Date: Fri, 22 Jun 2001 11:30:01 -0700 (PDT) From: John Baldwin <jhb@FreeBSD.org> To: Makoto MATSUSHITA <matusita@jp.FreeBSD.org> Cc: current@FreeBSD.org Subject: Re: lock order reversal Message-ID: <XFMail.010622113001.jhb@FreeBSD.org> In-Reply-To: <20010623031738P.matusita@jp.FreeBSD.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On 22-Jun-01 Makoto MATSUSHITA wrote: > > jhb> Can you turn on WITNESS_DDB in your kenrel config file (or set > jhb> the debug.witness_ddb loader tunable/sysctl before you get this > jhb> reversal) and get a backtrace from ddb? > > Yes; I turned 'debug.witness_ddb' on now. I'll send a ddb 'trace' > output if next time lock-order-reversal is happen. You will have to reboot for it to fire. We only report the first lock order found between two locks to avoid flooding the console. -- John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/ PGP Key: http://www.baldwin.cx/~john/pgpkey.asc "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?XFMail.010622113001.jhb>