netdev - Re: [PATCH v2.6.22-rc5] cxgb2: handle possible NULL pointer dereferencing, take 2

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Message-ID: <a901b49a0706210600v763f40d3h3dd61fde0bca4a30@mail.gmail.com>
Date:	Thu, 21 Jun 2007 18:30:09 +0530
From:	"pradeep singh" <pradeep.rautela@...il.com>
To:	trivial@...nel.org
Cc:	netdev@...r.kernel.org, akpm@...ux-foundation.org,
	jgarzik@...ox.com, pradeep_s@....in,
	"Dhirendra Singh Kholia" <dhiru.kholia@...il.com>
Subject: Re: [PATCH v2.6.22-rc5] cxgb2: handle possible NULL pointer dereferencing, take 2

On 6/21/07, pradeep singh <pradeep.rautela@...il.com> wrote:
> Hi,
> This is second submission for a possible NULL dereference handling in
> the Chelsio's 10G driver.
>
> Thanks to Jens Axboe for pointing out my mistake of ignoring
> subsequent dereferences in init_one routine.
>
> Thanks
Apologies, looks like patch formatting got messed up during sending.
Resending just in case.

Signed-off-by: Pradeep Singh <pradeep.rautela@...il.com>
---
 drivers/net/chelsio/cxgb2.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/drivers/net/chelsio/cxgb2.c b/drivers/net/chelsio/cxgb2.c
index 231ce43..006c634 100644
--- a/drivers/net/chelsio/cxgb2.c
+++ b/drivers/net/chelsio/cxgb2.c
@@ -1022,6 +1022,11 @@ static int __devinit init_one(struct pci_dev *pdev,
 	mmio_start = pci_resource_start(pdev, 0);
 	mmio_len = pci_resource_len(pdev, 0);
 	bi = t1_get_board_info(ent->driver_data);
+	
+	if (!bi) {
+                CH_ERR("%s: Board info array index out of
range\n",pci_name(pdev));
+                goto out_disable_pdev;
+        }

 	for (i = 0; i < bi->port_number; ++i) {
 		struct net_device *netdev;
-- 
1.4.4.2

[snip]
-- 
Pradeep
-
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