[PATCH] nptl: Avoid expected SIGALRM in most tests [BZ #20432]

[Adhemerval Zanella]

On 26/08/2016 14:47, Adhemerval Zanella wrote:
> 
> 
> On 26/08/2016 14:13, Florian Weimer wrote:
>> On 08/26/2016 07:01 PM, Carlos O'Donell wrote:
>>>>> +  pthread_t thr;
>>>>> +  int ret = pthread_create (&thr, attr, thread_func, closure);
>>>>> +  if (ret != 0)
>>> Could we make this more robust by looping on EAGAIN and trying
>>> to create the thread until it succeeds or we timeout the test?
>>>
>>> This way embedded systems with less memory might operate correctly,
>>> and we might avoid the slow reaping problems in the linux kernel?
>>
>> This would be undesirable because it would paper over glibc or kernel bugs.  Such bugs typically involve races in RLIMIT_NPROC accouting, for example:
>>
>>   <https://sourceware.org/ml/libc-alpha/2012-09/msg00538.html>
>>   <https://sourceware.org/ml/libc-alpha/2013-04/msg00294.html>
>>
>> I believe this has subsequently been fixed in the kernel, but it appears to have resurfaced in Linux 4.6+ in some configurations (far fewer than before).
>>
>> Florian
>>
> 
> As a side note, how this issue is related to BZ# 20432 (malloc: 
> Minimize interface required for interposition)? 
> 

I just noted you corrected the bug reference in CL, nevermind then.