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[Qemu-devel] [PATCH for 2.10 18/35] usb/dev-mtp: fix use of uninitialize
From: |
Philippe Mathieu-Daudé |
Subject: |
[Qemu-devel] [PATCH for 2.10 18/35] usb/dev-mtp: fix use of uninitialized values |
Date: |
Mon, 24 Jul 2017 15:27:34 -0300 |
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]);
^~~~~~~~~~
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 <address@hidden>
---
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 ad64495f05..b4f0b5dafd 100644
--- a/hw/usb/dev-mtp.c
+++ b/hw/usb/dev-mtp.c
@@ -965,12 +965,16 @@ 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);
--
2.13.3
- [Qemu-devel] [PATCH for 2.10 13/35] vfio/pci: fix use of freed memory, (continued)
- [Qemu-devel] [PATCH for 2.10 13/35] vfio/pci: fix use of freed memory, Philippe Mathieu-Daudé, 2017/07/24
- [Qemu-devel] [PATCH for 2.10 15/35] usb: correctly handle Zero Length Packets, Philippe Mathieu-Daudé, 2017/07/24
- [Qemu-devel] [PATCH for 2.10 14/35] vfio/ccw: fix incorrect malloc() size, Philippe Mathieu-Daudé, 2017/07/24
- [Qemu-devel] [PATCH for 2.10 16/35] usb/dev-mtp: fix use of uninitialized values, Philippe Mathieu-Daudé, 2017/07/24
- [Qemu-devel] [PATCH for 2.10 17/35] usb/dev-mtp: fix use of uninitialized values, Philippe Mathieu-Daudé, 2017/07/24
- [Qemu-devel] [PATCH for 2.10 18/35] usb/dev-mtp: fix use of uninitialized values,
Philippe Mathieu-Daudé <=
- [Qemu-devel] [PATCH for 2.10 19/35] usb/dev-mtp: fix use of uninitialized variable, Philippe Mathieu-Daudé, 2017/07/24
- [Qemu-devel] [PATCH for 2.10 20/35] arm/boot: fix undefined instruction on secondary smp cpu bootloader, Philippe Mathieu-Daudé, 2017/07/24
- [Qemu-devel] [PATCH for 2.10 21/35] arm/sysbus-fdt: fix null pointer dereference, Philippe Mathieu-Daudé, 2017/07/24