Well, I found it!
If I pass change `fsspace(".", &fsbuf);' to `fsspace("/", &fsbuf);' it
works, no oopses, and the messages are received without problems. I
will make some stress tests later.
So the remaining question is what "." in smtpd context mean? Is it the
dir postfix has been started from?
2011/3/5 Denis Shulyaka <shuly...@gmail.com>:
> Hi all,
>
> I have investigated the problem a little, and here are some results:
>
> First of all, it has nothing to do with memory consumption. The smtpd
> crashes on statfs() in fsspase() function, which is called from
> smtpd_check_queue() to check available free space on current
> filesystem for a queue.
>
> In the suggested System.map file the closest entry is 'alloc_page_buffers'.
>
> The default_process_limit, qmgr_message_active_limit and
> qmgr_message_recipient_limit tweaks have no effect at all.
>
> Any thoughts why statfs() may trigger a kernel oops?
>
>
> Best regards,
> Denis Shulyaka
