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[IPVS]: Don't leak sysctl tables if the scheduler registration fails.

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In case we load lblc or lblcr module we can leak some sysctl
tables if the call to register_ip_vs_scheduler() fails.

I've looked at the register_ip_vs_scheduler() code and saw, that
the only reason to fail is the name collision, so I think that
with some 3rd party schedulers this becomes a relevant issue. No?

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Simon Horman <horms@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Emelyanov 2007-12-04 00:43:24 -08:00 • committed by David S. Miller
parent e3c0ac04f9
commit a014bc8f0f
2 changed files with 12 additions and 2 deletions
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7
net/ipv4/ipvs/ip_vs_lblc.c
View file

@ -580,9 +580,14 @@ static struct ip_vs_scheduler ip_vs_lblc_scheduler =
static int __init ip_vs_lblc_init(void) static int __init ip_vs_lblc_init(void)
{ {
int ret;
INIT_LIST_HEAD(&ip_vs_lblc_scheduler.n_list); INIT_LIST_HEAD(&ip_vs_lblc_scheduler.n_list);
sysctl_header = register_sysctl_table(lblc_root_table); sysctl_header = register_sysctl_table(lblc_root_table);
return register_ip_vs_scheduler(&ip_vs_lblc_scheduler); ret = register_ip_vs_scheduler(&ip_vs_lblc_scheduler);
if (ret)
unregister_sysctl_table(sysctl_header);
return ret;
} }

7
net/ipv4/ipvs/ip_vs_lblcr.c
View file

@ -769,9 +769,14 @@ static struct ip_vs_scheduler ip_vs_lblcr_scheduler =
static int __init ip_vs_lblcr_init(void) static int __init ip_vs_lblcr_init(void)
{ {
int ret;
INIT_LIST_HEAD(&ip_vs_lblcr_scheduler.n_list); INIT_LIST_HEAD(&ip_vs_lblcr_scheduler.n_list);
sysctl_header = register_sysctl_table(lblcr_root_table); sysctl_header = register_sysctl_table(lblcr_root_table);
return register_ip_vs_scheduler(&ip_vs_lblcr_scheduler); ret = register_ip_vs_scheduler(&ip_vs_lblcr_scheduler);
if (ret)
unregister_sysctl_table(sysctl_header);
return ret;
} }