From 62713a2e50f653162387451034f1a2490e87be88 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Mon, 4 Jun 2018 12:14:20 -0300 Subject: [PATCH] usb/dev-mtp: Fix use of uninitialized values MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This fixes: hw/usb/dev-mtp.c:971:5: warning: 4th function call argument is an uninitialized value trace_usb_mtp_op_get_partial_object(s->dev.addr, o->handle, o->path, c->argv[1], c->argv[2]); ^~~~~~~~~~ and: hw/usb/dev-mtp.c:981:12: warning: Assigned value is garbage or undefined offset = c->argv[1]; ^ ~~~~~~~~~~ Reported-by: Clang Static Analyzer Signed-off-by: Philippe Mathieu-Daudé Message-id: 20180604151421.23385-3-f4bug@amsat.org Signed-off-by: Gerd Hoffmann --- hw/usb/dev-mtp.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/hw/usb/dev-mtp.c b/hw/usb/dev-mtp.c index 560c61c7c1..b0ab6a7912 100644 --- a/hw/usb/dev-mtp.c +++ b/hw/usb/dev-mtp.c @@ -1017,12 +1017,16 @@ static MTPData *usb_mtp_get_object(MTPState *s, MTPControl *c, static MTPData *usb_mtp_get_partial_object(MTPState *s, MTPControl *c, MTPObject *o) { - MTPData *d = usb_mtp_data_alloc(c); + MTPData *d; off_t offset; + if (c->argc <= 2) { + return NULL; + } trace_usb_mtp_op_get_partial_object(s->dev.addr, o->handle, o->path, c->argv[1], c->argv[2]); + d = usb_mtp_data_alloc(c); d->fd = open(o->path, O_RDONLY); if (d->fd == -1) { usb_mtp_data_free(d);