Hello Nobuo Iwata,
This is a semi-automatic email about new static checker warnings.
The patch 0775a9cbc694: "usbip: vhci extension: modifications to vhci
driver" from Jun 13, 2016, leads to the following Smatch complaint:
drivers/usb/usbip/vhci_hcd.c:466 vhci_tx_urb()
warn: variable dereferenced before check 'vdev' (see line 463)
drivers/usb/usbip/vhci_hcd.c
462 struct vhci_priv *priv;
463 struct vhci_hcd *vhci = vdev_to_vhci(vdev);
^^^^^^^^^^^^^^^^^^
Patch adds a new dereference inside the vdev_to_vhci() function.
464 unsigned long flags;
465
466 if (!vdev) {
^^^^^
Old code assumed "vdev" could be NULL.
467 pr_err("could not get virtual device");
468 return;
regards,
dan carpenter
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