| Message ID | 20241014151247.1902637-7-stefan.wiehler@nokia.com (mailing list archive) |
|---|---|
| State | Superseded |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | Lock RCU before calling ip6mr_get_table() | expand |
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c index 5171d64e046b..ecb9e86fe45a 100644 --- a/net/ipv6/ip6mr.c +++ b/net/ipv6/ip6mr.c @@ -467,7 +467,9 @@ static void *ipmr_mfc_seq_start(struct seq_file *seq, loff_t *pos) struct net *net = seq_file_net(seq); struct mr_table *mrt; + rcu_read_lock(); mrt = ip6mr_get_table(net, RT6_TABLE_DFLT); + rcu_read_unlock(); if (!mrt) return ERR_PTR(-ENOENT);
When IPV6_MROUTE_MULTIPLE_TABLES is enabled, calls to ip6mr_get_table() must be done under RCU or RTNL lock. Fixes: d1db275dd3f6 ("ipv6: ip6mr: support multiple tables") Signed-off-by: Stefan Wiehler <stefan.wiehler@nokia.com> --- net/ipv6/ip6mr.c | 2 ++ 1 file changed, 2 insertions(+)