linux-kernel - [PATCH 4.20 011/127] octeontx2-af: Fix a resource leak in an error handling path in cgx

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Date:   Thu, 24 Jan 2019 20:19:17 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 4.20 011/127] octeontx2-af: Fix a resource leak in an error handling path in cgx_probe()

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

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

From: Christophe JAILLET <christophe.jaillet@...adoo.fr>

[ Upstream commit 1492623e837fe7ca6296f7f5411328307e242771 ]

If an error occurs after the call to 'pci_alloc_irq_vectors()', we must
call 'pci_free_irq_vectors()' in order to avoid a	resource leak.

The same sequence is already in place in the corresponding 'cgx_remove()'
function.

Fixes: 1463f382f58d ("octeontx2-af: Add support for CGX link management")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/ethernet/marvell/octeontx2/af/cgx.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
@@ -668,7 +668,7 @@ static int cgx_probe(struct pci_dev *pde
 	if (!cgx->reg_base) {
 		dev_err(dev, "CGX: Cannot map CSR memory space, aborting\n");
 		err = -ENOMEM;
-		goto err_release_regions;
+		goto err_free_irq_vectors;
 	}
 
 	nvec = CGX_NVEC;
@@ -693,6 +693,8 @@ static int cgx_probe(struct pci_dev *pde
 err_release_lmac:
 	cgx_lmac_exit(cgx);
 	list_del(&cgx->cgx_list);
+err_free_irq_vectors:
+	pci_free_irq_vectors(pdev);
 err_release_regions:
 	pci_release_regions(pdev);
 err_disable_device: