Date: Tue, 26 Oct 2004 22:00:12 -0400 From: Garance A Drosihn <drosih@rpi.edu> To: "David Boyd" <David.Boyd@insightbb.com>, <current@freebsd.org> Subject: Re: Panic on shutdown -r now Message-ID: <p06110454bda4aee6a9e0@[128.113.24.47]> In-Reply-To: <DIEGJJFBNADMCJBGPCBKAEGBDAAA.David.Boyd@insightbb.com> References: <DIEGJJFBNADMCJBGPCBKAEGBDAAA.David.Boyd@insightbb.com>
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At 7:53 PM -0400 10/25/04, David Boyd wrote: >I am resubmitting this (see 10/7/2004) because it persists >in 5.3-RELEASE. > >System is very recent (last night) cvsup of RELENG_5. > >Motherboard is Intel D865PERL. > >The system is setup to collect a dump after a panic, but none is >ever found. Also, the corrupted output after "Shutting down ACPI" >is about as good as it gets... sometimes the console (vga or >serial) displays just one or two "random" letters (usually an "s"). Earlier this year, I had seen similar garbage output on some of my systems at shutdown. I don't remember the details, except that I was not getting any panics, and that the garbage went away at some point. Are you sure the system is set up correctly for collecting coredumps? When you are using a serial console, can you do a serial-break, and force a coredump? (just type in "call doadump()"). See if that gives you a core dump after you reboot. The contents won't be important, but it would tell you if coredumps themselves are working. The main reason I ask is that I thought coredumps were not working for me either, but it turned out that I had forgotten to add options KDB, DDB, and BREAK_TO_DEBUGGER in my kernel config. Once I added them, coredumps worked fine for me. (but then, this is on a single CPU system, and I notice you have multiple CPU's) >It doesn't appear that disabling ACPI has any effect on this >problem. When you disable ACPI, then when does the garbage output occur? I assume you do *not* see the "Shutting down ACPI" message when you have ACPI turned off. >Shutdown -p now always performs a power off. > >The system is temporarily a spare, so I can do anything that you >think may help. In your kernel config, do you have hyperthreading (HTT) turned on? (I notice your CPU's support it) I do not know enough about kernel debugging to be of any help, but those are a few questions which came to mind. -- Garance Alistair Drosehn = gad@gilead.netel.rpi.edu Senior Systems Programmer or gad@freebsd.org Rensselaer Polytechnic Institute or drosih@rpi.edu
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