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    Subject[PATCH 4.9 87/95] hypfs_kill_super(): deal with failed allocations
    Date
    4.9-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Al Viro <viro@zeniv.linux.org.uk>

    commit a24cd490739586a7d2da3549a1844e1d7c4f4fc4 upstream.

    hypfs_fill_super() might fail to allocate sbi; hypfs_kill_super()
    should not oops on that.

    Cc: stable@vger.kernel.org
    Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    arch/s390/hypfs/inode.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/arch/s390/hypfs/inode.c
    +++ b/arch/s390/hypfs/inode.c
    @@ -318,7 +318,7 @@ static void hypfs_kill_super(struct supe

    if (sb->s_root)
    hypfs_delete_tree(sb->s_root);
    - if (sb_info->update_file)
    + if (sb_info && sb_info->update_file)
    hypfs_remove(sb_info->update_file);
    kfree(sb->s_fs_info);
    sb->s_fs_info = NULL;

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