linux-kernel - [PATCH 6/9] net/tipc: Switch to kvfree

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]

Message-Id: <20211124110308.2053-7-urezki@gmail.com>
Date:   Wed, 24 Nov 2021 12:03:05 +0100
From:   "Uladzislau Rezki (Sony)" <urezki@...il.com>
To:     LKML <linux-kernel@...r.kernel.org>, RCU <rcu@...r.kernel.org>,
        "Paul E . McKenney" <paulmck@...nel.org>
Cc:     Michal Hocko <mhocko@...e.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Daniel Axtens <dja@...ens.net>,
        Frederic Weisbecker <frederic@...nel.org>,
        Neeraj Upadhyay <neeraju@...eaurora.org>,
        Joel Fernandes <joel@...lfernandes.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        "Theodore Y . Ts'o" <tytso@....edu>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Uladzislau Rezki <urezki@...il.com>,
        Oleksiy Avramchenko <oleksiy.avramchenko@...ymobile.com>,
        Jon Maloy <jmaloy@...hat.com>
Subject: [PATCH 6/9] net/tipc: Switch to kvfree_rcu() API

Instead of invoking a synchronize_rcu() to free a pointer
after a grace period we can directly make use of new API
that does the same but in more efficient way.

CC: Jon Maloy <jmaloy@...hat.com>
Signed-off-by: Uladzislau Rezki (Sony) <urezki@...il.com>
---
 net/tipc/crypto.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/tipc/crypto.c b/net/tipc/crypto.c
index b4d9419a015b..c2d16c40778d 100644
--- a/net/tipc/crypto.c
+++ b/net/tipc/crypto.c
@@ -2391,8 +2391,7 @@ static void tipc_crypto_work_rx(struct work_struct *work)
 			resched = true;
 			break;
 		default:
-			synchronize_rcu();
-			kfree(rx->skey);
+			kvfree_rcu(rx->skey);
 			rx->skey = NULL;
 			break;
 		}
-- 
2.30.2