Re: WARNING: kernel stack frame pointer at ffffffff82e03f40 in swapper:0 has bad value (null)
From: Josh Poimboeuf
Date: Mon Dec 12 2016 - 13:10:30 EST
On Mon, Dec 12, 2016 at 06:50:23PM +0100, Borislav Petkov wrote:
> [ 0.000000] ffffffffbce03f40: 0000000000000000 ...
> [ 0.000000] ffffffffbce03f48: ffffffffbc0001b5 (start_cpu+0x5/0x14)
> [ 0.000000] ffffffffbce03f50: ffffffffbc0001b5 (start_cpu+0x5/0x14)
> [ 0.000000] ffffffffbce03f58: 0000000000000000 ...
> [ 0.000000] Linux version 4.9.0-rc8+ (root@gondor) (gcc version 6.2.0 20161109 (Debian 6.2.0-13) ) #2 SMP PREEMPT Mon Dec 12 18:36:48 CET 2016
Something funky is going on in the head code. It looks like start_cpu
is getting executed twice somehow. Need to do some more head
scratching...
--
Josh