diff options
| author | Nikolay Borisov <nborisov@suse.com> | 2017-08-09 14:38:04 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-08-12 19:31:22 -0700 |
| commit | f628c9df047b132b2c3eba997bf06ab1dcbbeea6 (patch) | |
| tree | 3721d719abab0162fd148acc48470bd447af5c29 | |
| parent | 69ffc9644ffec424cd3f74794b2d616405576e1e (diff) | |
igmp: Fix regression caused by igmp sysctl namespace code.
[ Upstream commit 1714020e42b17135032c8606f7185b3fb2ba5d78 ]
Commit dcd87999d415 ("igmp: net: Move igmp namespace init to correct file")
moved the igmp sysctls initialization from tcp_sk_init to igmp_net_init. This
function is only called as part of per-namespace initialization, only if
CONFIG_IP_MULTICAST is defined, otherwise igmp_mc_init() call in ip_init is
compiled out, casuing the igmp pernet ops to not be registerd and those sysctl
being left initialized with 0. However, there are certain functions, such as
ip_mc_join_group which are always compiled and make use of some of those
sysctls. Let's do a partial revert of the aforementioned commit and move the
sysctl initialization into inet_init_net, that way they will always have
sane values.
Fixes: dcd87999d415 ("igmp: net: Move igmp namespace init to correct file")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=196595
Reported-by: Gerardo Exequiel Pozzi <vmlinuz386@gmail.com>
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | net/ipv4/af_inet.c | 7 | ||||
| -rw-r--r-- | net/ipv4/igmp.c | 6 |
2 files changed, 7 insertions, 6 deletions
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c index f60fe82c2c1e..b5116ec31757 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -1693,6 +1693,13 @@ static __net_init int inet_init_net(struct net *net) net->ipv4.sysctl_ip_dynaddr = 0; net->ipv4.sysctl_ip_early_demux = 1; + /* Some igmp sysctl, whose values are always used */ + net->ipv4.sysctl_igmp_max_memberships = 20; + net->ipv4.sysctl_igmp_max_msf = 10; + /* IGMP reports for link-local multicast groups are enabled by default */ + net->ipv4.sysctl_igmp_llm_reports = 1; + net->ipv4.sysctl_igmp_qrv = 2; + return 0; } diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c index 19930da56b0a..08575e3bd135 100644 --- a/net/ipv4/igmp.c +++ b/net/ipv4/igmp.c @@ -2974,12 +2974,6 @@ static int __net_init igmp_net_init(struct net *net) goto out_sock; } - /* Sysctl initialization */ - net->ipv4.sysctl_igmp_max_memberships = 20; - net->ipv4.sysctl_igmp_max_msf = 10; - /* IGMP reports for link-local multicast groups are enabled by default */ - net->ipv4.sysctl_igmp_llm_reports = 1; - net->ipv4.sysctl_igmp_qrv = 2; return 0; out_sock: |