netdev - [PATCH] zorro8390: Fix read buffer overflow in zorro8390_init

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Message-ID: <4A7ED679.3020503@gmail.com>
Date:	Sun, 09 Aug 2009 16:00:25 +0200
From:	Roel Kluin <roel.kluin@...il.com>
To:	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH] zorro8390: Fix read buffer overflow in zorro8390_init_one()

Prevent read from cards[-1] when no card was found.

Signed-off-by: Roel Kluin <roel.kluin@...il.com>
---
is ENODEV appropriate here?

diff --git a/drivers/net/zorro8390.c b/drivers/net/zorro8390.c
index 37c84e3..55502e1 100644
--- a/drivers/net/zorro8390.c
+++ b/drivers/net/zorro8390.c
@@ -120,6 +120,9 @@ static int __devinit zorro8390_init_one(struct zorro_dev *z,
     for (i = ARRAY_SIZE(cards)-1; i >= 0; i--)
 	if (z->id == cards[i].id)
 	    break;
+    if (i < 0)
+        return -ENODEV;
+    
     board = z->resource.start;
     ioaddr = board+cards[i].offset;
     dev = alloc_ei_netdev();
--
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