From: Insu Yun <wuninsu@gmail.com>
To: jeffrey.t.kirsher@intel.com, jesse.brandeburg@intel.com,
shannon.nelson@intel.com, carolyn.wyborny@intel.com,
donald.c.skidmore@intel.com, bruce.w.allan@intel.com,
john.ronciak@intel.com, mitch.a.williams@intel.com,
intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Cc: taesoo@gatech.edu, yeongjin.jang@gatech.edu, insu@gatech.edu,
changwoo@gatech.edu, Insu Yun <wuninsu@gmail.com>
Subject: [PATCH] ixgbe: correctly handling failed allocation
Date: Tue, 29 Dec 2015 16:55:17 -0500 [thread overview]
Message-ID: <1451426117-30986-1-git-send-email-wuninsu@gmail.com> (raw)
Since kzalloc can be failed in memory pressure,
NULL derefence could be happened.
Signed-off-by: Insu Yun <wuninsu@gmail.com>
---
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index aed8d02..aa5eda0 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -5331,6 +5331,8 @@ static int ixgbe_sw_init(struct ixgbe_adapter *adapter)
adapter->mac_table = kzalloc(sizeof(struct ixgbe_mac_addr) *
hw->mac.num_rar_entries,
GFP_ATOMIC);
+ if (!adapter->mac_table)
+ return -ENOMEM;
/* Set MAC specific capability flags and exceptions */
switch (hw->mac.type) {
--
1.9.1
next reply other threads:[~2015-12-29 21:55 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-29 21:55 Insu Yun [this message]
2015-12-29 23:51 ` [PATCH] ixgbe: correctly handling failed allocation Alexander Duyck
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