From: Qiushi Wu wu000273@umn.edu
[ Upstream commit 17ed808ad243192fb923e4e653c1338d3ba06207 ]
When kobject_init_and_add() returns an error, it should be handled because kobject_init_and_add() takes a 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.
Therefore, replace calling kfree() and call kobject_put() and add a missing kobject_put() in the edac_device_register_sysfs_main_kobj() error path.
[ bp: Massage and merge into a single patch. ]
Fixes: b2ed215a3338 ("Kobject: change drivers/edac to use kobject_init_and_add") Signed-off-by: Qiushi Wu wu000273@umn.edu Signed-off-by: Borislav Petkov bp@suse.de Link: https://lkml.kernel.org/r/20200528202238.18078-1-wu000273@umn.edu Link: https://lkml.kernel.org/r/20200528203526.20908-1-wu000273@umn.edu Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/edac/edac_device_sysfs.c | 1 + drivers/edac/edac_pci_sysfs.c | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/edac/edac_device_sysfs.c b/drivers/edac/edac_device_sysfs.c index 0e7ea3591b781..5e75937537997 100644 --- a/drivers/edac/edac_device_sysfs.c +++ b/drivers/edac/edac_device_sysfs.c @@ -275,6 +275,7 @@ int edac_device_register_sysfs_main_kobj(struct edac_device_ctl_info *edac_dev)
/* Error exit stack */ err_kobj_reg: + kobject_put(&edac_dev->kobj); module_put(edac_dev->owner);
err_out: diff --git a/drivers/edac/edac_pci_sysfs.c b/drivers/edac/edac_pci_sysfs.c index 72c9eb9fdffbe..53042af7262e2 100644 --- a/drivers/edac/edac_pci_sysfs.c +++ b/drivers/edac/edac_pci_sysfs.c @@ -386,7 +386,7 @@ static int edac_pci_main_kobj_setup(void)
/* Error unwind statck */ kobject_init_and_add_fail: - kfree(edac_pci_top_main_kobj); + kobject_put(edac_pci_top_main_kobj);
kzalloc_fail: module_put(THIS_MODULE);