• Greg Kroah-Hartman's avatar
    Revert "usb: hub: do not clear BOS field during reset device" · e5bdfd50
    Greg Kroah-Hartman authored
    This reverts commit d8f00cd6.
    
    Tony writes:
    
    This upstream commit is causing an oops:
    d8f00cd6 ("usb: hub: do not clear BOS field during reset device")
    
    This patch has already been included in several -stable kernels.  Here
    are the affected kernels:
    4.5.0-rc4 (current git)
    4.4.2
    4.3.6 (currently in review)
    4.1.18
    3.18.27
    3.14.61
    
    How to reproduce the problem:
    Boot kernel with slub debugging enabled (otherwise memory corruption
    will cause random oopses later instead of immediately)
    Plug in USB 3.0 disk to xhci USB 3.0 port
    dd if=/dev/sdc of=/dev/null bs=65536
    (where /dev/sdc is the USB 3.0 disk)
    Unplug USB cable while dd is still going
    Oops is immediate:
    Reported-by: default avatarTony Battersby <tonyb@cybernetics.com>
    Cc: Du, Changbin <changbin.du@intel.com>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
    e5bdfd50
hub.c 163 KB