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From 4b59b40d6403cb74e883db837f963296e80f04f3 Mon Sep 17 00:00:00 2001
From: Yong Zhao <yong.zhao@amd.com>
Date: Fri, 8 Dec 2017 23:08:48 -0500
Subject: [PATCH 3417/4131] drm/amdkfd: Fix memory leaks in kfd topology
Kobject created using kobject_create_and_add() can be freed using
kobject_put() when there is no referenece any more. However,
kobject memory allocated with kzalloc() has to set up a release
callback in order to free it when the counter decreases to 0.
Otherwise it causes memory leak.
Signed-off-by: Yong Zhao <yong.zhao@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
---
drivers/gpu/drm/amd/amdkfd/kfd_topology.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
index b614746..9b9824f 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
@@ -501,11 +501,17 @@ static ssize_t sysprops_show(struct kobject *kobj, struct attribute *attr,
return ret;
}
+static void kfd_topology_kobj_release(struct kobject *kobj)
+{
+ kfree(kobj);
+}
+
static const struct sysfs_ops sysprops_ops = {
.show = sysprops_show,
};
static struct kobj_type sysprops_type = {
+ .release = kfd_topology_kobj_release,
.sysfs_ops = &sysprops_ops,
};
@@ -541,6 +547,7 @@ static const struct sysfs_ops iolink_ops = {
};
static struct kobj_type iolink_type = {
+ .release = kfd_topology_kobj_release,
.sysfs_ops = &iolink_ops,
};
@@ -568,6 +575,7 @@ static const struct sysfs_ops mem_ops = {
};
static struct kobj_type mem_type = {
+ .release = kfd_topology_kobj_release,
.sysfs_ops = &mem_ops,
};
@@ -607,6 +615,7 @@ static const struct sysfs_ops cache_ops = {
};
static struct kobj_type cache_type = {
+ .release = kfd_topology_kobj_release,
.sysfs_ops = &cache_ops,
};
@@ -729,6 +738,7 @@ static const struct sysfs_ops node_ops = {
};
static struct kobj_type node_type = {
+ .release = kfd_topology_kobj_release,
.sysfs_ops = &node_ops,
};
--
2.7.4
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