Commit 0ced0c46 authored Dec 09, 2017 by Christophe Leroy Committed by Greg Kroah-Hartman Mar 19, 2018

Fix misannotated out-of-line _copy_to_user()




[ Upstream commit a0e94598e6b6c0d1df6a5fa14eb7c767ca817a20 ]

Destination is a kernel pointer and source - a userland one
in _copy_from_user(); _copy_to_user() is the other way round.

Fixes: d597580d ("generic ...copy_..._user primitives")
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 4117e897

lib/usercopy.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -20,7 +20,7 @@ EXPORT_SYMBOL(_copy_from_user);
		#endif

		#ifndef INLINE_COPY_TO_USER
		unsigned long _copy_to_user(void to, const void __user from, unsigned long n)
		unsigned long _copy_to_user(void __user to, const void from, unsigned long n)
		{
		might_fault();
		if (likely(access_ok(VERIFY_WRITE, to, n))) {