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Commit 47bb7899 authored by dean gaudet's avatar dean gaudet Committed by Linus Torvalds
Browse files

[PATCH] off-by-1 in kernel/power/main.c 



There's an off-by-1 in kernel/power/main.c:state_store() ...  if your
kernel just happens to have some non-zero data at pm_states[PM_SUSPEND_MAX]
(i.e.  one past the end of the array) then it'll let you write anything you
want to /sys/power/state and in response the box will enter S5.

Signed-off-by: default avatardean gaudet <dean@arctic.org>
Acked-by: default avatarPavel Machek <pavel@ucw.cz>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 37e53db8

kernel/power/main.c

+1 −1
Original line number Diff line number Diff line
@@ -272,7 +272,7 @@ static ssize_t state_store(struct subsystem * subsys, const char * buf, size_t n 
		if (*s && !strncmp(buf, *s, len))

			break;

	}

	if (*s)

	if (state < PM_SUSPEND_MAX && *s)

		error = enter_state(state);

	else

		error = -EINVAL;