Re: A oops occur when it calls kmem_cache_alloc

[zhong jiang]

On 2016/3/4 18:45, Tetsuo Handa wrote:
> On 2016/03/04 17:36, zhong jiang wrote:
>> The vmcore file show the collapse reason that the page had been removed
>> when we acqure the page and  prepare to remove the page from the slub
>>  partial list.
>>
>> The list is protected by the spin_lock from concurrent operation. And I find
>> that other core is wating the lock to alloc memory.  Therefore , The concurrent
>> access should be impossible.
>>
>> what situatios can happen ?  or it is a kernel bug potentially.  This question
>> almost impossible to produce again. The following is the call statck belonging to
>> the module.
> No kernel version, no clue.
>
>
>
   Sorry,  The kernel version is 3.4 stable version.  And The mainline , by comparison,  have no relative
   modification.

Thanks
zhongjiang