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Message-id: <1442842450-29769-3-git-send-email-a.hajda@samsung.com> Date: Mon, 21 Sep 2015 15:33:34 +0200 From: Andrzej Hajda <a.hajda@...sung.com> To: linux-kernel@...r.kernel.org Cc: Andrzej Hajda <a.hajda@...sung.com>, Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>, Marek Szyprowski <m.szyprowski@...sung.com>, Pawel Moll <pawel.moll@....com>, Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net> Subject: [PATCH 02/38] bus: arm-ccn: fix handling cpumask_any_but return value cpumask_any_but returns value >= nr_cpu_ids if there are no more CPUs. The problem has been detected using proposed semantic patch scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci [1]. [1]: http://permalink.gmane.org/gmane.linux.kernel/2038576 Signed-off-by: Andrzej Hajda <a.hajda@...sung.com> --- drivers/bus/arm-ccn.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/bus/arm-ccn.c b/drivers/bus/arm-ccn.c index 7d9879e..cc322fb 100644 --- a/drivers/bus/arm-ccn.c +++ b/drivers/bus/arm-ccn.c @@ -1184,7 +1184,7 @@ static int arm_ccn_pmu_cpu_notifier(struct notifier_block *nb, if (!cpumask_test_and_clear_cpu(cpu, &dt->cpu)) break; target = cpumask_any_but(cpu_online_mask, cpu); - if (target < 0) + if (target >= nr_cpu_ids) break; perf_pmu_migrate_context(&dt->pmu, cpu, target); cpumask_set_cpu(target, &dt->cpu); -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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