[sr-dev] git:master:80beb29a: dialog: safety check for prev field

Module: kamailio Branch: master Commit: 80beb29ac0204697a8964231b441ac37866a4a1c URL: https://github.com/kamailio/kamailio/commit/80beb29ac0204697a8964231b441ac3… Author: Daniel-Constantin Mierla <miconda(a)gmail.com> Committer: Daniel-Constantin Mierla <miconda(a)gmail.com> Date: 2021-04-09T17:18:54+02:00 dialog: safety check for prev field --- Modified: src/modules/dialog/dlg_timer.c --- Diff: https://github.com/kamailio/kamailio/commit/80beb29ac0204697a8964231b441ac3… Patch: https://github.com/kamailio/kamailio/commit/80beb29ac0204697a8964231b441ac3… --- diff --git a/src/modules/dialog/dlg_timer.c b/src/modules/dialog/dlg_timer.c index 0ac13df25c..6b84a4d68c 100644 --- a/src/modules/dialog/dlg_timer.c +++ b/src/modules/dialog/dlg_timer.c @@ -222,7 +222,7 @@ static inline struct dlg_tl* get_expired_dlgs(unsigned int time) lock_get( d_timer->lock); if (d_timer->first.next==&(d_timer->first) - || d_timer->first.next->timeout > time ) { + || d_timer->first.next->timeout > time ) { lock_release( d_timer->lock); return 0; } @@ -247,7 +247,9 @@ static inline struct dlg_tl* get_expired_dlgs(unsigned int time) ret = 0; } else { ret = d_timer->first.next; - tl->prev->next = 0; + if(tl->prev) { + tl->prev->next = 0; + } d_timer->first.next = tl; tl->prev = &d_timer->first; }