From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Wed, 29 Oct 2014 08:45:04 +0000 (+0300)
Subject: percpu: off by one in BUG_ON()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=9f295664e2f2cdf53c596f74bcf3f644cae9fecc;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

percpu: off by one in BUG_ON()

The unit_map[] array has "nr_cpu_ids" number of elements.  It's
allocated a few lines earlier in the function.  So this test should be
>= instead of >.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
---

diff --git a/mm/percpu.c b/mm/percpu.c
index 014bab65e0ff..d39e2f4e335c 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1591,7 +1591,7 @@ int __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai,
 			if (cpu == NR_CPUS)
 				continue;
 
-			PCPU_SETUP_BUG_ON(cpu > nr_cpu_ids);
+			PCPU_SETUP_BUG_ON(cpu >= nr_cpu_ids);
 			PCPU_SETUP_BUG_ON(!cpu_possible(cpu));
 			PCPU_SETUP_BUG_ON(unit_map[cpu] != UINT_MAX);