Date: Tue, 29 Nov 2005 19:20:57 -0800 From: Sam Leffler <sam@errno.com> To: nielsen@memberwebs.com Cc: freebsd-net@freebsd.org Subject: Re: Memory leak in net80211 on FBSD 6.0 Message-ID: <438D1A99.6000803@errno.com> In-Reply-To: <438D0896.1070808@memberwebs.com> References: <438CE0A8.4010205@memberwebs.com> <438D0896.1070808@memberwebs.com>
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Nate Nielsen wrote: > 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. Please don't spam lots of groups. I'm aware of the leak (David Young found it in netbsd) and have a partial fix. I'll send it to you directly. Sam
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