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| author | Pavel Emelyanov <xemul@openvz.org> | 2007-12-04 00:43:24 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-12-05 05:37:26 -0800 |
| commit | a014bc8f0f0a3a0cac4fef656f101cdfb77b71eb (patch) | |
| tree | 0b48fdff5525ddba1c64a8c0fd8c8fb6e1a9aeab | |
| parent | e3c0ac04f980750a368f7cd5f1b8d1d2cdc1f735 (diff) | |
| download | blackbird-op-linux-a014bc8f0f0a3a0cac4fef656f101cdfb77b71eb.tar.gz blackbird-op-linux-a014bc8f0f0a3a0cac4fef656f101cdfb77b71eb.zip | |
[IPVS]: Don't leak sysctl tables if the scheduler registration fails.
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>
| -rw-r--r-- | net/ipv4/ipvs/ip_vs_lblc.c | 7 | ||||
| -rw-r--r-- | net/ipv4/ipvs/ip_vs_lblcr.c | 7 |
2 files changed, 12 insertions, 2 deletions
diff --git a/net/ipv4/ipvs/ip_vs_lblc.c b/net/ipv4/ipvs/ip_vs_lblc.c index b843a11d7cf7..ad89644ef5d2 100644 --- a/net/ipv4/ipvs/ip_vs_lblc.c +++ b/net/ipv4/ipvs/ip_vs_lblc.c @@ -580,9 +580,14 @@ static struct ip_vs_scheduler ip_vs_lblc_scheduler = static int __init ip_vs_lblc_init(void) { + int ret; + INIT_LIST_HEAD(&ip_vs_lblc_scheduler.n_list); 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; } diff --git a/net/ipv4/ipvs/ip_vs_lblcr.c b/net/ipv4/ipvs/ip_vs_lblcr.c index e5b323a6b2f7..2a5ed85a3352 100644 --- a/net/ipv4/ipvs/ip_vs_lblcr.c +++ b/net/ipv4/ipvs/ip_vs_lblcr.c @@ -769,9 +769,14 @@ static struct ip_vs_scheduler ip_vs_lblcr_scheduler = static int __init ip_vs_lblcr_init(void) { + int ret; + INIT_LIST_HEAD(&ip_vs_lblcr_scheduler.n_list); 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; } |
