From: Julian Wiedmann jwi@linux.ibm.com
[ Upstream commit c5dab0941fcdc9664eb0ec0d4d51433216d91336 ]
Child sockets erroneously inherit their parent's sk_type (ie. SOCK_*), instead of the PF_IUCV protocol that the parent was created with in iucv_sock_create().
We're currently not using sk->sk_protocol ourselves, so this shouldn't have much impact (except eg. getting the output in skb_dump() right).
Fixes: eac3731bd04c ("[S390]: Add AF_IUCV socket support") Signed-off-by: Julian Wiedmann jwi@linux.ibm.com Link: https://lore.kernel.org/r/20201120100657.34407-1-jwi@linux.ibm.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/iucv/af_iucv.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/net/iucv/af_iucv.c +++ b/net/iucv/af_iucv.c @@ -1724,7 +1724,7 @@ static int iucv_callback_connreq(struct }
/* Create the new socket */ - nsk = iucv_sock_alloc(NULL, sk->sk_type, GFP_ATOMIC, 0); + nsk = iucv_sock_alloc(NULL, sk->sk_protocol, GFP_ATOMIC, 0); if (!nsk) { err = pr_iucv->path_sever(path, user_data); iucv_path_free(path); @@ -1934,7 +1934,7 @@ static int afiucv_hs_callback_syn(struct goto out; }
- nsk = iucv_sock_alloc(NULL, sk->sk_type, GFP_ATOMIC, 0); + nsk = iucv_sock_alloc(NULL, sk->sk_protocol, GFP_ATOMIC, 0); bh_lock_sock(sk); if ((sk->sk_state != IUCV_LISTEN) || sk_acceptq_is_full(sk) ||