Re: linux-next: Tree for Dec 7 (kallsyms failure)

On 12/07/16 15:56, Stephen Rothwell wrote:

Hi Randy,

On Wed, 7 Dec 2016 15:42:32 -0800 Randy Dunlap [off-list ref] wrote:

quoted

I started seeing this yesterday (2016-1206).
This is on x86_64.

Anybody know about it?

kallsyms failure: relative symbol value 0xffffffff81000000 out of range in relative mode

I got a similar failure starting a few days ago on my powerpc
allyesconfig build.  I was assuming that it was PowerPC specific, but
noone has found a cause yet.

It may just be an invalid randconfig.  I modified scripts/kallsyms.c and
I see this message:
kallsyms failure: relative symbol value 0xffffffff81000000 [symbol: Tstartup_64] out of range in relative mode

and it makes sense that startup_64 would (or could) be at 0xffffffff81000000...
especially since CONFIG_PHYSICAL_START=0x1000000 and
(from Documentation/x86/x86_64/mm.txt)
ffffffff80000000 - ffffffff9fffffff (=512 MB)  kernel text mapping, from phys 0


Ard, what do you think about this?

thanks,
-- 
~Randy