linux-kernel - [PATCH tip/core/rcu 09/41] crypto/pcrypt: Replace synchronize_rcu_bh() with synchronize

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:   Sun, 11 Nov 2018 11:43:38 -0800
From:   "Paul E. McKenney" <paulmck@...ux.ibm.com>
To:     linux-kernel@...r.kernel.org
Cc:     mingo@...nel.org, jiangshanlai@...il.com, dipankar@...ibm.com,
        akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
        josh@...htriplett.org, tglx@...utronix.de, peterz@...radead.org,
        rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com,
        fweisbec@...il.com, oleg@...hat.com, joel@...lfernandes.org,
        "Paul E. McKenney" <paulmck@...ux.ibm.com>,
        Steffen Klassert <steffen.klassert@...unet.com>,
        linux-crypto@...r.kernel.org
Subject: [PATCH tip/core/rcu 09/41] crypto/pcrypt: Replace synchronize_rcu_bh() with synchronize_rcu()

Now that synchronize_rcu() waits for bh-disable regions of code as
well as RCU read-side critical sections, the synchronize_rcu_bh() in
pcrypt_cpumask_change_notify() can be replaced by synchronize_rcu().
This commit therefore makes this change.

Signed-off-by: Paul E. McKenney <paulmck@...ux.ibm.com>
Cc: Steffen Klassert <steffen.klassert@...unet.com>
Cc: <linux-crypto@...r.kernel.org>
---
 crypto/pcrypt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crypto/pcrypt.c b/crypto/pcrypt.c
index f8ec3d4ba4a8..8eb3c4c9ff67 100644
--- a/crypto/pcrypt.c
+++ b/crypto/pcrypt.c
@@ -382,7 +382,7 @@ static int pcrypt_cpumask_change_notify(struct notifier_block *self,
 
 	cpumask_copy(new_mask->mask, cpumask->cbcpu);
 	rcu_assign_pointer(pcrypt->cb_cpumask, new_mask);
-	synchronize_rcu_bh();
+	synchronize_rcu();
 
 	free_cpumask_var(old_mask->mask);
 	kfree(old_mask);
-- 
2.17.1