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bonding: Fix reference count leak in bond_sysfs_slave_add. 

commit a068aab42258e25094bc2c159948d263ed7d7a77 upstream.

kobject_init_and_add() takes reference even when it fails.
If this function returns an error, kobject_put() must be called to
properly clean up the memory associated with the object. Previous
commit "b8eb718348b8" fixed a similar problem.

Fixes: 07699f9a7c ("bonding: add sysfs /slave dir for bond slave devices.")
Signed-off-by: Qiushi Wu <wu000273@umn.edu>
Acked-by: Jay Vosburgh <jay.vosburgh@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Qiushi Wu 2020-05-27 22:10:29 -05:00 committed by Greg Kroah-Hartman
parent b668b392cc
commit a4547f63e0
1 changed files with 3 additions and 1 deletions
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4
drivers/net/bonding/bond_sysfs_slave.c
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@ -149,8 +149,10 @@ int bond_sysfs_slave_add(struct slave *slave)
err = kobject_init_and_add(&slave->kobj, &slave_ktype,
&(slave->dev->dev.kobj), "bonding_slave");
if (err)
if (err) {
kobject_put(&slave->kobj);
return err;
}
for (a = slave_attrs; *a; ++a) {
err = sysfs_create_file(&slave->kobj, &((*a)->attr));