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Commit c3efeaa3 authored by Al Viro's avatar Al Viro Committed by Greg Kroah-Hartman
Browse files

getname_kernel() needs to make sure that ->name != ->iname in long case 



commit 30ce4d19 upstream.

missed it in "kill struct filename.separate" several years ago.

Cc: stable@vger.kernel.org
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent adea72f0

fs/namei.c

+2 −1
Original line number Diff line number Diff line
@@ -222,9 +222,10 @@ getname_kernel(const char * filename) 
	if (len <= EMBEDDED_NAME_MAX) {

		result->name = (char *)result->iname;

	} else if (len <= PATH_MAX) {

		const size_t size = offsetof(struct filename, iname[1]);

		struct filename *tmp;



		tmp = kmalloc(sizeof(*tmp), GFP_KERNEL);

		tmp = kmalloc(size, GFP_KERNEL);

		if (unlikely(!tmp)) {

			__putname(result);

			return ERR_PTR(-ENOMEM);