In btrfs_ioctl_get_subvol_info(), there is a classic case where kzalloc() was incorrectly paired with kzfree(). According to David Sterba, there isn't any sensitive information in the subvol_info that needs to be cleared before freeing. So kfree_sensitive() isn't really needed, use kfree() instead. Reported-by: David Sterba <dsterba@xxxxxxx> Signed-off-by: Waiman Long <longman@xxxxxxxxxx> --- fs/btrfs/ioctl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index eab3f8510426..5070bd2436b7 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -2691,7 +2691,7 @@ static int btrfs_ioctl_get_subvol_info(struct file *file, void __user *argp) btrfs_put_root(root); out_free: btrfs_free_path(path); - kfree_sensitive(subvol_info); + kfree(subvol_info); return ret; } -- 2.18.1
