Date: Wed, 30 Nov 2005 03:04:44 +0000 (GMT) From: Nate Nielsen <nielsen-list@memberwebs.com> To: freebsd-hackers@freebsd.org, freebsd-net@freebsd.org, freebsd-current@freebsd.org Subject: Re: Memory leak in net80211 on FBSD 6.0 Message-ID: <438D0896.1070808@memberwebs.com> In-Reply-To: <438CE0A8.4010205@memberwebs.com>
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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 >>Uptime: 3m0s >>Cannot dump. No dump device defined. >>Automatic reboot in 5 seconds - press a key on the console to abort >>Rebooting... > > The boxes have 64MB of memory each. > vmstat -m reports the following just before the panic: > >> Type InUse MemUse HighUse Requests Size(s) >><snip> >> 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. Cheers, Natehome | help
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