Messages in this thread | | | From | Edward Goggin <> | Subject | looking for explanation of spontaneous reset/reboot on Opteron | Date | Thu, 12 Oct 2006 13:43:15 -0400 |
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I'm looking for information about potential causes for a spontaneous reboot of a dual core Opteron running RHEL 4 linux (2.6.9 derivative). I'm thinking the cause is due to the box taking a triple fault and resetting the BIOS.
I'm also thinking that the triple fault is caused by a kernel stack overflow into an unmapped virtual page frame. Is this a reasonable explanation? Are there others?
What are reasonable debugging strategies for handling this? Following the kernel stack overflow hunch, I'm going to try increasing the Opteron stack size from 8K to 16K. Can this be done by simply changing THREAD_ORDER in include/asm-x86_64/page.h from 1 to 2?
Also, is there any kernel stack overflow detection debugging code anywhere for x86_64 as there is for i386?
Thanks,
Ed Goggin - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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