#2943 NORM Untriag: Kernel oops when pressing Ctrl-C while resuming

[Zarro Boogs per Child]

#2943: Kernel oops when pressing Ctrl-C while resuming
-----------------------+----------------------------------------------------
  Reporter:  jcardona  |       Owner:  dilinger 
      Type:  defect    |      Status:  new      
  Priority:  normal    |   Milestone:  Untriaged
 Component:  kernel    |     Version:           
Resolution:            |    Keywords:           
  Verified:  0         |  
-----------------------+----------------------------------------------------

Comment(by dilinger):

 I've spent the last few days working on this.  The backtrace I chose to
 use is the following:

 {{{
 [    1.169987] BUG: unable to handle kernel NULL pointer dereference at
 virtual address 00000000
 [    1.178695]  printing eip:
 [    1.181413] 00000000
 [    1.183727] *pde = 00000000
 [    1.186542] Oops: 0000 [#1]
 [    1.189350] PREEMPT
 [    1.191580] Modules linked in: i2c_dev asix usbnet mii usb8xxx libertas
 ieee80211 ieee80211_crypt cs5535_gpio mousedev
 [    1.202568] CPU:    0
 [    1.202576] EIP:    0060:[<00000000>]    Not tainted VLI
 [    1.202587] EFLAGS: 00010286   (2.6.22-20071026.14.olpc.3c8735bae963d5e
 #2)
 [    1.217159] EIP is at _stext+0x3fbff000/0x14
 [    1.221450] eax: 00000004   ebx: 00000000   ecx: c895a000   edx:
 10000000
 [    1.228252] esi: 00000000   edi: 00000000   ebp: 00000000   esp:
 c895ae3c
 [    1.235055] ds: 0068   es: 007b   fs: 0000  gs: 0033  ss: 0068
 [    1.240906] Process bash (pid: 2472[#0], ti=c895a000 task=c9233030
 task.ti=c895a000)
 [    1.248486] Stack: 00000000 00000000 00000000 00000000 00000000
 00000000 00000000 00000000
 [    1.257058]        00000000 00000000 00000000 00000000 00000000
 00000000 00000000 00000000
 [    1.265634]        00000000 00000000 00000000 00000000 00000000
 00000000 00000000 00000000
 [    1.274212] Call Trace:
 [    1.276886]  [<c054ef60>] usb_resume_interface+0x5f/0xd5
 [    1.282261]  [<c0412f29>] printk+0x1b/0x1f
 [    1.286418]  [<c05297b0>] resume_device+0xb6/0x171
 [    1.291257]  [<c05298dd>] dpm_resume+0x72/0xc3
 [    1.295749]  [<c0529964>] device_resume+0x36/0x4a
 [    1.300495]  [<c043a204>] enter_state+0x14d/0x196
 [    1.305255]  [<c043a34b>] state_store+0xc9/0xde
 [    1.309829]  [<c043a282>] state_store+0x0/0xde
 [    1.314318]  [<c0498fcb>] subsys_attr_store+0x27/0x2b
 [    1.319421]  [<c04990ec>] sysfs_write_file+0xaf/0xd8
 [    1.324430]  [<c049903d>] sysfs_write_file+0x0/0xd8
 [    1.329351]  [<c045fcbe>] vfs_write+0xa8/0x130
 [    1.333843]  [<c04601cd>] sys_write+0x41/0x67
 [    1.338251]  [<c0403d92>] sysenter_past_esp+0x5f/0x85
 [    1.343349]  [<c0620000>] tcp_v6_rcv+0x587/0x6ef
 [    1.348018]  =======================
 [    1.351607] Code: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ff ff ff ff ff ff ff ff ff fa fc e9 33 fc 00 00 00 08 00 00 00 02 00 ff ff
 Bad EIP value.
 [    1.367311] History: SEQ:        1   NR_CPUS: 1
 [    1.371679] (#0001,*0):c040476b oops
 [    1.375360] EIP: [<00000000>] _stext+0x3fbff000/0x14 SS:ESP
 0068:c895ae3c
 }}}

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Ticket URL: <https://dev.laptop.org/ticket/2943#comment:5>
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