Date: Fri, 29 Apr 2011 12:53:56 +0000 (UTC) From: "Helmut Schneider" <jumper99@gmx.de> To: freebsd-stable@freebsd.org Subject: Re: panic, but /var/crash ist empty Message-ID: <xn0hdg0cc19g1q002@news.gmane.org> References: <xn0hddgg85vuklg008@news.gmane.org> <BANLkTimfc4usSHCJWXx5E1oGo9sMziM8Lw@mail.gmail.com>
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Brandon Gooch wrote: > On Wed, Apr 27, 2011 at 1:44 PM, Helmut Schneider <jumper99@gmx.de> > wrote: > > What can I do to create a backtrace to open a PR? > > To get a backtrace from the crash (or drop to the debugger), you'll > need to compile a kernel with at least a couple of options defined. > These two: > > options KDB > options DDB > > ...will allow you to work with the debugger on the console after a > crash. > > Further, with the option KDB_TRACE in the kernel config, you'll get a > backtrace printed automatically when the kernel panicsb. > > Here are a couple of excellent documents to read to get you started: > > http://www.freebsd.org/doc/en/books/handbook/kernelconfig-building.html > http://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug.html > > Kernel debug options: > > http://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug-options.html Thanks for the links, I meanwhile was able to create the bt and the PR: http://www.freebsd.org/cgi/query-pr.cgi?pr=156691 Helmut
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