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| author | thompsa <thompsa@FreeBSD.org> | 2009-03-11 04:56:30 +0000 |
|---|---|---|
| committer | thompsa <thompsa@FreeBSD.org> | 2009-03-11 04:56:30 +0000 |
| commit | 02a143df1f2dd43c85a9ce0e383bf785aafebe64 (patch) | |
| tree | c202c7a8abf6de846fcf74f1daff9ada3e117eac /sys/dev/usb | |
| parent | 95651d9cb685937ac5e7b95e62a5cb874fff4a0f (diff) | |
| download | FreeBSD-src-02a143df1f2dd43c85a9ce0e383bf785aafebe64.zip FreeBSD-src-02a143df1f2dd43c85a9ce0e383bf785aafebe64.tar.gz | |
Fix a possible NULL pointer access at controller attach.
Submitted by: Hans Petter Selasky
Diffstat (limited to 'sys/dev/usb')
| -rw-r--r-- | sys/dev/usb/controller/usb_controller.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/dev/usb/controller/usb_controller.c b/sys/dev/usb/controller/usb_controller.c index b91be6c..f835ec1 100644 --- a/sys/dev/usb/controller/usb_controller.c +++ b/sys/dev/usb/controller/usb_controller.c @@ -346,7 +346,8 @@ usb2_bus_attach(struct usb2_proc_msg *pm) err = usb2_probe_and_attach(child, USB_IFACE_INDEX_ANY); if (!err) { - if (!bus->devices[USB_ROOT_HUB_ADDR]->hub) { + if ((bus->devices[USB_ROOT_HUB_ADDR] == NULL) || + (bus->devices[USB_ROOT_HUB_ADDR]->hub == NULL)) { err = USB_ERR_NO_ROOT_HUB; } } |
