diff options
| -rw-r--r-- | hw/usb/bus.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/hw/usb/bus.c b/hw/usb/bus.c index 5939b273b9..d910f849e7 100644 --- a/hw/usb/bus.c +++ b/hw/usb/bus.c @@ -407,8 +407,10 @@ void usb_register_companion(const char *masterbus, USBPort *ports[], void usb_port_location(USBPort *downstream, USBPort *upstream, int portnr) { if (upstream) { - snprintf(downstream->path, sizeof(downstream->path), "%s.%d", - upstream->path, portnr); + int l = snprintf(downstream->path, sizeof(downstream->path), "%s.%d", + upstream->path, portnr); + /* Max string is nn.nn.nn.nn.nn, which fits in 16 bytes */ + assert(l < sizeof(downstream->path)); downstream->hubcount = upstream->hubcount + 1; } else { snprintf(downstream->path, sizeof(downstream->path), "%d", portnr); |