On Thu, May 23, 2013 at 12:58:01PM +0100, Matt Fleming wrote: > On Wed, 22 May, at 11:27:47AM, Russ Anderson wrote: > > [ 6.062157] EFI Variables Facility v0.08 2004-May-17 > > [ 6.067731] BUG: unable to handle kernel paging request at > > 000000007ca95b10 > > [ 6.075519] IP: [<ffff88007dbf2140>] 0xffff88007dbf213f > > This is a bit of a head scratcher. Could you paste the EFI memmap > entries in your dmesg for the regions that cover 0x7ca95b10 and > 0x7dbf2140? My guess would be that they're EFI runtime code regions, > which would at least explain why we seem to be executing code in the > direct mapping region (0xffff8800xxxxxxxx). > > Are you booting via the EFI boot stub?
Interesting data point. The failure is on a rhel7/grub2 root. The identical kernel on a rhel6/grub root boots. So maybe grub2 brings out the failure? I suspect Fedora19/grub2 on EFI should hit the problem (for someone looking to reproduce it). In both cases the kernel boot line options are the same. -- Russ Anderson, OS RAS/Partitioning Project Lead SGI - Silicon Graphics Inc r...@sgi.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
