[Qemu-devel] [Bug 1687214] [NEW] Rapid tremendous memory hog when using -net nic, vlan=0 -net user, vlan=0

[Alamot]

Public bug reported:

A rapid tremendous memory hog is occuring when I use -net nic,vlan=0
-net user,vlan=0. Tested with QEMU 2.8.0 & 2.9.0 in Gentoo. All
available memory (8GB) + swap (over 20GB) is exhausted very rapidly.

This bug is possibly related to 
https://bugs.launchpad.net/qemu/+bug/1310714 
and maybe to
https://bugs.launchpad.net/qemu/+bug/1288620

The bug IS present wheh I use -net nic,vlan=0 -net user,vlan=0 (tested
with no model and model=e1000 and model=virtio, with all these the bug
is present)

The bug is NOT present with I use this:
-netdev type=user,id=mynet0 -device virtio-net-pci,netdev=mynet0

I tested this bug only using windows guests (Windows XP & Windows 8).

** Affects: qemu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1687214

Title:
  Rapid tremendous memory hog when using -net nic,vlan=0 -net
  user,vlan=0

Status in QEMU:
  New

Bug description:
  A rapid tremendous memory hog is occuring when I use -net nic,vlan=0
  -net user,vlan=0. Tested with QEMU 2.8.0 & 2.9.0 in Gentoo. All
  available memory (8GB) + swap (over 20GB) is exhausted very rapidly.

  This bug is possibly related to 
  https://bugs.launchpad.net/qemu/+bug/1310714 
  and maybe to
  https://bugs.launchpad.net/qemu/+bug/1288620

  The bug IS present wheh I use -net nic,vlan=0 -net user,vlan=0 (tested
  with no model and model=e1000 and model=virtio, with all these the bug
  is present)

  The bug is NOT present with I use this:
  -netdev type=user,id=mynet0 -device virtio-net-pci,netdev=mynet0

  I tested this bug only using windows guests (Windows XP & Windows 8).

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