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[Qemu-devel] [PATCH 07/14] usb-mtp: fix segmentation fault
From: |
arei.gonglei |
Subject: |
[Qemu-devel] [PATCH 07/14] usb-mtp: fix segmentation fault |
Date: |
Wed, 6 May 2015 20:55:29 +0800 |
From: Gonglei <address@hidden>
When x-root property not be configured, will cause segfault
because of null pointer accessing. Add a check for s->root
property avoid segfault.
Signed-off-by: Gonglei <address@hidden>
---
hw/usb/dev-mtp.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/hw/usb/dev-mtp.c b/hw/usb/dev-mtp.c
index c9c1f32..809b1cb 100644
--- a/hw/usb/dev-mtp.c
+++ b/hw/usb/dev-mtp.c
@@ -1071,6 +1071,10 @@ static void usb_mtp_realize(USBDevice *dev, Error **errp)
usb_desc_init(dev);
QTAILQ_INIT(&s->objects);
if (s->desc == NULL) {
+ if (s->root == NULL) {
+ error_setg(errp, "usb-mtp: x-root property must be configured");
+ return;
+ }
s->desc = strrchr(s->root, '/');
if (s->desc && s->desc[0]) {
s->desc = g_strdup(s->desc + 1);
--
1.7.12.4
- [Qemu-devel] [PATCH 06/14] usb: usb-mtp QOMify, (continued)
- [Qemu-devel] [PATCH 06/14] usb: usb-mtp QOMify, arei.gonglei, 2015/05/06
- [Qemu-devel] [PATCH 09/14] usb: usb-ccid QOMify, arei.gonglei, 2015/05/06
- [Qemu-devel] [PATCH 03/14] usb: usb-bt QOMify, arei.gonglei, 2015/05/06
- [Qemu-devel] [PATCH 04/14] usb: usb-hid QOMify, arei.gonglei, 2015/05/06
- [Qemu-devel] [PATCH 11/14] usb: usb-uas QOMify, arei.gonglei, 2015/05/06
- [Qemu-devel] [PATCH 08/14] usb: usb-net QOMify, arei.gonglei, 2015/05/06
- [Qemu-devel] [PATCH 05/14] usb: usb-hub QOMify, arei.gonglei, 2015/05/06
- [Qemu-devel] [PATCH 02/14] usb: usb-audio QOMify, arei.gonglei, 2015/05/06
- [Qemu-devel] [PATCH 10/14] usb: usb-storage QOMify, arei.gonglei, 2015/05/06
- [Qemu-devel] [PATCH 13/14] usb: usb-redir QOMify, arei.gonglei, 2015/05/06
- [Qemu-devel] [PATCH 07/14] usb-mtp: fix segmentation fault,
arei.gonglei <=
- [Qemu-devel] [PATCH 14/14] usb: usb-serial QOMify, arei.gonglei, 2015/05/06