From cad6d02acc13b6360e4525f86adb6a8932501e15 Mon Sep 17 00:00:00 2001 From: Haggai Eran Date: Sun, 18 May 2014 11:12:25 +0300 Subject: [PATCH] IB/core: Fix port kobject deletion during error flow When encountering an error during the add_port function, adding a port to sysfs, the port kobject is freed without being deleted from sysfs. Instead of freeing it directly, the patch uses kobject_put to release the kobject and delete it. Signed-off-by: Haggai Eran Signed-off-by: Roland Dreier --- drivers/infiniband/core/sysfs.c | 26 +++++++++++++++++--------- 1 file changed, 17 insertions(+), 9 deletions(-) diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c index 1f77072fa1fe..68fa798c007d 100644 --- a/drivers/infiniband/core/sysfs.c +++ b/drivers/infiniband/core/sysfs.c @@ -429,15 +429,19 @@ static void ib_port_release(struct kobject *kobj) struct attribute *a; int i; - for (i = 0; (a = p->gid_group.attrs[i]); ++i) - kfree(a); + if (p->gid_group.attrs) { + for (i = 0; (a = p->gid_group.attrs[i]); ++i) + kfree(a); - kfree(p->gid_group.attrs); + kfree(p->gid_group.attrs); + } - for (i = 0; (a = p->pkey_group.attrs[i]); ++i) - kfree(a); + if (p->pkey_group.attrs) { + for (i = 0; (a = p->pkey_group.attrs[i]); ++i) + kfree(a); - kfree(p->pkey_group.attrs); + kfree(p->pkey_group.attrs); + } kfree(p); } @@ -536,8 +540,10 @@ static int add_port(struct ib_device *device, int port_num, ret = kobject_init_and_add(&p->kobj, &port_type, device->ports_parent, "%d", port_num); - if (ret) - goto err_put; + if (ret) { + kfree(p); + return ret; + } ret = sysfs_create_group(&p->kobj, &pma_group); if (ret) @@ -585,6 +591,7 @@ err_free_pkey: kfree(p->pkey_group.attrs[i]); kfree(p->pkey_group.attrs); + p->pkey_group.attrs = NULL; err_remove_gid: sysfs_remove_group(&p->kobj, &p->gid_group); @@ -594,12 +601,13 @@ err_free_gid: kfree(p->gid_group.attrs[i]); kfree(p->gid_group.attrs); + p->gid_group.attrs = NULL; err_remove_pma: sysfs_remove_group(&p->kobj, &pma_group); err_put: - kfree(p); + kobject_put(&p->kobj); return ret; } -- 2.39.5