netdev - [PATCH net-next 2/4] qlcnic: Fix NULL dereference in error path.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue,  2 Apr 2013 11:34:41 -0400
From:	Rajesh Borundia <rajesh.borundia@...gic.com>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org, Dept_NX_Linux_NIC_Driver@...gic.com
Subject: [PATCH net-next 2/4] qlcnic: Fix NULL dereference in error path.

o Fix for smatch tool reported error
   drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c:2029
   qlcnic_probe() error: potential NULL dereference 'adapter'.
o While returning from an error path in probe, adapter is not
  initialized. So do not access adapter in cleanup path.

Signed-off-by: Rajesh Borundia <rajesh.borundia@...gic.com>
---
 drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c |   11 +++++------
 1 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
index 3ee593e..0d00b2b 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
@@ -546,11 +546,10 @@ void qlcnic_teardown_intr(struct qlcnic_adapter *adapter)
 	}
 }
 
-static void
-qlcnic_cleanup_pci_map(struct qlcnic_adapter *adapter)
+static void qlcnic_cleanup_pci_map(struct qlcnic_hardware_context *ahw)
 {
-	if (adapter->ahw->pci_base0 != NULL)
-		iounmap(adapter->ahw->pci_base0);
+	if (ahw->pci_base0 != NULL)
+		iounmap(ahw->pci_base0);
 }
 
 static int qlcnic_get_act_pci_func(struct qlcnic_adapter *adapter)
@@ -2026,7 +2025,7 @@ err_out_free_netdev:
 	free_netdev(netdev);
 
 err_out_iounmap:
-	qlcnic_cleanup_pci_map(adapter);
+	qlcnic_cleanup_pci_map(ahw);
 
 err_out_free_hw_res:
 	kfree(ahw);
@@ -2083,7 +2082,7 @@ static void qlcnic_remove(struct pci_dev *pdev)
 
 	qlcnic_remove_sysfs(adapter);
 
-	qlcnic_cleanup_pci_map(adapter);
+	qlcnic_cleanup_pci_map(adapter->ahw);
 
 	qlcnic_release_firmware(adapter);
 
-- 
1.6.3.3

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html