Date: Mon, 30 Jan 2017 10:05:11 +0100 From: Dave Cottlehuber <dch@skunkwerks.at> To: freebsd-wireless@freebsd.org Subject: ifconfig(8) consumes all RAM when rtwn is present Message-ID: <1485767111.2677905.863819712.63FF232E@webmail.messagingengine.com>
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When the rtwn adapter is plugged in, ifconfig consumes all available RAM, whether at boot, or later on from a "clean" boot: dmesg[1] snippet at point where edimax wifi adapter [2] is plugged in: ugen0.3: <vendor 0x7392 product 0x7811> at usbus0 rtwn0 on uhub0 rtwn0: <vendor 0x7392 product 0x7811, class 0/0, rev 2.00/2.00, addr 7> on usbus0 rtwn0: MAC/BB RTL8188CUS, RF 6052 1T1R wlan0: Ethernet address: 74:da:38:7e:e6:e0 swap_pager: out of swap space swap_pager_getswapspace(16): failed pid 62971 (ifconfig), uid 0, was killed: out of swap space pid 57669 (unbound), uid 59, was killed: out of swap space swap_pager: out of swap space swap_pager_getswapspace(16): failed This also occurs at boot[3]: info via top: Mem: 13G active, 28K inactive, 2208M Laundry, 471M Wired, 1584K Buf, 61M free ARC: 86M Total, 564K MFU, 81M MRU, 148K Anon, 960 Header, 3181K Other Swap: 4056M Total, 4056M Used, K Free, 100% Inuse top's ifconfig line: SIZE: 98323M RES: 4061M SWAP: 0K - h/w is a macbook pro 15" retina, 16GiB RAM, normally I run swap-less but atm 4GiB swap configured to catch this error - built from the drm-next branch https://github.com/FreeBSDDesktop/freebsd-base-graphics/commit/a86fc44 from 2017/01/28 - 100% reproducible on every boot and every time EW-7811UN is inserted If I remove the rtwn USB-based thumb NIC then this doesn't happen. [1]: https://gist.github.com/dch/e7b01cdcc0bbfd57b2899999e1e5fdd2 [2]: https://www.alternate.co.uk/Edimax/EW-7811Un-WLAN-Adapter/html/product/154657? [3]: https://usercontent.irccloud-cdn.com/file/ylyhzEWq/1485762701.JPG I will try latest FreeBSD -current today, in case there's any difference in behaviour from the FreeBSDDesktop branch I am currently using. A+ Dave
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