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authorDenis V. Lunev <den@openvz.org>2007-11-10 22:12:03 -0800
committerDavid S. Miller <davem@davemloft.net>2007-11-10 22:12:03 -0800
commit2994c63863ac350c4c8c6a65d8110749c2abb95c (patch)
tree5509f71222641098683df1b1e0ff7bdfc2758b2c /net/ipv6
parent33d36bb83c5b566c98a441e791736e25dbc35fc3 (diff)
[INET]: Small possible memory leak in FIB rules
This patch fixes a small memory leak. Default fib rules can be deleted by the user if the rule does not carry FIB_RULE_PERMANENT flag, f.e. by ip rule flush Such a rule will not be freed as the ref-counter has 2 on start and becomes clearly unreachable after removal. Signed-off-by: Denis V. Lunev <den@openvz.org> Acked-by: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/fib6_rules.c37
1 files changed, 15 insertions, 22 deletions
diff --git a/net/ipv6/fib6_rules.c b/net/ipv6/fib6_rules.c
index 706622af206f..428c6b0e26d8 100644
--- a/net/ipv6/fib6_rules.c
+++ b/net/ipv6/fib6_rules.c
@@ -31,25 +31,6 @@ struct fib6_rule
static struct fib_rules_ops fib6_rules_ops;
-static struct fib6_rule main_rule = {
- .common = {
- .refcnt = ATOMIC_INIT(2),
- .pref = 0x7FFE,
- .action = FR_ACT_TO_TBL,
- .table = RT6_TABLE_MAIN,
- },
-};
-
-static struct fib6_rule local_rule = {
- .common = {
- .refcnt = ATOMIC_INIT(2),
- .pref = 0,
- .action = FR_ACT_TO_TBL,
- .table = RT6_TABLE_LOCAL,
- .flags = FIB_RULE_PERMANENT,
- },
-};
-
struct dst_entry *fib6_rule_lookup(struct flowi *fl, int flags,
pol_lookup_t lookup)
{
@@ -270,11 +251,23 @@ static struct fib_rules_ops fib6_rules_ops = {
.owner = THIS_MODULE,
};
-void __init fib6_rules_init(void)
+static int __init fib6_default_rules_init(void)
{
- list_add_tail(&local_rule.common.list, &fib6_rules_ops.rules_list);
- list_add_tail(&main_rule.common.list, &fib6_rules_ops.rules_list);
+ int err;
+
+ err = fib_default_rule_add(&fib6_rules_ops, 0,
+ RT6_TABLE_LOCAL, FIB_RULE_PERMANENT);
+ if (err < 0)
+ return err;
+ err = fib_default_rule_add(&fib6_rules_ops, 0x7FFE, RT6_TABLE_MAIN, 0);
+ if (err < 0)
+ return err;
+ return 0;
+}
+void __init fib6_rules_init(void)
+{
+ BUG_ON(fib6_default_rules_init());
fib_rules_register(&fib6_rules_ops);
}