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Message-Id: <1455048677-19882-5-git-send-email-linux@rasmusvillemoes.dk> Date: Tue, 9 Feb 2016 21:11:15 +0100 From: Rasmus Villemoes <linux@...musvillemoes.dk> To: Byungho An <bh74.an@...sung.com>, Girish K S <ks.giri@...sung.com>, Vipul Pandya <vipul.pandya@...sung.com> Cc: Rasmus Villemoes <linux@...musvillemoes.dk>, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH 4/5] net: sxgbe: fix error paths in sxgbe_platform_probe() We need to use post-decrement to ensure that irq_dispose_mapping is also called on priv->rxq[0]->irq_no; moreover, if one of the above for loops failed already at i==0 (so we reach one of these labels with that value of i), we'll enter an essentially infinite loop of out-of-bounds accesses. Signed-off-by: Rasmus Villemoes <linux@...musvillemoes.dk> --- drivers/net/ethernet/samsung/sxgbe/sxgbe_platform.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/samsung/sxgbe/sxgbe_platform.c b/drivers/net/ethernet/samsung/sxgbe/sxgbe_platform.c index b02eed12bfc5..73427e29df2a 100644 --- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_platform.c +++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_platform.c @@ -155,11 +155,11 @@ static int sxgbe_platform_probe(struct platform_device *pdev) return 0; err_rx_irq_unmap: - while (--i) + while (i--) irq_dispose_mapping(priv->rxq[i]->irq_no); i = SXGBE_TX_QUEUES; err_tx_irq_unmap: - while (--i) + while (i--) irq_dispose_mapping(priv->txq[i]->irq_no); irq_dispose_mapping(priv->irq); err_drv_remove: -- 2.1.4
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