Re: [PATCH AUTOSEL 5.7 11/53] btrfs: use kfree() in btrfs_ioctl_get_subvol_info()

On Thu, Jul 02, 2020 at 10:25:58AM +0200, David Sterba wrote:

On Wed, Jul 01, 2020 at 09:21:20PM -0400, Sasha Levin wrote:

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From: Waiman Long longman@redhat.com

[ Upstream commit b091f7fede97cc64f7aaad3eeb37965aebee3082 ]

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 kzfree() isn't really needed, use kfree() instead.

I don't think this patch is necessary for any stable tree, it's meant only to ease merging a tree-wide patchset to rename kzfree. In btrfs code there was no point using it so it's plain kfree.

I've dropped it, thanks!