tools/power/x86/intel-speed-select: Fix off by one check

[ Upstream commit d9f74d98bbec978edbf860f729b531281ba0d8ff ]

Change > MAX_DIE_PER_PACKAGE to >= MAX_DIE_PER_PACKAGE to prevent
accessing one element beyond the end of the array.

Fixes: 7fd786dfbd2c ("tools/power/x86/intel-speed-select: OOB daemon mode")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/tools/power/x86/intel-speed-select/isst-daemon.c b/tools/power/x86/intel-speed-select/isst-daemon.c
index dd372924bc8266c0d1fd46c8bbca51bedd5c33c1..d0400c6684ba93f82bc5e9b9c51dec3ef1568c05 100644 (file)
--- a/tools/power/x86/intel-speed-select/isst-daemon.c
+++ b/tools/power/x86/intel-speed-select/isst-daemon.c
@@ -41,7 +41,7 @@ void process_level_change(int cpu)
        time_t tm;
        int ret;
 
-       if (pkg_id >= MAX_PACKAGE_COUNT || die_id > MAX_DIE_PER_PACKAGE) {
+       if (pkg_id >= MAX_PACKAGE_COUNT || die_id >= MAX_DIE_PER_PACKAGE) {
                debug_printf("Invalid package/die info for cpu:%d\n", cpu);
                return;
        }