
> Aug  4 13:51:42 testbed11 kernel: [   45.550249] Modules linked in:
> arc4 iwlagn(-) mac80211 cfg80211 i915 fbcon tileblit font bitblit
> softcursor drm_kms_helper drm i2c_algo_bit cfbcopyarea i2c_core
> intel_agp intel_gtt dcdbas loop video cfbimgblt cfbfillrect agpgart
> evdev sg sr_mod sd_mod cdrom usbhid hid e1000e ahci libahci uhci_hcd
> Aug  4 13:51:42 testbed11 kernel: [   45.550488]
> Aug  4 13:51:42 testbed11 kernel: [   45.550501] Pid: 1022, comm:
> rmmod Tainted: G        W   3.0.0-csitool+ #46 Dell Inc. Inspiron
> 530/0RY007
> Aug  4 13:51:42 testbed11 kernel: [   45.550558] EIP:
> 0060:[<c032cf08>] EFLAGS: 00010202 CPU: 0
> Aug  4 13:51:42 testbed11 kernel: [   45.550588] EIP is at
> pci_disable_msi+0x18/0x40
> Aug  4 13:51:42 testbed11 kernel: [   45.550613] EAX: 00000001 EBX:
> fddfe000 ECX: 000017db EDX: 000017da
> Aug  4 13:51:42 testbed11 kernel: [   45.550647] ESI: f3ec6350 EDI:
> f3ec6360 EBP: f4201e98 ESP: f4201e94
> Aug  4 13:51:42 testbed11 kernel: [   45.550680]  DS: 007b ES: 007b
> FS: 00d8 GS: 0033 SS: 0068
> Aug  4 13:51:42 testbed11 kernel: [   45.550760]  f3ec6340 f4201eac
> f85036af f4d53460 f4d53400 f4d53518 f4201ecc c0323394
> Aug  4 13:51:42 testbed11 kernel: [   45.550824]  f8516010 f8515fe0
> f4201ecc f4d53460 f8516010 f4d53494 f4201edc c039281b
> Aug  4 13:51:42 testbed11 kernel: [   45.550887]  f4d53460 f8516010
> f4201ef0 c03928f7 00000000 f8516010 c06167a0 f4201f04
> Aug  4 13:51:42 testbed11 kernel: [   45.550973]  [<f85036af>]
> iwl_pci_remove+0x27/0x7f [iwlagn]
> Aug  4 13:51:42 testbed11 kernel: [   45.551005]  [<c0323394>]
> pci_device_remove+0x44/0x100
> Aug  4 13:51:42 testbed11 kernel: [   45.551036]  [<c039281b>]
> __device_release_driver+0x5b/0xb0
> Aug  4 13:51:42 testbed11 kernel: [   45.551066]  [<c03928f7>]
> driver_detach+0x87/0x90
> Aug  4 13:51:42 testbed11 kernel: [   45.551093]  [<c0391b43>]
> bus_remove_driver+0x63/0xa0
> Aug  4 13:51:42 testbed11 kernel: [   45.551121]  [<c0392fa9>]
> driver_unregister+0x49/0x80
> Aug  4 13:51:42 testbed11 kernel: [   45.551150]  [<c0254a04>] ?
> sysfs_remove_file+0x14/0x20
> Aug  4 13:51:42 testbed11 kernel: [   45.551179]  [<c0323672>]
> pci_unregister_driver+0x32/0x80
> Aug  4 13:51:42 testbed11 kernel: [   45.551216]  [<f84f27e2>]
> iwl_pci_unregister_driver+0x12/0x20 [iwlagn]
> Aug  4 13:51:42 testbed11 kernel: [   45.551257]  [<f8503475>]
> iwl_exit+0xd/0x14 [iwlagn]
> Aug  4 13:51:42 testbed11 kernel: [   45.551286]  [<c01752d1>]
> sys_delete_module+0x121/0x1d0
> Aug  4 13:51:42 testbed11 kernel: [   45.551316]  [<c01e2052>] ?
> do_munmap+0x212/0x2a0
> Aug  4 13:51:42 testbed11 kernel: [   45.551344]  [<c04871cc>]
> sysenter_do_call+0x12/0x22
> Aug  4 13:51:42 testbed11 kernel: [   45.551726] ---[ end trace
> cdd7f97709a5fcfb ]---
> 
> 
Could you look into this, we need to fix it for 3.1

Thanks
Wey