Re: kernel BUG at mm/rmap.c:480 in 2.6.10-rc3-bk7

[Greg KH]

On Tue, Dec 14, 2004 at 11:26:48PM +0000, Hugh Dickins wrote:
> One case that's easy to explain: if it was preceded (perhaps hours
> earlier) by a "Bad page state" message and stacktrace, referring to
> the same page (in ecx, edx, ebp in your dump), which showed non-zero
> mapcount, then this is an after-effect of bad_page resetting mapcount.
> And the real problem was probably a double free, which bad_page noted,
> but carried on regardless.  Worth checking your logs for, let us know,
> but there have been several reports where that's definitely not so.

Nope, nothing like that in my logs, sorry.

> I presume this was just a one-off?  If you can repeat it from time to
> time, I'll try to devise some printk'ing to shed more light.

I'll try to see if I can reproduce it.  If so, I'll let you know.

thanks,

greg k-h
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