kmem_map too small panics with Soekris/Atheros access point

[Stef Walter]

Boris Kochergin wrote:
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> More information: I upgraded it to a 7.2-STABLE with August 20th sources
> and increased kern.ipc.nmbclusters to 65536 in hopes of getting the
> panic less often. I managed to catch it in a state where there were a
> bunch of "ath0: ath_rx_proc: no mbuf!" messages in the kernel buffer.
> One line of "vmstat -m" stood out as the leak:
> 
> 80211node 12677 101401K       -   120901  16,512
> 
> "ifconfig ath0 down" freed the memory. Is there any other useful
> information I can provide if I catch it again? Someone suggested the
> output of "vmstat -z" off list, and I will have that next time.

This might be a long shot:

Back when I deployed some similar devices on FreeBSD 6.0 there was a
leak when using oddball ath_rate driver. I believe it went away when I
used ath_rate_sample. But according to 'man 4 ath' nothing else besides
ath_rate_sample exists anymore.

Cheers,

Stef