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  PHC 
Open Source and information security mailing list archives
 
Hash Suite for Android: free password hash cracker in your pocket
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Tue,  6 Nov 2007 13:33:28 -0800
From:	Jay Vosburgh <fubar@...ibm.com>
To:	netdev@...r.kernel.org
Cc:	jgarzik@...ox.com, Jay Vosburgh <fubar@...ibm.com>
Subject: [PATCH 1/2] bonding: fix rtnl locking merge error

	Looks like I incorrectly merged one of the rtnl lock changes,
so that one function, bonding_show_active_slave, held rtnl but didn't
release it, and another, bonding_store_active_slave, never held rtnl but
did release it.

	Fixed so the first function doesn't mess with rtnl, and the
second correctly acquires and releases rtnl.

	Bug reported by Moni Shoua <monis@...taire.com>


Signed-off-by: Jay Vosburgh <fubar@...ibm.com>

---
 drivers/net/bonding/bond_sysfs.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index 7a06ade..b29330d 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -1193,8 +1193,6 @@ static ssize_t bonding_show_active_slave(struct device *d,
 	struct bonding *bond = to_bond(d);
 	int count;
 
-	rtnl_lock();
-
 	read_lock(&bond->curr_slave_lock);
 	curr = bond->curr_active_slave;
 	read_unlock(&bond->curr_slave_lock);
@@ -1216,7 +1214,9 @@ static ssize_t bonding_store_active_slave(struct device *d,
         struct slave *new_active = NULL;
 	struct bonding *bond = to_bond(d);
 
+	rtnl_lock();
 	write_lock_bh(&bond->lock);
+
 	if (!USES_PRIMARY(bond->params.mode)) {
 		printk(KERN_INFO DRV_NAME
 		       ": %s: Unable to change active slave; %s is in mode %d\n",
-- 
1.5.3.4.206.g58ba4-dirty

-
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