From: Xi Wang <xi.wang@gmail.com>
Date: Mon, 9 Apr 2012 19:48:55 +0000 (-0400)
Subject: usb: usbtest: avoid integer overflow in test_ctrl_queue()
X-Git-Tag: v3.4-rc4~14^2~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e65cdfae71cecec0fcd43a3f9ac8b5e4ae52db08;p=pandora-kernel.git

usb: usbtest: avoid integer overflow in test_ctrl_queue()

Avoid overflowing context.count = param->sglen * param->iterations,
where both `sglen' and `iterations' are from userspace.

| test_ctrl_queue()
| usbtest_ioctl()

Keep -EOPNOTSUPP for error code.

Signed-off-by: Xi Wang <xi.wang@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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