[PATCH] staging: usbip: vhci_hcd: Fixed oops during removal of vhci_hcd

[navin patidar]

In response to "usbip detach -p [port_number]" user command,vhci_shoutdown_connection gets
executed which kills tcp_tx,tcp_rx kernel threads and then vhci_device_reset resets
all usb_device struct variables except kernel thread pointers.

so, at the time of vhci_hcd removal vhci_shoutdown_connection tries to kill kernel threads
which are already killed.

Signed-off-by: navin patidar <navinp@xxxxxxx>
---
 drivers/staging/usbip/vhci_hcd.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/staging/usbip/vhci_hcd.c b/drivers/staging/usbip/vhci_hcd.c
index 12a9a5f..eea8298 100644
--- a/drivers/staging/usbip/vhci_hcd.c
+++ b/drivers/staging/usbip/vhci_hcd.c
@@ -859,6 +859,8 @@ static void vhci_device_reset(struct usbip_device *ud)
 		usb_put_dev(vdev->udev);
 	vdev->udev = NULL;
 
+	ud->tcp_rx = NULL;
+	ud->tcp_tx = NULL;
 	ud->tcp_socket = NULL;
 	ud->status = VDEV_ST_NULL;
 
-- 
1.7.9.5

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/