Patch "qlcnic: fix unchecked return value" has been added to the 4.4-stable tree

This is a note to let you know that I've just added the patch titled

qlcnic: fix unchecked return value

to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
qlcnic-fix-unchecked-return-value.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Pan Bian <[email protected]>
Date: Sun, 23 Apr 2017 20:04:04 +0800
Subject: qlcnic: fix unchecked return value

From: Pan Bian <[email protected]>

[ Upstream commit 91ec701a553cb3de470fd471c6fefe3ad1125455 ]

Function pci_find_ext_capability() may return 0, which is an invalid address. In function qlcnic_sriov_virtid_fn(), its return value is used without validation. This may result in invalid memory access bugs. This patch fixes the bug.

---
 drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c |    2 ++
 1 file changed, 2 insertions(+)

@@ -127,6 +127,8 @@ static int qlcnic_sriov_virtid_fn(struct
 		return 0;
 
 	pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_SRIOV);
+	if (!pos)
+		return 0;
 	pci_read_config_word(dev, pos + PCI_SRIOV_VF_OFFSET, &offset);
 	pci_read_config_word(dev, pos + PCI_SRIOV_VF_STRIDE, &stride);
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/mt7601u-check-return-value-of-alloc_skb.patch queue-4.4/rndis_wlan-add-return-value-validation.patch queue-4.4/staging-wilc1000-fix-unchecked-return-value.patch queue-4.4/qlcnic-fix-unchecked-return-value.patch queue-4.4/wan-pc300too-abort-path-on-failure.patch