Re: [PATCH] staging: usbip: vhci_hcd: Fixed oops during removal of vhci_hcd
On Tue, Sep 18, 2012 at 10:16:56AM +0530, navin patidar wrote: 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. Obviously, the same question would apply here. Why don't you do this in the shutdown function? regards, dan carpenter -- To unsubscribe from this list: send the line unsubscribe linux-usb in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[PATCH] staging: usbip: vhci_hcd: Fixed oops during removal of vhci_hcd
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 nav...@cdac.in --- 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-usb in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[PATCH] staging: usbip: vhci_hcd: Fixed oops during removal of vhci_hcd
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 nav...@cdac.in --- drivers/staging/usbip/vhci_hcd.c |3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/staging/usbip/vhci_hcd.c b/drivers/staging/usbip/vhci_hcd.c index 6076f42..b1f427c 100644 --- a/drivers/staging/usbip/vhci_hcd.c +++ b/drivers/staging/usbip/vhci_hcd.c @@ -858,6 +858,9 @@ static void vhci_device_reset(struct usbip_device *ud) if (vdev-udev) usb_put_dev(vdev-udev); vdev-udev = NULL; + /* Reset kernel thread pointers */ + ud-tcp_rx = NULL; + ud-tcp_tx = NULL; ud-tcp_socket = NULL; ud-status = VDEV_ST_NULL; -- 1.7.9.5 --- This e-mail is for the sole use of the intended recipient(s) and may contain confidential and privileged information. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies and the original message. Any unauthorized review, use, disclosure, dissemination, forwarding, printing or copying of this email is strictly prohibited and appropriate legal action will be taken. --- -- To unsubscribe from this list: send the line unsubscribe linux-usb in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
