Date: Wed, 4 Aug 2004 15:54:37 +0200 From: Simon Barner <barner@in.tum.de> To: Roberto Nunnari <roberto.nunnari@supsi.ch> Cc: freebsd-questions@freebsd.org Subject: Re: strange kernel messages.. Message-ID: <20040804135437.GA22118@zi025.glhnet.mhn.de> In-Reply-To: <4110E94D.2060803@supsi.ch> References: <4110E94D.2060803@supsi.ch>
next in thread | previous in thread | raw e-mail | index | archive | help
--y0ulUmNC+osPPQO6 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Roberto Nunnari wrote: > Hello. >=20 > Please send replies also to my mailbox, as I'm not on this list. >=20 > Can anybody tell me what are these messages about? Are them > just informational or do I have to worry? >=20 > Aug 2 18:23:59 web kernel: lock order reversal > Aug 2 18:23:59 web kernel: 1st 0xc07066e0 UMA lock (UMA lock) @=20 > /usr/src/sys/vm/uma_core.c:1200 > Aug 2 18:23:59 web kernel: 2nd 0xc0c31100 system map (system map) @=20 > /usr/src/sys/vm/vm_map.c:2210 > Aug 2 19:12:21 web kernel: lock order reversal > Aug 2 19:12:21 web kernel: 1st 0xc8c1c39c vm object (vm object) @=20 > /usr/src/sys/vm/swap_pager.c:1323 > Aug 2 19:12:21 web kernel: 2nd 0xc0705b80 swap_pager swhash (swap_pager= =20 > swhash) @ /usr/src/sys/vm/swap_pager.c:1838 > Aug 2 19:12:21 web kernel: 3rd 0xc6853108 vm object (vm object) @=20 > /usr/src/sys/vm/uma_core.c:873 This is a so-called lock order reversal (LOR). To learn more about LORs in general and specifically about the one you are seeing, please see here: http://sources.zabbadoz.net/freebsd/lor.html --> # 007 Simon --y0ulUmNC+osPPQO6 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (FreeBSD) iD8DBQFBEOqcCkn+/eutqCoRAk3jAKC9Knf0w5PG9nvYc6v8dBqs6+GiFQCfVA/k uIB9aRf77nrz9URAC4P9QwA= =zTZy -----END PGP SIGNATURE----- --y0ulUmNC+osPPQO6--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20040804135437.GA22118>