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

[Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>]

Hi Gao,

2012/01/04 11:05, Wanlong Gao wrote:
 > 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.

As you say, it has not been accepted yet.
But I think Linux will be fixed to return EOVERFLOW in mmap/31-1's test
in the near future.

Regards,
Yasuaki Ishimatsu

 >
 > Thanks
 > -Wanlong Gao
 >
 >>
 >> Regards,
 >> Yasuaki Ishimatsu
 >>
 >>>
 >>> Regards,
 >>> Kai
 >
 >
 >
 >


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