Hi ,
Currently I am running kamailio 4.2 and now upgrading to kamailio 5.2 and was
just going thru the changes.
In the file modules/usrloc/udomain.c inside the function free_udomain( ) , it
appears that we are not protecting via lock_ulslot and unlock_ulslot doing
free. Could it cause some race condition ?
May be its intentional but going thru the github history its there since day 1.
I checked all branches in kamailio 4.x and we have the protection.
In 4.x
void free_udomain(udomain_t* _d)
{
int i;
if (_d->table) {
for(i = 0; i < _d->size; i++) {
lock_ulslot(_d, i);
deinit_slot(_d->table + i);
unlock_ulslot(_d, i);
}
shm_free(_d->table);
} shm_free(_d);
}
In 5.x
void free_udomain(udomain_t* _d)
{
int i;
if (_d->table) {
for(i = 0; i < _d->size; i++) {
deinit_slot(_d->table + i);
}
shm_free(_d->table);
}
shm_free(_d);
}
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