]> git.ipfire.org Git - thirdparty/kernel/stable.git/commit
nds32: fix access_ok() checks in get/put_user
authorArnd Bergmann <arnd@arndb.de>
Mon, 14 Feb 2022 14:48:14 +0000 (15:48 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 28 Mar 2022 06:41:44 +0000 (08:41 +0200)
commit87d82483f1cf34e114ddcfe3da24fd4a4318ed97
treee6c074be0516aa3f748639046a64240e72f040c4
parent273ebddc5fda2967492cb0b6cdd7d81cfb821b76
nds32: fix access_ok() checks in get/put_user

commit 8926d88ced46700bf6117ceaf391480b943ea9f4 upstream.

The get_user()/put_user() functions are meant to check for
access_ok(), while the __get_user()/__put_user() functions
don't.

This broke in 4.19 for nds32, when it gained an extraneous
check in __get_user(), but lost the check it needs in
__put_user().

Fixes: 487913ab18c2 ("nds32: Extract the checking and getting pointer to a macro")
Cc: stable@vger.kernel.org @ v4.19+
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/nds32/include/asm/uaccess.h