[Qemu-devel] [Bug 1490886] [NEW] spice-qemu-char.c Assert

[Quwj]

Public bug reported:

spice-qemu-char.c:173: spice_chr_add_watch: Assertion `cond == G_IO_OUT' failed.
I trace the code virtio-console.c:
ret = qemu_chr_fe_write(vcon->chr, buf, len);
    trace_virtio_console_flush_buf(port->id, len, ret);

    if (ret < len) {
        VirtIOSerialPortClass *k = VIRTIO_SERIAL_PORT_GET_CLASS(port);

        /*
         * Ideally we'd get a better error code than just -1, but
         * that's what the chardev interface gives us right now.  If
         * we had a finer-grained message, like -EPIPE, we could close
         * this connection.
         */
        if (ret < 0)
            ret = 0;
        if (!k->is_console) {
            virtio_serial_throttle_port(port, true);
            if (!vcon->watch) {
                vcon->watch = qemu_chr_fe_add_watch(vcon->chr,
                                                    G_IO_OUT|G_IO_HUP,
                                                    chr_write_unblocked, vcon);
            }
        }
    }
and spice-qemu-char.c in function:spice_chr_add_watch
assert(cond == G_IO_OUT);
so run in this code,will trigger this assert.

My qemu version is 2.3.0 and spice-server version is 0.12.5

** Affects: qemu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1490886

Title:
  spice-qemu-char.c Assert

Status in QEMU:
  New

Bug description:
  spice-qemu-char.c:173: spice_chr_add_watch: Assertion `cond == G_IO_OUT' 
failed.
  I trace the code virtio-console.c:
  ret = qemu_chr_fe_write(vcon->chr, buf, len);
      trace_virtio_console_flush_buf(port->id, len, ret);

      if (ret < len) {
          VirtIOSerialPortClass *k = VIRTIO_SERIAL_PORT_GET_CLASS(port);

          /*
           * Ideally we'd get a better error code than just -1, but
           * that's what the chardev interface gives us right now.  If
           * we had a finer-grained message, like -EPIPE, we could close
           * this connection.
           */
          if (ret < 0)
              ret = 0;
          if (!k->is_console) {
              virtio_serial_throttle_port(port, true);
              if (!vcon->watch) {
                  vcon->watch = qemu_chr_fe_add_watch(vcon->chr,
                                                      G_IO_OUT|G_IO_HUP,
                                                      chr_write_unblocked, 
vcon);
              }
          }
      }
  and spice-qemu-char.c in function:spice_chr_add_watch
  assert(cond == G_IO_OUT);
  so run in this code,will trigger this assert.

  My qemu version is 2.3.0 and spice-server version is 0.12.5

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