Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.6 172/177] bonding: Fix reference count leak in bond_sysfs_slave_add. | Date | Mon, 1 Jun 2020 19:55:10 +0200 |
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From: Qiushi Wu <wu000273@umn.edu>
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: 07699f9a7c8d ("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>
--- drivers/net/bonding/bond_sysfs_slave.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/net/bonding/bond_sysfs_slave.c +++ b/drivers/net/bonding/bond_sysfs_slave.c @@ -149,8 +149,10 @@ int bond_sysfs_slave_add(struct slave *s 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));
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