Re: [LTP] Posix test case mmap/31-1 fails on Linux/eglibc

Wanlong Gao
2012-01-04T02:07:58Z

On 01/04/2012 09:37 AM, Yasuaki Ishimatsu wrote:

> Hi Kai,
>
> 2011/12/28 19:55, Kang Kai wrote:
>> Hi all,
>>
>> I run mmap/31-1 failed with ENOMEM on linux, with error message:
>> off: fffffffffffff000, len: fffffffffffff000
>> Test FAIL: expect EOVERFLOW but get other error: Cannot allocate memory
>>
>> But compare to mmap/24-2, it mmap() the same length but pass. Its output:
>> available memory: 18446744073709551615
>> addr: 7f78c54fa000, len: ffffffffffffffff
>> addr: 7f78c54fa000, len: fffffffffffff000
>> Test Pass: mmap/24-2.c Get ENOMEM: Cannot allocate memory
>>
>> So I suppose that mmap/31-1 may need update, but I don't know how to
>> make mmap() overflow as expect.
>> Any suggestion is appreciated.
>
> I don't think mmap/31-1 need update since it is Linux Kernel's problem,
> not the test's problem. The problem is being discussed on LKML.
>
> https://lkml.org/lkml/2011/12/22/85

But it seems that the patch was not acceptable.

Thanks
-Wanlong Gao

>
> Regards,
> Yasuaki Ishimatsu
>
>>
>> Regards,
>> Kai