[PATCH] RDMA/qib: Fix several reference count leak qib_create_port_files

From: wu000273
Date: Wed May 27 2020 - 22:40:48 EST


From: Qiushi Wu <wu000273@xxxxxxx>

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. To fix these
issues, we correct the jump targets when the calls of
kobject_init_and_add() fail, to make sure they can be handled by
kobject_put(). Previous commit "b8eb718348b8" fixed a similar problem.

Signed-off-by: Qiushi Wu <wu000273@xxxxxxx>
---
drivers/infiniband/hw/qib/qib_sysfs.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/infiniband/hw/qib/qib_sysfs.c b/drivers/infiniband/hw/qib/qib_sysfs.c
index 568b21eb6ea1..017ed82070f9 100644
--- a/drivers/infiniband/hw/qib/qib_sysfs.c
+++ b/drivers/infiniband/hw/qib/qib_sysfs.c
@@ -760,7 +760,7 @@ int qib_create_port_files(struct ib_device *ibdev, u8 port_num,
qib_dev_err(dd,
"Skipping linkcontrol sysfs info, (err %d) port %u\n",
ret, port_num);
- goto bail;
+ goto bail_link;
}
kobject_uevent(&ppd->pport_kobj, KOBJ_ADD);

@@ -770,7 +770,7 @@ int qib_create_port_files(struct ib_device *ibdev, u8 port_num,
qib_dev_err(dd,
"Skipping sl2vl sysfs info, (err %d) port %u\n",
ret, port_num);
- goto bail_link;
+ goto bail_sl;
}
kobject_uevent(&ppd->sl2vl_kobj, KOBJ_ADD);

@@ -780,7 +780,7 @@ int qib_create_port_files(struct ib_device *ibdev, u8 port_num,
qib_dev_err(dd,
"Skipping diag_counters sysfs info, (err %d) port %u\n",
ret, port_num);
- goto bail_sl;
+ goto bail_diagc;
}
kobject_uevent(&ppd->diagc_kobj, KOBJ_ADD);

@@ -793,7 +793,7 @@ int qib_create_port_files(struct ib_device *ibdev, u8 port_num,
qib_dev_err(dd,
"Skipping Congestion Control sysfs info, (err %d) port %u\n",
ret, port_num);
- goto bail_diagc;
+ goto bail_cc;
}

kobject_uevent(&ppd->pport_cc_kobj, KOBJ_ADD);
--
2.17.1