[PATCH] lib: Fix CID 1338432 Unchecked return value

Uri Simchoni uri at samba.org
Tue Nov 10 17:54:54 UTC 2015

On 11/10/2015 07:45 PM, Andrew Bartlett wrote:
> On Tue, 2015-11-10 at 09:27 -0800, Jeremy Allison wrote:
>> On Tue, Nov 10, 2015 at 10:36:38AM +0100, Volker Lendecke wrote:
>>> On Tue, Nov 10, 2015 at 11:29:41AM +0200, Uri Simchoni wrote:
>>>> On 11/10/2015 11:20 AM, Ralph Boehme wrote:
>>>>> On Tue, Nov 10, 2015 at 10:01:02AM +0100, Volker Lendecke
>>>>> wrote:
>>>>>> Review&push appreciated!
>>>>> pushed.
>>>>> -Ralph
>>>> What about printing a decent error message if it does happen?
>>>> (for
>>>> example, someone stomps over the pool object, causing a call to
>>>> pthread_join with garbage thread id)
>>>> I can see the pthreadpool code currently does not include
>>>> debug.h,
>>>> maybe for dependency reasons, but IMHO you want an error message
>>>> printed when a system call fails unexpectedly.
>>> Ok, we better leave this unpatched. I don't want to touch
>>> anything like DEBUG or even printf or syslog in anything
>>> that even from a distance touches threads.
>>> Sorry for the noise, Volker
>> No, *not* better to leave this unpatched. abort()
>> here is the correct decision.
> One of the nice things about abort() is that it will trigger the
> backtrace handler etc, which is essentially ideal for describing this
> kind of error, and that handler can and does trigger DEBUG().
> Andrew Bartlett
abort() is great and that's what should be done, but the vital piece of 
information is - what was the return value of pthread_join()? For this I 
wanted a debug message.

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