diff options
| author | Jay Vosburgh <fubar@us.ibm.com> | 2007-06-19 11:12:12 -0700 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-06-20 19:12:41 -0400 |
| commit | 3201e656ce56ed02e9501906c18ffe16ae350a52 (patch) | |
| tree | 8dbe0df57ffb7afd7fe1aac65fcd0ae0600870f0 /drivers/net/bonding/bond_sysfs.c | |
| parent | 3a2c892daaf54b31a70785c2821771e8094188ed (diff) | |
bonding: Fix use after free in unregister path
The following patch (based on a patch from Stephen Hemminger
<shemminger@linux-foundation.org>) removes use after free conditions in
the unregister path for the bonding master. Without this patch, an
operation of the form "echo -bond0 > /sys/class/net/bonding_masters"
would trigger a NULL pointer dereference in sysfs. I was not able to
induce the failure with the non-sysfs code path, but for consistency I
updated that code as well.
I also did some testing of the bonding /proc file being open
while the bond is being deleted, and didn't see any problems there.
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net/bonding/bond_sysfs.c')
| -rw-r--r-- | drivers/net/bonding/bond_sysfs.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c index a122baa5c7b..60cccf2aa95 100644 --- a/drivers/net/bonding/bond_sysfs.c +++ b/drivers/net/bonding/bond_sysfs.c @@ -164,9 +164,9 @@ static ssize_t bonding_store_bonds(struct class *cls, const char *buffer, size_t printk(KERN_INFO DRV_NAME ": %s is being deleted...\n", bond->dev->name); - unregister_netdevice(bond->dev); bond_deinit(bond->dev); bond_destroy_sysfs_entry(bond); + unregister_netdevice(bond->dev); rtnl_unlock(); goto out; } |