Date: Fri, 21 May 1999 23:38:56 -0400 From: "David E. Cross" <crossd@cs.rpi.edu> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: "David E. Cross" <crossd@cs.rpi.edu>, freebsd-hackers@FreeBSD.ORG, schimken@cs.rpi.edu, crossd@cs.rpi.edu Subject: Re: Repeatable kernel panic for 3.2-RELEASE NFS server Message-ID: <199905220338.XAA40251@cs.rpi.edu> In-Reply-To: Message from Matthew Dillon <dillon@apollo.backplane.com> of "Fri, 21 May 1999 20:07:54 PDT." <199905220307.UAA69634@apollo.backplane.com>
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> Another possibly re: debugging. If you compile up a kernel with > options DDB and options BREAK_TO_DEBUGGER, the kernel will break into > DDB when the panic occurs. You can then issue a 'trace' command to get > a backtrace. > > This may be good enough to determine what the problem is because > the cause of a 'lockmgr: locking against myself' panic tends to be > entirely contained within the current stack trace. All my kernels are now DDB kernels :) But since I do almost all of my work remotely they are DDB_UNATTENDED, and the machine I am panic-ing is not on the serial console server (sorry). I do have another question about DDB, I unstalled -STABLE as of today (from releng3.fre...) and I compiled the kernel with DDB, and DDB_UNATTENDED per usual. Now when I C-A-E to get into the debugger and type 'panic' it drops me at another debugging prompt. If I type panic from that I get the real thing, any ideas? My next email will hopefully have the stack trace for this panic. -- David Cross | email: crossd@cs.rpi.edu Systems Administrator/Research Programmer | Web: http://www.cs.rpi.edu/~crossd Rensselaer Polytechnic Institute, | Ph: 518.276.2860 Department of Computer Science | Fax: 518.276.4033 I speak only for myself. | WinNT:Linux::Linux:FreeBSD To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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