tree b7dc1b4a1ac6f8cdf1285927ecaf07b2b5d198ca
parent 638dc32cc61d5bc6dc3590cbd938abc92af9e4ec
author Dan Carpenter <dan.carpenter@oracle.com> 1376571177 +0300
committer chrmhoffmann <chrmhoffmann@gmail.com> 1586074727 +0200

tun: signedness bug in tun_get_user()

[ Upstream commit 15718ea0d844e4816dbd95d57a8a0e3e264ba90e ]

The recent fix d9bf5f1309 "tun: compare with 0 instead of total_len" is
not totally correct.  Because "len" and "sizeof()" are size_t type, that
means they are never less than zero.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>