#10174 NORM Opportu: usbhid error unplugging a device

[Zarro Boogs per Child]

#10174: usbhid error unplugging a device
--------------------------------+-------------------------------------------
           Reporter:  dmoco     |       Owner:  cjb          
               Type:  defect    |      Status:  assigned     
           Priority:  normal    |   Milestone:  Opportunity  
          Component:  kernel    |     Version:  not specified
         Resolution:            |    Keywords:               
        Next_action:  diagnose  |    Verified:  0            
Deployment_affected:            |   Blockedby:               
           Blocking:            |  
--------------------------------+-------------------------------------------

Comment(by dmoco):

 Crash unplugging on the XO-1.5:

 {{{
 [  487.250160] usb 2-1: USB disconnect, address 2
 [  487.371333] BUG: unable to handle kernel paging request at 6b6b6b6b
 [  487.378075] IP: [<b0682b13>] hiddev_ioctl+0x28/0x591
 [  487.380012] *pde = 00000000
 [  487.380012] Oops: 0000 [#1] PREEMPT
 [  487.380012] last sysfs file: /sys/devices/platform/dcon/backlight/dcon-
 bl/brightness
 [  487.380012] Modules linked in: fuse uinput via_camera
 videobuf_dma_contig videobuf_core mousedev serio_raw psmouse libertas_sdio
 libertas lib80211 [last unloaded: scsi_wait_scan]
 [  487.380012]
 [  487.380012] Pid: 2603, comm: squeak Tainted: G        W
 (2.6.31_xo1.5-20091211.1040.1.olpc.34cf14d #1) XO
 [  487.380012] EIP: 0060:[<b0682b13>] EFLAGS: 00210296 CPU: 0
 [  487.380012] EIP is at hiddev_ioctl+0x28/0x591
 [  487.380012] EAX: 6b6b6b6b EBX: ea3ce000 ECX: e9da65f0 EDX: c018480d
 [  487.380012] ESI: c018480d EDI: ea096550 EBP: e9d70f00 ESP: e9d70e78
 [  487.380012]  DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068
 [  487.380012] Process squeak (pid: 2603, ti=e9d70000 task=e9940580
 task.ti=e9d70000)
 [  487.380012] Stack:
 [  487.380012]  00001000 e6309048 afdd1488 e9d70e10 e9d70e8c 00000000
 00000000 e9d70f4c
 [  487.380012] <0> 00000001 00000000 00000000 00000040 e9d70ec8 b0793180
 e9cef970 e9d70f90
 [  487.380012] <0> e9d70f60 b049018a 00000000 00000000 00000018 00000071
 00000000 00000001
 [  487.380012] Call Trace:
 [  487.380012]  [<b049018a>] ? do_sync_read+0xaf/0xea
 [  487.380012]  [<b0682aeb>] ? hiddev_ioctl+0x0/0x591
 [  487.380012]  [<b049b39a>] ? vfs_ioctl+0x1d/0x76
 [  487.380012]  [<b049b9ac>] ? do_vfs_ioctl+0x4f9/0x537
 [  487.380012]  [<b055c2a1>] ? security_file_permission+0x14/0x16
 [  487.380012]  [<b049025f>] ? rw_verify_area+0x9a/0xbb
 [  487.380012]  [<b0439958>] ? getnstimeofday+0x53/0xd7
 [  487.380012]  [<b057f595>] ? copy_to_user+0x39/0x64
 [  487.380012]  [<b049ba30>] ? sys_ioctl+0x46/0x66
 [  487.380012]  [<b0402934>] ? sysenter_do_call+0x12/0x26
 [  487.380012] Code: 5f 5d c3 55 89 e5 57 56 53 83 ec 7c 0f 1f 44 00 00 89
 4d 80 8b 88 84 00 00 00 89 d6 8b b9 10 06 00 00 8b 5f 3c 8b 83 54 0c 00 00
 <8b> 10 8b 83 4c 0e 00 00 89 85 7c ff ff ff b8 fb ff ff ff 83 3f
 [  487.380012] EIP: [<b0682b13>] hiddev_ioctl+0x28/0x591 SS:ESP
 0068:e9d70e78
 [  487.380012] CR2: 000000006b6b6b6b
 [  487.586306] ---[ end trace 8748f2ea1c17da70 ]---

 }}}

-- 
Ticket URL: <http://dev.laptop.org/ticket/10174#comment:10>
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