[sr-dev] [kamailio/kamailio] 5.5.1 crash processing INVITE and CANCEL at almost the same time (Issue #3156)

Daniel-Constantin Mierla notifications at github.com
Tue Jul 12 14:27:02 CEST 2022


Hmm, a little bit strange, because t_unref() has safety checks at the beginning:

```c
int t_unref( struct sip_msg* p_msg  )
{
	enum kill_reason kr;

	if (T==T_UNDEFINED || T==T_NULL_CELL)
		return -1;
...
```

`T` being a local global cannot be overwritten by another process...

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