When the user passes in MSG_TRUNC the skb is used after getting freed. Signed-off-by: Patrick McHardy <kaber@xxxxxxxxx> Signed-off-by: David Howells <dhowells@xxxxxxxxxx> --- net/netlink/af_netlink.c | 6 ++---- 1 files changed, 2 insertions(+), 4 deletions(-) diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c index 42d2fb9..7419f70 100644 --- a/net/netlink/af_netlink.c +++ b/net/netlink/af_netlink.c @@ -1245,16 +1245,14 @@ static int netlink_recvmsg(struct kiocb *kiocb, struct socket *sock, siocb->scm = &scm; } siocb->scm->creds = *NETLINK_CREDS(skb); + if (flags & MSG_TRUNC) + copied = skb->len; skb_free_datagram(sk, skb); if (nlk->cb && atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf / 2) netlink_dump(sk); scm_recv(sock, msg, siocb->scm, flags); - - if (flags & MSG_TRUNC) - copied = skb->len; - out: netlink_rcv_wake(sk); return err ? : copied; - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
