From: Antonio Quartulli <antonio@meshcoding.com>
To: b.a.t.m.a.n@lists.open-mesh.org
Cc: Antonio Quartulli <antonio@meshcoding.com>
Subject: [B.A.T.M.A.N.] [PATCH maint] batman-adv: release vlan object after checking the CRC
Date: Tue, 28 Jan 2014 02:06:47 +0100 [thread overview]
Message-ID: <1390871207-431-1-git-send-email-antonio@meshcoding.com> (raw)
There is a refcounter unbalance in the CRC checking routine
invoked on OGM reception. A vlan object is retrieved (thus
its refcounter is increased by one) but it is never properly
released. This leads to a memleak because the vlan object
will never be free'd.
Fix this by releasing the vlan object after having read the
CRC.
Reported-by: Russell Senior <russell@personaltelco.net>
Reported-by: Daniel <daniel@makrotopia.org>
Reported-by: cmsv <cmsv@wirelesspt.net>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---
translation-table.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/translation-table.c b/translation-table.c
index 3fca99d..097ca01 100644
--- a/translation-table.c
+++ b/translation-table.c
@@ -2248,6 +2248,7 @@ static bool batadv_tt_global_check_crc(struct batadv_orig_node *orig_node,
{
struct batadv_tvlv_tt_vlan_data *tt_vlan_tmp;
struct batadv_orig_node_vlan *vlan;
+ uint32_t crc;
int i;
/* check if each received CRC matches the locally stored one */
@@ -2267,7 +2268,10 @@ static bool batadv_tt_global_check_crc(struct batadv_orig_node *orig_node,
if (!vlan)
return false;
- if (vlan->tt.crc != ntohl(tt_vlan_tmp->crc))
+ crc = vlan->tt.crc;
+ batadv_orig_node_vlan_free_ref(vlan);
+
+ if (crc != ntohl(tt_vlan_tmp->crc))
return false;
}
--
1.8.5.3
next reply other threads:[~2014-01-28 1:06 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-28 1:06 Antonio Quartulli [this message]
2014-01-29 4:45 ` [B.A.T.M.A.N.] [PATCH maint] batman-adv: release vlan object after checking the CRC Marek Lindner
-- strict thread matches above, loose matches on Subject: below --
2014-01-26 14:21 [B.A.T.M.A.N.] batman-adv: memory leak? Antonio Quartulli
2014-01-26 14:24 ` [B.A.T.M.A.N.] [PATCH maint] batman-adv: release vlan object after checking the CRC Antonio Quartulli
2014-01-27 18:43 ` Russell Senior
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