netdev - [patch] SUNRPC: off by one in BUG

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Message-ID: <20141029084416.GC8939@mwanda>
Date:	Wed, 29 Oct 2014 11:44:16 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	"J. Bruce Fields" <bfields@...ldses.org>
Cc:	Trond Myklebust <trond.myklebust@...marydata.com>,
	"David S. Miller" <davem@...emloft.net>, linux-nfs@...r.kernel.org,
	netdev@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [patch] SUNRPC: off by one in BUG_ON()

The m->pool_to[] array has "maxpools" number of elements.  It's
allocated in svc_pool_map_alloc_arrays() which we called earlier in the
function.  This test should be >= instead of >.

Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
---
This is very old code, but hopefully the off by one doesn't affect
runtime.

diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index ca8a795..349c98f 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -189,7 +189,7 @@ svc_pool_map_init_percpu(struct svc_pool_map *m)
 		return err;
 
 	for_each_online_cpu(cpu) {
-		BUG_ON(pidx > maxpools);
+		BUG_ON(pidx >= maxpools);
 		m->to_pool[cpu] = pidx;
 		m->pool_to[pidx] = cpu;
 		pidx++;
--
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