#4322 NORM Never A: Kernel crash while suspending

[Zarro Boogs per Child]

#4322: Kernel crash while suspending
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  Reporter:  wad     |       Owner:  dilinger      
      Type:  defect  |      Status:  new           
  Priority:  normal  |   Milestone:  Never Assigned
 Component:  kernel  |     Version:                
Resolution:          |    Keywords:                
  Verified:  0       |  
---------------------+------------------------------------------------------

Comment(by cjb):

 We hit this four times (three on one, once on another) overnight.  Here's
 the backtrace.

 {{{
 [    4.093536] Restarting tasks ... done.
 count: 4482[    4.233807] PM: Preparing system for mem sleep
 [    4.252468] Stopping tasks ... done.
 [    4.506805] ac97 0-0:AD1888: suspend
 [    4.523424] platform olpc-battery.0: suspend
 [    4.541083] platform dcon: suspend
 [    4.557862] OLPC-DCON 1-000d: suspend
 [    4.605815] olpc-dcon: The DCON has control
 [    4.623784] serio serio1: suspend
 [    4.640981] serio serio0: suspend
 [    4.657942] i8042 i8042: suspend
 [    4.674928] usb8xxx 1-1:1.0: suspend
 [    4.692325] usb 1-1: suspend
 [    4.711829] hub 2-0:1.0: suspend
 [    4.728829] usb usb2: suspend, may wakeup
 [    4.746841] hub 1-0:1.0: suspend
 [    4.764164] usb usb1: suspend, may wakeup
 [    4.783178] serial8250 serial8250: suspend
 [    4.801835] ehci_irq would set reclaim_ready with nothing to reclaim!
 [    4.823590] WARNING: at drivers/usb/host/ehci-hcd.c:645 ehci_irq()
 [    4.845563]  [<c055d0b0>] ehci_irq+0xac/0x1ae
 [    4.866068]  [<c054bfc8>] usb_hcd_irq+0x21/0x4d
 [    4.886841]  [<c043f42c>] handle_IRQ_event+0x1a/0x3f
 [    4.908324]  [<c0440680>] handle_level_irq+0x7a/0xbe
 [    4.929865]  [<c0440606>] handle_level_irq+0x0/0xbe
 [    4.951161]  [<c04053c0>] do_IRQ+0xaa/0xd6
 [    4.971610]  [<c0403eeb>] common_interrupt+0x23/0x28
 [    4.992908]  [<c0412e7f>] vprintk+0x295/0x2ec
 [    5.013847]  [<c054f248>] usb_external_suspend_device+0x1f1/0x1fb
 [    5.036905]  [<c0412ef1>] printk+0x1b/0x1f
 [    5.058139]  [<c0529427>] suspend_device+0x30d/0x376
 [    5.080292]  [<c040ec94>] sys_sched_yield+0x9c/0xa1
 [    5.102353]  [<c0529525>] device_suspend+0x95/0x164
 [    5.124564]  [<c0412ef1>] printk+0x1b/0x1f
 [    5.146229]  [<c043a155>] enter_state+0xd6/0x196
 [    5.168503]  [<c043a313>] state_store+0xc9/0xde
 [    5.190562]  [<c043a24a>] state_store+0x0/0xde
 [    5.212347]  [<c0498f53>] subsys_attr_store+0x27/0x2b
 [    5.234835]  [<c0499074>] sysfs_write_file+0xaf/0xd8
 [    5.257202]  [<c0498fc5>] sysfs_write_file+0x0/0xd8
 [    5.279291]  [<c045fc86>] vfs_write+0xa8/0x130
 [    5.300866]  [<c0460195>] sys_write+0x41/0x67
 [    5.322102]  [<c0403cfe>] sysenter_past_esp+0x5f/0x85
 [    5.344199]  =======================
 }}}

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Ticket URL: <https://dev.laptop.org/ticket/4322#comment:9>
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