Date: Fri, 5 May 2000 12:37:20 -0700 From: Alfred Perlstein <bright@wintelcom.net> To: Jin Guojun <jin@george.lbl.gov> Cc: hackers@FreeBSD.ORG Subject: Re: Can NMI drop a hanging FreeBSD kernel into DDB? Message-ID: <20000505123720.D29830@fw.wintelcom.net> In-Reply-To: <20000505122029.C29830@fw.wintelcom.net>; from bright@wintelcom.net on Fri, May 05, 2000 at 12:20:29PM -0700 References: <200005051831.LAA25307@george.lbl.gov> <20000505122029.C29830@fw.wintelcom.net>
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* Alfred Perlstein <bright@wintelcom.net> [000505 12:21] wrote: > * Jin Guojun <jin@george.lbl.gov> [000505 12:03] wrote: > > Hi, > > > > I am currently experimenting kernel hanging problem even through I have > > compiled the kernel with DDB enabled. > > > > How can I make a hanging kernel into DDB? Will grounding the NMI do it? > > > > Thanks for any suggestions, > > That's a bit extreme. > > hit ctrl+alt+esc on the console, or send a serial break if using > a serial console, make sure you have BREAK_TO_DEBUGGER if you're > using a serial console. Forgot to mention that an NMI will also work. -Alfred To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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