New: fcntl GET_OWN reports 0 for sockets instead of PID

http://bugzilla.kernel.org/show_bug.cgi?id=9132

           Summary: fcntl GET_OWN reports 0 for sockets instead of PID
           Product: Networking
           Version: 2.5
     KernelVersion: 2.6.22
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Other
        AssignedTo: [email protected]
        ReportedBy: [email protected]

Most recent kernel where this bug did not occur: 2.6.22
Distribution: Kubuntu
Hardware Environment: VMWare workstation 6
Software Environment:
Problem Description: calling fcntl with F_GETOWN on a socket gives allways zero instead of the PID of the socket. The fcntl code is right but the data is zero in the struct file element. It sounds like pid is not set when the socket is attached to the fd in sock_attach_fd() of net/socket.c.

I would add something like this:

file->f_owner.pid=find_get_pid(task->pid);
file->f_owner.pid_type=PIDTYPE_PID;

in sock_attach_fd() of net/socket.c

Steps to reproduce:

s=socket(...);
pid=fcntl(s, F_GETOWN);