lkml.org 
[lkml]   [2019]   [Jan]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v13 00/10] powerpc: Switch to CONFIG_THREAD_INFO_IN_TASK
Michael Ellerman <mpe@ellerman.id.au> a écrit :

> Christophe Leroy <christophe.leroy@c-s.fr> writes:
>
>> The purpose of this serie is to activate CONFIG_THREAD_INFO_IN_TASK which
>> moves the thread_info into task_struct.
>>
>> Moving thread_info into task_struct has the following advantages:
>> - It protects thread_info from corruption in the case of stack
>> overflows.
>> - Its address is harder to determine if stack addresses are
>> leaked, making a number of attacks more difficult.
>>
>> Changes since v12:
>> - Patch 1: Taken comment from Mike (re-introduced the 'panic' in
>> case memblock allocation fails in setup_64.c
>> - Patch 1: Added alloc_stack() function in setup_32.c to also
>> panic in case of allocation failure.
>
> Hi Christophe,
>
> I can't get this series to boot on qemu mac99. I'm getting eg:

Problem new with version 13 or it is the first time you test ?

>
> [ 0.981514] NFS: Registering the id_resolver key type
> [ 0.981752] Key type id_resolver registered
> [ 0.981868] Key type id_legacy registered
> [ 0.995711] Unrecoverable exception 0 at 0 (msr=0)
> [ 0.996091] Oops: Unrecoverable exception, sig: 6 [#1]
> [ 0.996314] BE PAGE_SIZE=4K MMU=Hash PowerMac
> [ 0.996617] Modules linked in:
> [ 0.996869] CPU: 0 PID: 416 Comm: modprobe Not tainted
> 5.0.0-rc2-gcc-7.3.0-00043-g53f2de798792 #342

Comm:modprobe ==> Something wrong with modules ? I never tested with
CONFIG_MODULES.

Christophe

> [ 0.997138] NIP: 00000000 LR: 00000000 CTR: 00000000
> [ 0.997309] REGS: ef237f50 TRAP: 0000 Not tainted
> (5.0.0-rc2-gcc-7.3.0-00043-g53f2de798792)
> [ 0.997508] MSR: 00000000 <> CR: 00000000 XER: 00000000
> [ 0.997712]
> [ 0.997712] GPR00: 00000000 ef238000 00000000 00000000 00000000
> 00000000 00000000 00000000
> [ 0.997712] GPR08: 00000000 00000000 00000000 00000000 00000000
> 00000000 c006477c ef13d8c0
> [ 0.997712] GPR16: 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000 00000000
> [ 0.997712] GPR24: 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000 00000000
> [ 0.998671] NIP [00000000] (null)
> [ 0.998774] LR [00000000] (null)
> [ 0.998895] Call Trace:
> [ 0.999030] Instruction dump:
> [ 0.999320] XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
> XXXXXXXX XXXXXXXX
> [ 0.999546] XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX 60000000 XXXXXXXX
> XXXXXXXX XXXXXXXX
> [ 1.000023] ---[ end trace 925ea3419844fe68 ]---
>
> I haven't had time to dig any further.
>
> cheers


\
 
 \ /
  Last update: 2019-01-19 18:22    [W:1.337 / U:0.032 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site