From: Navid Emamdoost <navid.emamdoost@gmail.com>
Date: Fri, 4 Oct 2019 20:16:48 +0000 (-0500)
Subject: mwifiex: pcie: Fix memory leak in mwifiex_pcie_init_evt_ring
X-Git-Tag: Ubuntu-4.15.0-87.87~327
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=ab051590e1a65c5422bb651d949bf6f849b13a8e;p=mirror_ubuntu-bionic-kernel.git

mwifiex: pcie: Fix memory leak in mwifiex_pcie_init_evt_ring

BugLink: https://bugs.launchpad.net/bugs/1859712

[ Upstream commit d10dcb615c8e29d403a24d35f8310a7a53e3050c ]

In mwifiex_pcie_init_evt_ring, a new skb is allocated which should be
released if mwifiex_map_pci_memory() fails. The release for skb and
card->evtbd_ring_vbase is added.

Fixes: 0732484b47b5 ("mwifiex: separate ring initialization and ring creation routines")
Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Acked-by: Ganapathi Bhat <gbhat@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>
---

diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index 9fff7774ff96..df2a725099ab 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -687,8 +687,11 @@ static int mwifiex_pcie_init_evt_ring(struct mwifiex_adapter *adapter)
 		skb_put(skb, MAX_EVENT_SIZE);
 
 		if (mwifiex_map_pci_memory(adapter, skb, MAX_EVENT_SIZE,
-					   PCI_DMA_FROMDEVICE))
+					   PCI_DMA_FROMDEVICE)) {
+			kfree_skb(skb);
+			kfree(card->evtbd_ring_vbase);
 			return -1;
+		}
 
 		buf_pa = MWIFIEX_SKB_DMA_ADDR(skb);