mir/bind
2
0
Fork 0
mirror of https://gitlab.isc.org/isc-projects/bind9 synced 2025-08-29 05:28:00 +00:00
Code Issues Releases Wiki Activity

Fix a potential lock-order-inversion in tcp listening code

Browse Source
This commit is contained in:
Witold Kręcicki 2019-12-10 10:05:15 +01:00
parent 01481dee1c
commit ccd44b69e5
1 changed files with 5 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
lib/isc/netmgr/tcp.c
View File

@ -186,10 +186,13 @@ isc_nm_listentcp(isc_nm_t *mgr, isc_nmiface_t *iface,
isc__nm_put_ievent(mgr, ievent);
} else {
nsock->tid = isc_random_uniform(mgr->nworkers);
LOCK(&nsock->lock);
isc__nm_enqueue_ievent(&mgr->workers[nsock->tid],
(isc__netievent_t *) ievent);
WAIT(&nsock->cond, &nsock->lock);
LOCK(&nsock->lock);
while (!atomic_load(&nsock->listening)) {
WAIT(&nsock->cond, &nsock->lock);
}
UNLOCK(&nsock->lock);
}