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vmci_host: get rid of pointless access_ok()
author
Al Viro
<viro@zeniv.linux.org.uk>
Fri, 8 May 2020 03:28:15 +0000
(23:28 -0400)
committer
Al Viro
<viro@zeniv.linux.org.uk>
Fri, 29 May 2020 15:06:38 +0000
(11:06 -0400)
get_user_pages_fast() doesn't need the caller to check that.
NB: reachable only from ioctl(2) and only under USER_DS
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
drivers/misc/vmw_vmci/vmci_host.c
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diff --git
a/drivers/misc/vmw_vmci/vmci_host.c
b/drivers/misc/vmw_vmci/vmci_host.c
index
ce16d6b
..
2d8328d
100644
(file)
--- a/
drivers/misc/vmw_vmci/vmci_host.c
+++ b/
drivers/misc/vmw_vmci/vmci_host.c
@@
-233,8
+233,6
@@
static int vmci_host_setup_notify(struct vmci_ctx *context,
* about the size.
*/
BUILD_BUG_ON(sizeof(bool) != sizeof(u8));
- if (!access_ok((void __user *)uva, sizeof(u8)))
- return VMCI_ERROR_GENERIC;
/*
* Lock physical page backing a given user VA.