From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Aditya Pakki <pakki001@umn.edu>,
"David S . Miller" <davem@davemloft.net>,
Sasha Levin <sashal@kernel.org>,
netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 4.14 03/43] qlcnic: Avoid potential NULL pointer dereference
Date: Mon, 22 Apr 2019 15:46:47 -0400 [thread overview]
Message-ID: <20190422194727.12495-3-sashal@kernel.org> (raw)
In-Reply-To: <20190422194727.12495-1-sashal@kernel.org>
From: Aditya Pakki <pakki001@umn.edu>
[ Upstream commit 5bf7295fe34a5251b1d241b9736af4697b590670 ]
netdev_alloc_skb can fail and return a NULL pointer which is
dereferenced without a check. The patch avoids such a scenario.
Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin (Microsoft) <sashal@kernel.org>
---
drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c
index 7f7deeaf1cf0..da042bc520d4 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c
@@ -1047,6 +1047,8 @@ int qlcnic_do_lb_test(struct qlcnic_adapter *adapter, u8 mode)
for (i = 0; i < QLCNIC_NUM_ILB_PKT; i++) {
skb = netdev_alloc_skb(adapter->netdev, QLCNIC_ILB_PKT_SIZE);
+ if (!skb)
+ break;
qlcnic_create_loopback_buff(skb->data, adapter->mac_addr);
skb_put(skb, QLCNIC_ILB_PKT_SIZE);
adapter->ahw->diag_cnt = 0;
--
2.19.1
next prev parent reply other threads:[~2019-04-22 19:59 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-22 19:46 [PATCH AUTOSEL 4.14 01/43] ARM: dts: bcm283x: Fix hdmi hpd gpio pull Sasha Levin
2019-04-22 19:46 ` [PATCH AUTOSEL 4.14 02/43] s390: limit brk randomization to 32MB Sasha Levin
2019-04-22 19:46 ` Sasha Levin [this message]
2019-04-22 19:46 ` [PATCH AUTOSEL 4.14 04/43] netfilter: nft_set_rbtree: check for inactive element after flag mismatch Sasha Levin
2019-04-22 19:46 ` [PATCH AUTOSEL 4.14 05/43] netfilter: bridge: set skb transport_header before entering NF_INET_PRE_ROUTING Sasha Levin
2019-04-22 19:46 ` [PATCH AUTOSEL 4.14 06/43] s390/qeth: fix race when initializing the IP address table Sasha Levin
2019-04-22 19:46 ` [PATCH AUTOSEL 4.14 07/43] sc16is7xx: missing unregister/delete driver on error in sc16is7xx_init() Sasha Levin
2019-04-22 19:46 ` [PATCH AUTOSEL 4.14 08/43] serial: ar933x_uart: Fix build failure with disabled console Sasha Levin
2019-04-22 19:46 ` [PATCH AUTOSEL 4.14 09/43] KVM: arm/arm64: vgic-its: Take the srcu lock when parsing the memslots Sasha Levin
2019-04-22 19:46 ` [PATCH AUTOSEL 4.14 10/43] usb: gadget: net2280: Fix overrun of OUT messages Sasha Levin
2019-04-22 19:46 ` [PATCH AUTOSEL 4.14 11/43] usb: gadget: net2280: Fix net2280_dequeue() Sasha Levin
2019-04-22 19:46 ` [PATCH AUTOSEL 4.14 12/43] usb: gadget: net2272: Fix net2272_dequeue() Sasha Levin
2019-04-22 19:46 ` [PATCH AUTOSEL 4.14 13/43] ARM: dts: pfla02: increase phy reset duration Sasha Levin
2019-04-22 19:46 ` [PATCH AUTOSEL 4.14 14/43] net: ks8851: Dequeue RX packets explicitly Sasha Levin
2019-04-22 19:46 ` [PATCH AUTOSEL 4.14 15/43] net: ks8851: Reassert reset pin if chip ID check fails Sasha Levin
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 16/43] net: ks8851: Delay requesting IRQ until opened Sasha Levin
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 17/43] net: ks8851: Set initial carrier state to down Sasha Levin
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 18/43] staging: rtl8188eu: Fix potential NULL pointer dereference of kcalloc Sasha Levin
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 19/43] staging: rtlwifi: rtl8822b: fix to avoid potential NULL pointer dereference Sasha Levin
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 20/43] staging: rtl8712: uninitialized memory in read_bbreg_hdl() Sasha Levin
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 21/43] staging: rtlwifi: Fix potential NULL pointer dereference of kzalloc Sasha Levin
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 22/43] net: macb: Add null check for PCLK and HCLK Sasha Levin
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 23/43] net/sched: don't dereference a->goto_chain to read the chain index Sasha Levin
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 24/43] ARM: dts: imx6qdl: Fix typo in imx6qdl-icore-rqs.dtsi Sasha Levin
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 25/43] NFS: Fix a typo in nfs_init_timeout_values() Sasha Levin
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 26/43] net: xilinx: fix possible object reference leak Sasha Levin
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 27/43] net: ibm: " Sasha Levin
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 28/43] net: ethernet: ti: " Sasha Levin
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 29/43] gpio: aspeed: fix a potential NULL pointer dereference Sasha Levin
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 30/43] drm/meson: Fix invalid pointer in meson_drv_unbind() Sasha Levin
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 31/43] drm/meson: Uninstall IRQ handler Sasha Levin
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 32/43] scsi: qla4xxx: fix a potential NULL pointer dereference Sasha Levin
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 33/43] usb: usb251xb: fix to avoid " Sasha Levin
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 34/43] usb: u132-hcd: fix resource leak Sasha Levin
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 35/43] tty: fix NULL pointer issue when tty_port ops is not set Sasha Levin
2019-04-23 5:35 ` Johan Hovold
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 36/43] ceph: fix use-after-free on symlink traversal Sasha Levin
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 37/43] scsi: zfcp: reduce flood of fcrscn1 trace records on multi-element RSCN Sasha Levin
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 38/43] libata: fix using DMA buffers on stack Sasha Levin
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 39/43] gpio: of: Fix of_gpiochip_add() error path Sasha Levin
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 40/43] kconfig/[mn]conf: handle backspace (^H) key Sasha Levin
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 41/43] iommu/amd: Reserve exclusion range in iova-domain Sasha Levin
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 42/43] ptrace: take into account saved_sigmask in PTRACE{GET,SET}SIGMASK Sasha Levin
2019-04-22 19:47 ` [PATCH AUTOSEL 4.14 43/43] leds: pca9532: fix a potential NULL pointer dereference Sasha Levin
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