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binder: free memory on error

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On binder_init() the devices string is duplicated and smashed into individual
device names which are passed along. However, the original duplicated string
wasn't freed in case binder_init() failed. Let's free it on error.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Christian Brauner 2017-08-21 16:13:28 +02:00 committed by Greg Kroah-Hartman
parent 9e18d0c82f
commit 22eb9476b5
1 changed files with 6 additions and 2 deletions
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8
drivers/android/binder.c
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@ -5237,7 +5237,7 @@ static int __init init_binder_device(const char *name)
static int __init binder_init(void)
{
int ret;
char *device_name, *device_names;
char *device_name, *device_names, *device_tmp;
struct binder_device *device;
struct hlist_node *tmp;
@ -5288,7 +5288,8 @@ static int __init binder_init(void)
}
strcpy(device_names, binder_devices_param);
while ((device_name = strsep(&device_names, ","))) {
device_tmp = device_names;
while ((device_name = strsep(&device_tmp, ","))) {
ret = init_binder_device(device_name);
if (ret)
goto err_init_binder_device_failed;
@ -5302,6 +5303,9 @@ static int __init binder_init(void)
hlist_del(&device->hlist);
kfree(device);
}
kfree(device_names);
err_alloc_device_names_failed:
debugfs_remove_recursive(binder_debugfs_dir_entry_root);