diff options
| author | Paul Jakma <paul@quagga.net> | 2010-04-13 22:33:54 +0100 |
|---|---|---|
| committer | Paul Jakma <paul@quagga.net> | 2010-12-08 17:11:18 +0000 |
| commit | 6634974d68b8cc78cdde1104636fe97d7e310845 (patch) | |
| tree | ac049e9e0e61ba90ee3790e4162c561b32894e1b /ospfd/ospf_lsa.c | |
| parent | 8a81ee114a122966cb396d53dd8fcbda2eb619f5 (diff) | |
ospfd: fix lsa_refresh_walker unlock before use bug
* ospf_lsa.c: (ospf_lsa_refresh_walker) fix an "unlock before use" bug
(various) add asserts for lsa refcounting.
Diffstat (limited to 'ospfd/ospf_lsa.c')
| -rw-r--r-- | ospfd/ospf_lsa.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/ospfd/ospf_lsa.c b/ospfd/ospf_lsa.c index e708d5e2..dbf0f417 100644 --- a/ospfd/ospf_lsa.c +++ b/ospfd/ospf_lsa.c @@ -3608,6 +3608,7 @@ ospf_lsa_refresh (struct ospf *ospf, struct ospf_lsa *lsa) { struct external_info *ei; assert (CHECK_FLAG (lsa->flags, OSPF_LSA_SELF)); + assert (lsa->lock > 0); switch (lsa->data->type) { @@ -3650,6 +3651,7 @@ ospf_refresher_register_lsa (struct ospf *ospf, struct ospf_lsa *lsa) { u_int16_t index, current_index; + assert (lsa->lock > 0); assert (CHECK_FLAG (lsa->flags, OSPF_LSA_SELF)); if (lsa->refresh_list < 0) @@ -3692,6 +3694,7 @@ ospf_refresher_register_lsa (struct ospf *ospf, struct ospf_lsa *lsa) void ospf_refresher_unregister_lsa (struct ospf *ospf, struct ospf_lsa *lsa) { + assert (lsa->lock > 0); assert (CHECK_FLAG (lsa->flags, OSPF_LSA_SELF)); if (lsa->refresh_list >= 0) { @@ -3744,6 +3747,8 @@ ospf_lsa_refresh_walker (struct thread *t) refresh_list = ospf->lsa_refresh_queue.qs [i]; + assert (i >= 0); + ospf->lsa_refresh_queue.qs [i] = NULL; if (refresh_list) @@ -3755,8 +3760,8 @@ ospf_lsa_refresh_walker (struct thread *t) "refresh lsa %p (slot %d)", inet_ntoa (lsa->data->id), lsa, i); + assert (lsa->lock > 0); list_delete_node (refresh_list, node); - ospf_lsa_unlock (&lsa); /* lsa_refresh_queue */ lsa->refresh_list = -1; listnode_add (lsa_to_refresh, lsa); } @@ -3769,7 +3774,11 @@ ospf_lsa_refresh_walker (struct thread *t) ospf->lsa_refresher_started = quagga_time (NULL); for (ALL_LIST_ELEMENTS (lsa_to_refresh, node, nnode, lsa)) - ospf_lsa_refresh (ospf, lsa); + { + ospf_lsa_refresh (ospf, lsa); + assert (lsa->lock > 0); + ospf_lsa_unlock (&lsa); /* lsa_refresh_queue & temp for lsa_to_refresh*/ + } list_delete (lsa_to_refresh); |