diff options
| author | Wang, Xiaoming <xiaoming.wang@intel.com> | 2014-04-14 12:30:45 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-05-30 21:52:15 -0700 |
| commit | 8dbc8dc8e84b998ca8a7394ae22614f3a58d4c38 (patch) | |
| tree | 237c0096821bb1dda24b7fc6f8c3a964c57d36f2 /net | |
| parent | 4008a994ddcee13c1baa7ed8a7e66fcbddc85d29 (diff) | |
net: ipv4: current group_info should be put after using.
[ Upstream commit b04c46190219a4f845e46a459e3102137b7f6cac ]
Plug a group_info refcount leak in ping_init.
group_info is only needed during initialization and
the code failed to release the reference on exit.
While here move grabbing the reference to a place
where it is actually needed.
Signed-off-by: Chuansheng Liu <chuansheng.liu@intel.com>
Signed-off-by: Zhang Dongxing <dongxing.zhang@intel.com>
Signed-off-by: xiaoming wang <xiaoming.wang@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/ping.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c index 8cae28f5c3cf..aa857a4a06a8 100644 --- a/net/ipv4/ping.c +++ b/net/ipv4/ping.c @@ -204,26 +204,33 @@ static int ping_init_sock(struct sock *sk) { struct net *net = sock_net(sk); kgid_t group = current_egid(); - struct group_info *group_info = get_current_groups(); - int i, j, count = group_info->ngroups; + struct group_info *group_info; + int i, j, count; kgid_t low, high; + int ret = 0; inet_get_ping_group_range_net(net, &low, &high); if (gid_lte(low, group) && gid_lte(group, high)) return 0; + group_info = get_current_groups(); + count = group_info->ngroups; for (i = 0; i < group_info->nblocks; i++) { int cp_count = min_t(int, NGROUPS_PER_BLOCK, count); for (j = 0; j < cp_count; j++) { kgid_t gid = group_info->blocks[i][j]; if (gid_lte(low, gid) && gid_lte(gid, high)) - return 0; + goto out_release_group; } count -= cp_count; } - return -EACCES; + ret = -EACCES; + +out_release_group: + put_group_info(group_info); + return ret; } static void ping_close(struct sock *sk, long timeout) |