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From: Dan Carpenter <dan.carpenter@oracle.com>
To: kernel-janitors@vger.kernel.org
Subject: [patch] sparc32: off by ones in BUG_ON()
Date: Fri, 15 Jul 2016 11:05:33 +0000	[thread overview]
Message-ID: <20160715110533.GA9258@mwanda> (raw)

Smatch complains that these tests are off by one, which is true but not
life threatening.

	arch/sparc/kernel/irq_32.c:169 irq_link()
	error: buffer overflow 'irq_map' 384 <= 384

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

diff --git a/arch/sparc/kernel/irq_32.c b/arch/sparc/kernel/irq_32.c
index a979e99..cac4a55 100644
--- a/arch/sparc/kernel/irq_32.c
+++ b/arch/sparc/kernel/irq_32.c
@@ -165,7 +165,7 @@ void irq_link(unsigned int irq)
 
 	p = &irq_table[irq];
 	pil = p->pil;
-	BUG_ON(pil > SUN4D_MAX_IRQ);
+	BUG_ON(pil >= SUN4D_MAX_IRQ);
 	p->next = irq_map[pil];
 	irq_map[pil] = p;
 
@@ -182,7 +182,7 @@ void irq_unlink(unsigned int irq)
 	spin_lock_irqsave(&irq_map_lock, flags);
 
 	p = &irq_table[irq];
-	BUG_ON(p->pil > SUN4D_MAX_IRQ);
+	BUG_ON(p->pil >= SUN4D_MAX_IRQ);
 	pnext = &irq_map[p->pil];
 	while (*pnext != p)
 		pnext = &(*pnext)->next;

             reply	other threads:[~2016-07-15 11:05 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-07-15 11:05 Dan Carpenter [this message]
2016-07-28  5:53 ` [patch] sparc32: off by ones in BUG_ON() David Miller

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