From 6b38c177f32cd01ac98f2cdd4926502d2abae163 Mon Sep 17 00:00:00 2001 From: Jonathan Solnit Date: Fri, 21 Jul 2017 19:02:53 +0000 Subject: Revert "dm ioctl: prevent stack leak in dm ioctl call" This reverts commit 1d5b6ba1bfe0ce28eca6fa79a74d0088e706e63e. Bug: 35644370 Change-Id: I0880d5f11cd22547934a13b7aa564a4102b95aa9 Signed-off-by: Jonathan Solnit --- drivers/md/dm-ioctl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/md') diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c index f21bc46cd..81a79b739 100644 --- a/drivers/md/dm-ioctl.c +++ b/drivers/md/dm-ioctl.c @@ -1767,7 +1767,7 @@ static int ctl_ioctl(uint command, struct dm_ioctl __user *user) if (r) goto out; - param->data_size = offsetof(struct dm_ioctl, data); + param->data_size = sizeof(*param); r = fn(param, input_param_size); if (unlikely(param->flags & DM_BUFFER_FULL_FLAG) && -- cgit v1.2.3