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  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:	Mon, 24 Mar 2014 00:41:13 +0530
From:	Monam Agarwal <monamagarwal123@...il.com>
To:	stephen@...workplumber.org, davem@...emloft.net,
	bridge@...ts.linux-foundation.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] net/bridge: Use RCU_INIT_POINTER(x, NULL) in br_vlan.c

This patch replaces rcu_assign_pointer(x, NULL) with RCU_INIT_POINTER(x, NULL)

The rcu_assign_pointer() ensures that the initialization of a structure       
is carried out before storing a pointer to that structure. 
And in the case of the NULL pointer, there is no structure to initialize. 
So, rcu_assign_pointer(p, NULL) can be safely converted to RCU_INIT_POINTER(p, NULL)

Signed-off-by: Monam Agarwal <monamagarwal123@...il.com>
---
 net/bridge/br_vlan.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c
index 8249ca7..5d5b101 100644
--- a/net/bridge/br_vlan.c
+++ b/net/bridge/br_vlan.c
@@ -99,9 +99,9 @@ static int __vlan_del(struct net_port_vlans *v, u16 vid)
 	v->num_vlans--;
 	if (bitmap_empty(v->vlan_bitmap, VLAN_N_VID)) {
 		if (v->port_idx)
-			rcu_assign_pointer(v->parent.port->vlan_info, NULL);
+			RCU_INIT_POINTER(v->parent.port->vlan_info, NULL);
 		else
-			rcu_assign_pointer(v->parent.br->vlan_info, NULL);
+			RCU_INIT_POINTER(v->parent.br->vlan_info, NULL);
 		kfree_rcu(v, rcu);
 	}
 	return 0;
@@ -113,9 +113,9 @@ static void __vlan_flush(struct net_port_vlans *v)
 	v->pvid = 0;
 	bitmap_zero(v->vlan_bitmap, VLAN_N_VID);
 	if (v->port_idx)
-		rcu_assign_pointer(v->parent.port->vlan_info, NULL);
+		RCU_INIT_POINTER(v->parent.port->vlan_info, NULL);
 	else
-		rcu_assign_pointer(v->parent.br->vlan_info, NULL);
+		RCU_INIT_POINTER(v->parent.br->vlan_info, NULL);
 	kfree_rcu(v, rcu);
 }
 
-- 
1.7.9.5

--
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

Powered by blists - more mailing lists