Commit 50fbd977 authored Apr 05, 2016 by Sudip Mukherjee Committed by Kees Cook Apr 06, 2016

lkdtm: fix memory leak of val



This case is supposed to read from a page after after it is freed, but
it missed freeing val if we are not able to get a free page.

Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Signed-off-by: Kees Cook <keescook@chromium.org>

parent c4004b02

drivers/misc/lkdtm.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -498,12 +498,13 @@ static void lkdtm_do_action(enum ctype which)
		}
		case CT_READ_BUDDY_AFTER_FREE: {
		unsigned long p = __get_free_page(GFP_KERNEL);
		int saw, *val = kmalloc(1024, GFP_KERNEL);
		int saw, *val;
		int *base;

		if (!p)
		break;

		val = kmalloc(1024, GFP_KERNEL);
		if (!val)
		break;

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