4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Al Viro <viro@xxxxxxxxxxxxxxxxxx> commit a24cd490739586a7d2da3549a1844e1d7c4f4fc4 upstream. hypfs_fill_super() might fail to allocate sbi; hypfs_kill_super() should not oops on that. Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 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;