linux-kernel - [PATCH 3.15 19/66] RDMA/cxgb4: Fix memory leaks in c4iw

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Date:	Fri,  4 Jul 2014 15:14:18 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org,
	Christoph Jaeger <christophjaeger@...ux.com>,
	Steve Wise <swise@...ngridcomputing.com>,
	Roland Dreier <roland@...estorage.com>
Subject: [PATCH 3.15 19/66] RDMA/cxgb4: Fix memory leaks in c4iw_alloc() error paths

3.15-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Christoph Jaeger <christophjaeger@...ux.com>

commit 65b302ad31b02b0790417f4e65833af494cb35ce upstream.

c4iw_alloc() bails out without freeing the storage that 'devp' points to.

Picked up by Coverity - CID 1204241.

Fixes: fa658a98a2 ("RDMA/cxgb4: Use the BAR2/WC path for kernel QPs and T5 devices")
Signed-off-by: Christoph Jaeger <christophjaeger@...ux.com>
Acked-by: Steve Wise <swise@...ngridcomputing.com>
Signed-off-by: Roland Dreier <roland@...estorage.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/infiniband/hw/cxgb4/device.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/infiniband/hw/cxgb4/device.c
+++ b/drivers/infiniband/hw/cxgb4/device.c
@@ -736,6 +736,7 @@ static struct c4iw_dev *c4iw_alloc(const
 			pci_resource_len(devp->rdev.lldi.pdev, 2));
 		if (!devp->rdev.bar2_kva) {
 			pr_err(MOD "Unable to ioremap BAR2\n");
+			ib_dealloc_device(&devp->ibdev);
 			return ERR_PTR(-EINVAL);
 		}
 	} else if (ocqp_supported(infop)) {
@@ -747,6 +748,7 @@ static struct c4iw_dev *c4iw_alloc(const
 			devp->rdev.lldi.vr->ocq.size);
 		if (!devp->rdev.oc_mw_kva) {
 			pr_err(MOD "Unable to ioremap onchip mem\n");
+			ib_dealloc_device(&devp->ibdev);
 			return ERR_PTR(-EINVAL);
 		}
 	}


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