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[4.9,082/212] EDAC: Fix reference count leaks

Message ID 20200820091606.504127526@linuxfoundation.org
State Superseded
Headers show
Series None | expand

Commit Message

Greg KH Aug. 20, 2020, 9:20 a.m. UTC 
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 mbox series

Patch

diff --git a/drivers/edac/edac_device_sysfs.c b/drivers/edac/edac_device_sysfs.c
index 93da1a45c7161..470b02fc2de96 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 6e3428ba400f3..622d117e25335 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);