[dm-devel] [Report] crash tool cannot resolve struct dm_table properly

[Eric Ren]

Hi,


On 04/13/2017 07:28 PM, Mikulas Patocka wrote:
>
> On Thu, 13 Apr 2017, Eric Ren wrote:
>
>> Hi Mikulas,
>>
>> When inspecting on coredump with crash tool, I find that 'dm_table' cannot be
>> resolved properly as follows:
>>
>> ===
>> crash> struct dm_table
>> struct dm_table {
>>      int undefined__;
>> }
>> SIZE: 4
>> ===
>>
>> Looks this issue is introduced by 83d5e5b (dm: optimize use SRCU and RCU) with
>> this code:
>> ===
>> +/*
>> + * A dummy definition to make RCU happy.
>> + * struct dm_table should never be dereferenced in this file.
>>   + */ +struct dm_table {
>> + int undefined__;
>> +};
>> +
>> ===
>>
>> It stops me from looking into dm_table when analyzing coredump. Is there any
>> workaround?
>> or can be fixed somehow?
>>
>> Regards,
>> Eric
> So, move dm_table definition to drivers/md/dm.h
Thanks. So, are your going to fix this? Or should I test on your suggestion
and send a patch if it works?

Regards,
Eric
>
> Mikulas
>