Re: BUG at rmap.c:212

Rik van Riel (riel@conectiva.com.br)
Wed, 31 Jul 2002 09:49:46 -0300 (BRT)


On Wed, 31 Jul 2002, Petr Vandrovec wrote:

> yesterday I told (in IDE thread) that BUG at rmap.c:212 is probably
> already fixed by changeset 520. Unfortunately, it is not, I got it again
> with BK tree. It happened again when 'ntpd' called exit() upon receiving
> sigterm.

Line 212 is 'pte_chain_unlock(page);' right ?

What configuration are you running ? SMP ? PREEMPT ? What compiler ?

> Stack trace:
>
> page_remove_rmap
> zap_pte_range
> zap_pmd_range
> unmap_page_range
> exit_mmap
> mmput
> do_exit
> sys_exit
> syscall_call
>
> If it is not known bug, I'll rebuild kernel with DEBUG_RMAP.
> Unfortunately it looks like that machine must have uptime > 12hrs to
> trigger this. Probably updatedb or some other task must be run to try to
> swap ntpd out?

It is not a known bug. In fact I've never seen this one before.

kind regards,

Rik

-- 
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