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Subject[PATCH v2 3/3] btrfs: Use kfree() in btrfs_ioctl_get_subvol_info()
Date
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@suse.cz>
Signed-off-by: Waiman Long <longman@redhat.com>
---
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
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