linux-kernel - Re: [-mm Patch] INFINIBAND: check the return value of kmalloc

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Message-ID: <ada1wfm4jea.fsf@cisco.com>
Date:	Thu, 05 Jul 2007 14:42:37 -0700
From:	Roland Dreier <rdreier@...co.com>
To:	"Jesper Juhl" <jesper.juhl@...il.com>
Cc:	"WANG Cong" <xiyou.wangcong@...il.com>, rolandd@...co.com,
	mshefty@...ips.intel.com, halr@...taire.com,
	"Andrew Morton" <akpm@...l.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Steve Wise <swise@...ngridcomputing.com>
Subject: Re: [-mm Patch] INFINIBAND: check the return value of kmalloc

thanks, I added Jesper's suggestion to the original patch and queued
this for 2.6.23:

(Steve, let me know if this looks OK or not to you)

commit 8d339921a2cb279457dce79f8a308978e0b41b27
Author: WANG Cong <xiyou.wangcong@...il.com>
Date:   Thu Jul 5 14:40:32 2007 -0700

    RDMA/cxgb3: Check return of kmalloc() in iwch_register_device()
    
    Signed-off-by: WANG Cong <xiyou.wangcong@...il.com>
    [ Also remove cast from void * return of kmalloc() as suggested by
      Jesper Juhl <jesper.juhl@...il.com>. ]
    Signed-off-by: Roland Dreier <rolandd@...co.com>

diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.c b/drivers/infiniband/hw/cxgb3/iwch_provider.c
index e7c2c39..44b6ad2 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_provider.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_provider.c
@@ -1163,9 +1163,10 @@ int iwch_register_device(struct iwch_dev *dev)
 	dev->ibdev.post_recv = iwch_post_receive;
 
 
-	dev->ibdev.iwcm =
-	    (struct iw_cm_verbs *) kmalloc(sizeof(struct iw_cm_verbs),
-					   GFP_KERNEL);
+	dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
+	if (!dev->ibdev.icwm)
+		return -ENOMEM;
+
 	dev->ibdev.iwcm->connect = iwch_connect;
 	dev->ibdev.iwcm->accept = iwch_accept_cr;
 	dev->ibdev.iwcm->reject = iwch_reject_cr;
-
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