netdev - [PATCH] macvtap: use set_curren

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 for Android: free password hash cracker in your pocket

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

Message-ID: <CAA7+ByX7Kp+Zh3ZQ2D6rSuhu6WCeqL-1MgDi9gy-0hHizVXncg@mail.gmail.com>
Date:	Tue, 5 Jun 2012 18:46:36 +0800
From:	Hong zhi guo <honkiko@...il.com>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org, arnd@...db.de, zhiguo.hong@....com,
	vikifang@...iper.net
Subject: [PATCH] macvtap: use set_curren_state to ensure mb

replace raw assignment of current->state with
set_current_state(TASK_...) to ensure memory barrier.

Signed-off-by: Hong Zhiguo <honkiko@...il.com>
---
 drivers/net/macvtap.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c
index 2ee56de..62754f6 100644
--- a/drivers/net/macvtap.c
+++ b/drivers/net/macvtap.c
@@ -853,7 +853,7 @@ static ssize_t macvtap_do_read(struct
macvtap_queue *q, struct kiocb *iocb,

 	add_wait_queue(sk_sleep(&q->sk), &wait);
 	while (len) {
-		current->state = TASK_INTERRUPTIBLE;
+		set_current_state(TASK_INTERRUPTIBLE);

 		/* Read frames from the queue */
 		skb = skb_dequeue(&q->sk.sk_receive_queue);
@@ -875,7 +875,7 @@ static ssize_t macvtap_do_read(struct
macvtap_queue *q, struct kiocb *iocb,
 		break;
 	}

-	current->state = TASK_RUNNING;
+	set_current_state(TASK_RUNNING);
 	remove_wait_queue(sk_sleep(&q->sk), &wait);
 	return ret;
 }
-- 
1.7.4.1
--
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