diff options
Diffstat (limited to 'net/tap.c')
| -rw-r--r-- | net/tap.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/net/tap.c b/net/tap.c index 23536c09b4..f7df702f97 100644 --- a/net/tap.c +++ b/net/tap.c @@ -190,6 +190,11 @@ static void tap_send(void *opaque) break; } + if (s->host_vnet_hdr_len && size <= s->host_vnet_hdr_len) { + /* Invalid packet */ + break; + } + if (s->host_vnet_hdr_len && !s->using_vnet_hdr) { buf += s->host_vnet_hdr_len; size -= s->host_vnet_hdr_len; @@ -890,8 +895,8 @@ int net_init_tap(const Netdev *netdev, const char *name, goto free_fail; } - ret = g_unix_set_fd_nonblocking(fd, true, NULL); - if (!ret) { + if (!g_unix_set_fd_nonblocking(fd, true, NULL)) { + ret = -1; error_setg_errno(errp, errno, "%s: Can't use file descriptor %d", name, fd); goto free_fail; |