Memory leak in net80211 on FBSD 6.0
nielsen-list at memberwebs.com
Wed Nov 30 02:50:32 GMT 2005
Nate Nielsen wrote:
> I'm experiencing a memory leak in the net80211 code. I have two atheros
> 5213-A cards on two embedded systems running FreeBSD 6.0. They are setup
> as IBSS (adhoc) stations. After roughly 15 seconds of ~14Mbps TCP
> traffic (single stream) I promptly run out of memory:
>>login: panic: kmem_malloc(4096): kmem_map too small: 25165824 total allocated
>>Cannot dump. No dump device defined.
>>Automatic reboot in 5 seconds - press a key on the console to abort
> The boxes have 64MB of memory each.
> vmstat -m reports the following just before the panic:
>> Type InUse MemUse HighUse Requests Size(s)
>> 80211node 20554 20554K - 20559 512,1024
I've put debugging code in node_alloc() and node_free() (in
net80211/ieee80211_node.c) and can confirm that thousands of
ieee80211_node structures are being allocated, at a cost of 1K a piece.
I'll continue to look into this (stumbling about), but if anyone has any
advice or ideas of where to look, I'd be eternally grateful.
More information about the freebsd-hackers