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    SubjectRe: [PATCH AUTOSEL 5.7 11/53] btrfs: use kfree() in btrfs_ioctl_get_subvol_info()
    On Wed, Jul 01, 2020 at 09:21:20PM -0400, Sasha Levin wrote:
    > 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.

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