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RDMA/core: Fix several reference count leaks. 

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 b8eb718348 ("net-sysfs: Fix reference count leak in
rx|netdev_queue_add_kobject") fixed a similar problem.

Link: https://lore.kernel.org/r/20200528030231.9082-1-wu000273@umn.edu
Signed-off-by: Qiushi Wu <wu000273@umn.edu>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Qiushi Wu 2020-05-27 22:02:30 -05:00 committed by Jason Gunthorpe
parent bcafcdfdae
commit 0b8e125e21
1 changed files with 5 additions and 5 deletions
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10
drivers/infiniband/core/sysfs.c
View File

@ -1058,8 +1058,7 @@ static int add_port(struct ib_core_device *coredev, int port_num)
coredev->ports_kobj,
"%d", port_num);
if (ret) {
kfree(p);
return ret;
goto err_put;
}
p->gid_attr_group = kzalloc(sizeof(*p->gid_attr_group), GFP_KERNEL);
@ -1072,8 +1071,7 @@ static int add_port(struct ib_core_device *coredev, int port_num)
ret = kobject_init_and_add(&p->gid_attr_group->kobj, &gid_attr_type,
&p->kobj, "gid_attrs");
if (ret) {
kfree(p->gid_attr_group);
goto err_put;
goto err_put_gid_attrs;
}
if (device->ops.process_mad && is_full_dev) {
@ -1404,8 +1402,10 @@ int ib_port_register_module_stat(struct ib_device *device, u8 port_num,
ret = kobject_init_and_add(kobj, ktype, &port->kobj, "%s",
name);
if (ret)
if (ret) {
kobject_put(kobj);
return ret;
}
}
return 0;