Bug#610323: Intermittent Hibernate Failure

[Jonathan Nieder <jrnieder@gmail.com>]

Hi Zachary,

Zachary Palmer wrote:

> On occasion, hibernating my laptop will result in a kernel bug report.  This
> appears to occur more often when I perform operations such as unplugging the
> power while the laptop is hibernating; it also appears to occur more often if
> a large amount of I/O is occurring when hibernation begins.
>
> The problem appears to be with the hibernation system attemting to free a
> page frame that is not allocated.  The actual line on which BUG_ON is invoked
> is in memory_bm_clear_bit of /kernel/power/snapshot.c.  It is doing this in
> response to the -EFAULT value returned by memory_bm_find_bit in the same file.

Thanks for a clear report and sorry for the very slow response.
Before delving further into this:

 - do you still have access to this hardware?
 - what kernel do you use these days?  does it still have trouble
   hibernating?
 - any new observations collected since this report?  any workarounds
   or more reliable reproduction recipes?

Hope that helps,
Jonathan