diff options
| author | Kaike Wan <kaike.wan@intel.com> | 2020-03-26 12:38:14 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-04-13 10:31:33 +0200 |
| commit | 2c735183134dde3c483bbab9e22e34f1e03ba696 (patch) | |
| tree | 5d1d22a3dd1c69f5bb6325984f4d8d36a2985159 /drivers | |
| parent | c4e0295d3bf2650312167a302b39e1f0442bf3e5 (diff) | |
IB/hfi1: Call kobject_put() when kobject_init_and_add() fails
commit dfb5394f804ed4fcea1fc925be275a38d66712ab upstream.
When kobject_init_and_add() returns an error in the function
hfi1_create_port_files(), the function kobject_put() is not called for the
corresponding kobject, which potentially leads to memory leak.
This patch fixes the issue by calling kobject_put() even if
kobject_init_and_add() fails.
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200326163813.21129.44280.stgit@awfm-01.aw.intel.com
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/staging/rdma/hfi1/sysfs.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/staging/rdma/hfi1/sysfs.c b/drivers/staging/rdma/hfi1/sysfs.c index 1dd6727dd5ef..a86828f44c4d 100644 --- a/drivers/staging/rdma/hfi1/sysfs.c +++ b/drivers/staging/rdma/hfi1/sysfs.c @@ -620,7 +620,11 @@ int hfi1_create_port_files(struct ib_device *ibdev, u8 port_num, dd_dev_err(dd, "Skipping sc2vl sysfs info, (err %d) port %u\n", ret, port_num); - goto bail; + /* + * Based on the documentation for kobject_init_and_add(), the + * caller should call kobject_put even if this call fails. + */ + goto bail_sc2vl; } kobject_uevent(&ppd->sc2vl_kobj, KOBJ_ADD); @@ -630,7 +634,7 @@ int hfi1_create_port_files(struct ib_device *ibdev, u8 port_num, dd_dev_err(dd, "Skipping sl2sc sysfs info, (err %d) port %u\n", ret, port_num); - goto bail_sc2vl; + goto bail_sl2sc; } kobject_uevent(&ppd->sl2sc_kobj, KOBJ_ADD); @@ -640,7 +644,7 @@ int hfi1_create_port_files(struct ib_device *ibdev, u8 port_num, dd_dev_err(dd, "Skipping vl2mtu sysfs info, (err %d) port %u\n", ret, port_num); - goto bail_sl2sc; + goto bail_vl2mtu; } kobject_uevent(&ppd->vl2mtu_kobj, KOBJ_ADD); @@ -651,7 +655,7 @@ int hfi1_create_port_files(struct ib_device *ibdev, u8 port_num, dd_dev_err(dd, "Skipping Congestion Control sysfs info, (err %d) port %u\n", ret, port_num); - goto bail_vl2mtu; + goto bail_cc; } kobject_uevent(&ppd->pport_cc_kobj, KOBJ_ADD); @@ -691,7 +695,6 @@ bail_sl2sc: kobject_put(&ppd->sl2sc_kobj); bail_sc2vl: kobject_put(&ppd->sc2vl_kobj); -bail: return ret; } |