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| author | Ka-Cheong Poon <ka-cheong.poon@oracle.com> | 2019-09-24 17:51:16 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-09-27 12:10:55 +0200 |
| commit | 05733434ee9ae6548723a808647248583e347cca (patch) | |
| tree | 7a9fe3ea13f277233a5871b7ac7008bdda4c51f3 | |
| parent | Merge branch 'SO_PRIORITY' (diff) | |
| download | linux-05733434ee9ae6548723a808647248583e347cca.tar.xz linux-05733434ee9ae6548723a808647248583e347cca.zip | |
net/rds: Check laddr_check before calling it
In rds_bind(), laddr_check is called without checking if it is NULL or
not. And rs_transport should be reset if rds_add_bound() fails.
Fixes: c5c1a030a7db ("net/rds: An rds_sock is added too early to the hash table")
Reported-by: syzbot+fae39afd2101a17ec624@syzkaller.appspotmail.com
Signed-off-by: Ka-Cheong Poon <ka-cheong.poon@oracle.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/rds/bind.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/rds/bind.c b/net/rds/bind.c index 20c156a73e73..5b5fb4ca8d3e 100644 --- a/net/rds/bind.c +++ b/net/rds/bind.c @@ -244,7 +244,8 @@ int rds_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) */ if (rs->rs_transport) { trans = rs->rs_transport; - if (trans->laddr_check(sock_net(sock->sk), + if (!trans->laddr_check || + trans->laddr_check(sock_net(sock->sk), binding_addr, scope_id) != 0) { ret = -ENOPROTOOPT; goto out; @@ -263,6 +264,8 @@ int rds_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) sock_set_flag(sk, SOCK_RCU_FREE); ret = rds_add_bound(rs, binding_addr, &port, scope_id); + if (ret) + rs->rs_transport = NULL; out: release_sock(sk); |