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 07:58:46 +0000 (09:58 +0200)
commit22ac37c530656eedfeaa2536d7c65e4ff936b8ad
tree40c9791fc524207838caf4dfadaf8cad8afc5986
parent110dea31d48f9e91ce9ab528a82ac61470a27d14
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