From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jes Sorensen Date: Thu, 30 Mar 2006 09:04:25 +0000 Subject: Re: [Fedora-ia64-list] kernel 2.6.16-1.2097_FC6 unbootable on Itanium Message-Id: List-Id: References: <442AB6DD.4020800@sgi.com> In-Reply-To: <442AB6DD.4020800@sgi.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org >>>>> "Jack" = Jack Steiner writes: Jack> ... Virtual mem_map starts at 0xa0007fffd5f2c000 Built 1 Jack> zonelists Kernel command line: root=/dev/hda2 init=/bin/bash Jack> console=ttyS0 PID hash table entries: 1024 (order: 10, 32768 Jack> bytes) Console: colour dummy device 80x25 Jack> The failure is an MCA caused by a cache hit on a memory Jack> reference to an uncached address. The simulator detects this Jack> error & stops. Hi Jack, Sorry about the missing symbol table, was a bit late. I am not sure it's the same thing, as my kernel gets a lot further and normally spawns init before exploding. Jack> The code that took the failure was memcopy (or equiv). I Jack> recognized the code from the prefetchs and ld/st sequence. The Jack> data appears to be an ACPI table that is being copied into Jack> kernel memory. The current reference is using uncached addresses Jack> but 15M instructions in the past, the table was referenced Jack> cached. Jack> Does this ring any bells with anyone? This failure may occur Jack> only in our simulator environment, so don't spent any time on Jack> this unless it sounds familar. Jack> As soon as I get a symbol table, I'll know a lot more about the Jack> failure. I put one up on attica for you ~jes/System.map-jack It seems the kernel explodes in __copy_user in your case. Cheers, Jes