[asterisk-dev] Strange seg fault

[Killian Matter]

the function that is executed and get a seg fault is one that reset the
struct, but none of the calls of this function in the module is used, it's
really like the audiohook update it's state ( so i suppose from the hang
up) and then it launch the function i don't know why...
Maybe on hang up it doesn't have much time to detach audiohook and the
dialplan goes on so some data are freed before the detach of audiohook and
datastore do their job and so seg fault.

Killian MATTER


Le lun. 18 janv. 2021 à 12:08, Joshua C. Colp <jcolp at digium.com> a écrit :

> On Mon, Jan 18, 2021 at 7:00 AM Killian Matter <matter.killian at gmail.com>
> wrote:
>
>> Hello, i'm working on a module, it has struct that is malloc and free ( a
>> function used in the dialplan to clean everything up). The problem is that
>> after the clean up a "wild" audiohook update occurs and after that a custom
>> function from my module is executed and get an seg fault.
>>
>> it look like a sync problem but is it even possible ? (e didn't ever see
>> a sync prob in C language)
>>
>
> It is entirely possible for something to be used after it is freed, if
> care is not taken to ensure it remains valid. Unfortunately there's not
> really enough information to be able to answer further with any certainty
> as to what is going on.
>
> --
> Joshua C. Colp
> Asterisk Technical Lead
> Sangoma Technologies
> Check us out at www.sangoma.com and www.asterisk.org
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