netdev - [PATCH] tg3: fix error handling in tg3

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-next>] [day] [month] [year] [list]

Date:	Thu,  3 Nov 2011 19:36:43 +0900
From:	Akinobu Mita <akinobu.mita@...il.com>
To:	netdev@...r.kernel.org
Cc:	Akinobu Mita <akinobu.mita@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Matt Carlson <mcarlson@...adcom.com>,
	Michael Chan <mchan@...adcom.com>
Subject: [PATCH] tg3: fix error handling in tg3_open

If one of the request_irq calls fails in tg3_open, all interrupts
allocated with request_irq should be freed before returning error.

But it accidentally attempts to free the same invalid IRQ repeatedly.

Cc: "David S. Miller" <davem@...emloft.net>
Cc: Matt Carlson <mcarlson@...adcom.com>
Cc: Michael Chan <mchan@...adcom.com>
Cc: netdev@...r.kernel.org
Signed-off-by: Akinobu Mita <akinobu.mita@...il.com>
---
 drivers/net/ethernet/broadcom/tg3.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
index 161cbbb..13c4054 100644
--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -9674,8 +9674,10 @@ static int tg3_open(struct net_device *dev)
 		struct tg3_napi *tnapi = &tp->napi[i];
 		err = tg3_request_irq(tp, i);
 		if (err) {
-			for (i--; i >= 0; i--)
+			for (i--; i >= 0; i--) {
+				tnapi = &tp->napi[i];
 				free_irq(tnapi->irq_vec, tnapi);
+			}
 			break;
 		}
 	}
-- 
1.7.4.4

--
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