From: Michal Sojka <[email protected]> When `echo Y > /sys/module/usbcore/parameters/usbfs_snoop` and usb_control_msg() returns error, a lot of kernel memory is dumped to dmesg until unhandled kernel paging request occurs.
Signed-off-by: Michal Sojka <[email protected]> Cc: [email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/usb/core/devio.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index a7131ad..37518df 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -802,7 +802,7 @@ static int proc_control(struct dev_state *ps, void __user *arg) tbuf, ctrl.wLength, tmo); usb_lock_device(dev); snoop_urb(dev, NULL, pipe, max(i, 0), min(i, 0), COMPLETE, - tbuf, i); + tbuf, max(i, 0)); if ((i > 0) && ctrl.wLength) { if (copy_to_user(ctrl.data, tbuf, i)) { free_page((unsigned long)tbuf); -- 1.7.4.1 _______________________________________________ stable mailing list [email protected] http://linux.kernel.org/mailman/listinfo/stable
