From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Tong Zhang <ztong0001@gmail.com>,
"David S . Miller" <davem@davemloft.net>,
Sasha Levin <sashal@kernel.org>,
linux-atm-general@lists.sourceforge.net, netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 5.4 20/37] atm: uPD98402: fix incorrect allocation
Date: Tue, 16 Mar 2021 20:57:45 -0400 [thread overview]
Message-ID: <20210317005802.725825-20-sashal@kernel.org> (raw)
In-Reply-To: <20210317005802.725825-1-sashal@kernel.org>
From: Tong Zhang <ztong0001@gmail.com>
[ Upstream commit 3153724fc084d8ef640c611f269ddfb576d1dcb1 ]
dev->dev_data is set in zatm.c, calling zatm_start() will overwrite this
dev->dev_data in uPD98402_start() and a subsequent PRIV(dev)->lock
(i.e dev->phy_data->lock) will result in a null-ptr-dereference.
I believe this is a typo and what it actually want to do is to allocate
phy_data instead of dev_data.
Signed-off-by: Tong Zhang <ztong0001@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/atm/uPD98402.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/atm/uPD98402.c b/drivers/atm/uPD98402.c
index 7850758b5bb8..239852d85558 100644
--- a/drivers/atm/uPD98402.c
+++ b/drivers/atm/uPD98402.c
@@ -211,7 +211,7 @@ static void uPD98402_int(struct atm_dev *dev)
static int uPD98402_start(struct atm_dev *dev)
{
DPRINTK("phy_start\n");
- if (!(dev->dev_data = kmalloc(sizeof(struct uPD98402_priv),GFP_KERNEL)))
+ if (!(dev->phy_data = kmalloc(sizeof(struct uPD98402_priv),GFP_KERNEL)))
return -ENOMEM;
spin_lock_init(&PRIV(dev)->lock);
memset(&PRIV(dev)->sonet_stats,0,sizeof(struct k_sonet_stats));
--
2.30.1
next prev parent reply other threads:[~2021-03-17 1:02 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-17 0:57 [PATCH AUTOSEL 5.4 01/37] net: fec: ptp: avoid register access when ipg clock is disabled Sasha Levin
2021-03-17 0:57 ` [PATCH AUTOSEL 5.4 03/37] atm: eni: dont release is never initialized Sasha Levin
2021-03-17 0:57 ` [PATCH AUTOSEL 5.4 04/37] atm: lanai: dont run lanai_dev_close if not open Sasha Levin
2021-03-17 0:57 ` [PATCH AUTOSEL 5.4 05/37] Revert "r8152: adjust the settings about MAC clock speed down for RTL8153" Sasha Levin
2021-03-17 0:57 ` [PATCH AUTOSEL 5.4 07/37] ixgbe: Fix memleak in ixgbe_configure_clsu32 Sasha Levin
2021-03-17 0:57 ` [PATCH AUTOSEL 5.4 08/37] net: tehuti: fix error return code in bdx_probe() Sasha Levin
2021-03-17 0:57 ` [PATCH AUTOSEL 5.4 09/37] net: intel: iavf: fix error return code of iavf_init_get_resources() Sasha Levin
2021-03-17 0:57 ` [PATCH AUTOSEL 5.4 10/37] sun/niu: fix wrong RXMAC_BC_FRM_CNT_COUNT count Sasha Levin
2021-03-17 0:57 ` [PATCH AUTOSEL 5.4 11/37] gianfar: fix jumbo packets+napi+rx overrun crash Sasha Levin
2021-03-17 0:57 ` [PATCH AUTOSEL 5.4 17/37] net: hisilicon: hns: fix error return code of hns_nic_clear_all_rx_fetch() Sasha Levin
2021-03-17 0:57 ` [PATCH AUTOSEL 5.4 18/37] net: wan: fix error return code of uhdlc_init() Sasha Levin
2021-03-17 0:57 ` [PATCH AUTOSEL 5.4 19/37] net: davicom: Use platform_get_irq_optional() Sasha Levin
2021-03-17 0:57 ` Sasha Levin [this message]
2021-03-17 0:57 ` [PATCH AUTOSEL 5.4 21/37] atm: idt77252: fix null-ptr-dereference Sasha Levin
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