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Subject[PATCH] RDMA/core: Fix several reference count leaks.
Date
From: Qiushi Wu <wu000273@umn.edu>

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.

Signed-off-by: Qiushi Wu <wu000273@umn.edu>
---
drivers/infiniband/core/sysfs.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c
index 087682e6969e..defe9cd4c5ee 100644
--- a/drivers/infiniband/core/sysfs.c
+++ b/drivers/infiniband/core/sysfs.c
@@ -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;
--
2.17.1
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