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From: Dan Carpenter <error27@gmail.com>
To: Eric Van Hensbergen <ericvh@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>,
	Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>,
	"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
	"M. Mohan Kumar" <mohan@in.ibm.com>,
	"open list:NETWORKING [GENERAL]" <netdev@vger.kernel.org>,
	kernel-janitors@vger.kernel.org
Subject: [patch 1/2] 9p: move dereference after NULL check
Date: Fri, 26 Aug 2011 19:55:59 +0300	[thread overview]
Message-ID: <20110826165559.GE3775@shale.localdomain> (raw)

We dereferenced "req->tc" and "req->rc" before checking for NULL.

Signed-off-by: Dan Carpenter <error27@gmail.com>

diff --git a/net/9p/client.c b/net/9p/client.c
index 3f8c046..b0bcace 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -248,10 +248,8 @@ static struct p9_req_t *p9_tag_alloc(struct p9_client *c, u16 tag, int max_size)
 		init_waitqueue_head(req->wq);
 		req->tc = kmalloc(sizeof(struct p9_fcall) + alloc_msize,
 				  GFP_NOFS);
-		req->tc->capacity = alloc_msize;
 		req->rc = kmalloc(sizeof(struct p9_fcall) + alloc_msize,
 				  GFP_NOFS);
-		req->rc->capacity = alloc_msize;
 		if ((!req->tc) || (!req->rc)) {
 			printk(KERN_ERR "Couldn't grow tag array\n");
 			kfree(req->tc);
@@ -261,6 +259,8 @@ static struct p9_req_t *p9_tag_alloc(struct p9_client *c, u16 tag, int max_size)
 			req->wq = NULL;
 			return ERR_PTR(-ENOMEM);
 		}
+		req->tc->capacity = alloc_msize;
+		req->rc->capacity = alloc_msize;
 		req->tc->sdata = (char *) req->tc + sizeof(struct p9_fcall);
 		req->rc->sdata = (char *) req->rc + sizeof(struct p9_fcall);
 	}

             reply	other threads:[~2011-08-26 16:58 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-08-26 16:55 Dan Carpenter [this message]
2011-08-30  7:39 ` [patch 1/2] 9p: move dereference after NULL check Aneesh Kumar K.V
2011-09-07 15:31 ` Venkateswararao Jujjuri

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