[uclibc-ng-devel] ARC uClibc-ng testsuite runs empty ?

Cupertino Miranda Cupertino.Miranda at synopsys.com
Fri Jan 13 16:06:06 CET 2017


Hi Waldemar,

I have looked into the OpenADK uclibc-tests segmentation fault at hand.
Although, I haven't fully tested the patch I think it is a fix for the
issue.

Considering how long I took to look into this problem, I decided to
provide you a patch immediately for you to try it.
BTW, in my case, it fails a little further, but because of some
undefined references.
Maybe it is not really a problem on the toolchain.

Best regards,
Cupertino

On 01/11/2017 11:40 PM, Waldemar Brodkorb wrote:
> Hi,
> Vineet Gupta wrote,
>
>> On 01/11/2017 12:48 PM, Waldemar Brodkorb wrote:
>>> I reported the issue to Alexey last year.
>>> We added your binutils maintainer to the thread.
>>> Yesterday he had again time to reproduce the problem, but there was
>>> some missing information I gave him yesterday.
>>>
>>> So may be you can help with this?
>> It is beyond my area of expertise and Cuper is looking into it, it is in good
>> hands already ;-)
>>
>> OTOH the reason I was dabbling into this was to track down tst-getpid2 failure on
>> ARC as reported in last known reports.
>>
>> It seems glibc dropped this test and added a new one instead. See commit
>> 0cb313f7cb0e41 ("Fix clone (CLONE_VM) pid/tid reset (BZ#19957)")
>>
>> I tried copying over tst-clone2 into uClibc (with a hdr include adjustment), but
>> it seems to runtime fail for me very early (atleast in nSIM).
>>
>> | [ARCLinux]# ./tst-clone2
>> | child pid (62) != received pid/tid (0/1606237724)
>> | parent pid (61) != received pid/tid (0/1606237724)
>> | [ARCLinux]# random: crng init done
>> | echo $?
>> | 2
>>
>> Can you please double check this for other targets !
> I have yesterday seen this commit
> c579f48edba88380635ab98cb612030e3ed8691e in glibc and would 
> like to follow here and remove any PID/TID caching.
>
> Afterwards I can take a look into 0cb313f7cb0e41.
>  
>>> It is really blocking any complete regression testing :( 
>> I know sucks, lets hope Cuper nails it down quickly.
> That would be really cool.
>
> best regards
>  Waldemar
>

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