[PATCH v13 00/10] powerpc: Switch to CONFIG_THREAD_INFO_IN_TASK

[Michael Ellerman]

LEROY Christophe <christophe.leroy at c-s.fr> writes:
> Michael Ellerman <mpe at ellerman.id.au> a écrit :
>
>> Christophe Leroy <christophe.leroy at 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 ?

I did test a previous version of the series, but I'm not sure if I
tested pmac32 before. So I don't have a known good version.

>> [    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.

Yep good clue.

cheers