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    Subject[PATCH 4.14 075/125] btrfs: use kvzalloc() to allocate clone_roots in btrfs_ioctl_send()
    Date
    From: Denis Efremov <efremov@linux.com>

    commit 8eb2fd00153a3a96a19c62ac9c6d48c2efebe5e8 upstream.

    btrfs_ioctl_send() used open-coded kvzalloc implementation earlier.
    The code was accidentally replaced with kzalloc() call [1]. Restore
    the original code by using kvzalloc() to allocate sctx->clone_roots.

    [1] https://patchwork.kernel.org/patch/9757891/#20529627

    Fixes: 818e010bf9d0 ("btrfs: replace opencoded kvzalloc with the helper")
    CC: stable@vger.kernel.org # 4.14+
    Signed-off-by: Denis Efremov <efremov@linux.com>
    Reviewed-by: David Sterba <dsterba@suse.com>
    Signed-off-by: David Sterba <dsterba@suse.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    fs/btrfs/send.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/fs/btrfs/send.c
    +++ b/fs/btrfs/send.c
    @@ -6701,7 +6701,7 @@ long btrfs_ioctl_send(struct file *mnt_f

    alloc_size = sizeof(struct clone_root) * (arg->clone_sources_count + 1);

    - sctx->clone_roots = kzalloc(alloc_size, GFP_KERNEL);
    + sctx->clone_roots = kvzalloc(alloc_size, GFP_KERNEL);
    if (!sctx->clone_roots) {
    ret = -ENOMEM;
    goto out;

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