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[Bug 1201869] Re: poor networking throughput across an OpenStack Neutron router on 3.5/3.8 kernels

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Launchpad Bug Tracker <1201869@xxxxxxxxxxxxxxxxxx>
Date: Fri, 27 Sep 2013 09:20:50 -0000
Reply-to: Bug 1201869 <1201869@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
This bug was fixed in the package linux - 3.5.0-41.64

---------------
linux (3.5.0-41.64) quantal; urgency=low

  [Brad Figg]

  * Release Tracking Bug
    - LP: #1223451

  [ Upstream Kernel Changes ]

  * kernel-doc: bugfix - multi-line macros
    - LP: #1223920
  * Revert "zram: use zram->lock to protect zram_free_page() in swap free
    notify path"
    - LP: #1215513
  * x86 thermal: Delete power-limit-notification console messages
    - LP: #1215748
  * x86 thermal: Disable power limit notification interrupt by default
    - LP: #1215748
  * ARM: 7810/1: perf: Fix array out of bounds access in
    armpmu_map_hw_event()
    - LP: #1216442
    - CVE-2013-4254
  * ARM: 7809/1: perf: fix event validation for software group leaders
    - LP: #1216442
    - CVE-2013-4254
  * veth: reduce stat overhead
    - LP: #1201869
  * veth: extend device features
    - LP: #1201869
  * veth: avoid a NULL deref in veth_stats_one
    - LP: #1201869
  * veth: fix a NULL deref in netif_carrier_off
    - LP: #1201869
  * veth: fix NULL dereference in veth_dellink()
    - LP: #1201869
  * Bluetooth: Add support for Atheros [0cf3:3121]
    - LP: #1202477
  * efivars: explicitly calculate length of VariableName
    - LP: #1217745
  * xfs: fix _xfs_buf_find oops on blocks beyond the filesystem end
    - LP: #1151527
    - CVE-2013-1819
  * drm/i915/lvds: ditch ->prepare special case
    - LP: #1221791
  * serial: mxs: fix buffer overflow
    - LP: #1221791
  * fs/proc/task_mmu.c: fix buffer overflow in add_page_map()
    - LP: #1221791
  * af_key: initialize satype in key_notify_policy_flush()
    - LP: #1221791
  * vm: add no-mmu vm_iomap_memory() stub
    - LP: #1221791
  * iwl4965: set power mode early
    - LP: #1221791
  * iwl4965: reset firmware after rfkill off
    - LP: #1221791
  * ASoC: cs42l52: Reorder Min/Max and update to SX_TLV for Beep Volume
    - LP: #1221791
  * can: pcan_usb: fix wrong memcpy() bytes length
    - LP: #1221791
  * ALSA: 6fire: make buffers DMA-able (pcm)
    - LP: #1221791
  * ALSA: 6fire: make buffers DMA-able (midi)
    - LP: #1221791
  * jbd2: Fix use after free after error in jbd2_journal_dirty_metadata()
    - LP: #1221791
  * USB-Serial: Fix error handling of usb_wwan
    - LP: #1221791
  * USB: mos7840: fix big-endian probe
    - LP: #1221791
  * USB: adutux: fix big-endian device-type reporting
    - LP: #1221791
  * USB: ti_usb_3410_5052: fix big-endian firmware handling
    - LP: #1221791
  * m68k/atari: ARAnyM - Fix NatFeat module support
    - LP: #1221791
  * m68k: Truncate base in do_div()
    - LP: #1221791
  * usb: add two quirky touchscreen
    - LP: #1221791
  * USB: mos7720: fix broken control requests
    - LP: #1221791
  * USB: keyspan: fix null-deref at disconnect and release
    - LP: #1221791
  * MIPS: Expose missing pci_io{map,unmap} declarations
    - LP: #1221791
  * microblaze: Update microblaze defconfigs
    - LP: #1221791
  * sound: Fix make allmodconfig on MIPS
    - LP: #1221791
  * sound: Fix make allmodconfig on MIPS correctly
    - LP: #1221791
  * alpha: makefile: don't enforce small data model for kernel builds
    - LP: #1221791
  * MIPS: Rewrite pfn_valid to work in modules, too.
    - LP: #1221791
  * xtensa: fix linker script transformation for .text.unlikely
    - LP: #1221791
  * wusbcore: fix kernel panic when disconnecting a wireless USB->serial
    device
    - LP: #1221791
  * iwlwifi: dvm: fix calling ieee80211_chswitch_done() with NULL
    - LP: #1221791
  * iwlwifi: pcie: disable L1 Active after pci_enable_device
    - LP: #1221791
  * zd1201: do not use stack as URB transfer_buffer
    - LP: #1221791
  * Hostap: copying wrong data prism2_ioctl_giwaplist()
    - LP: #1221791
  * ARM: at91/DT: fix at91sam9n12ek memory node
    - LP: #1221791
  * drm/i915: Invalidate TLBs for the rings after a reset
    - LP: #1221791
  * libata: apply behavioral quirks to sil3826 PMP
    - LP: #1221791
  * ARM: davinci: nand: specify ecc strength
    - LP: #1221791
  * ARM: 7816/1: CONFIG_KUSER_HELPERS: fix help text
    - LP: #1221791
  * sata_fsl: save irqs while coalescing
    - LP: #1221791
  * xen/events: initialize local per-cpu mask for all possible events
    - LP: #1221791
  * of: fdt: fix memory initialization for expanded DT
    - LP: #1221791
  * zfcp: fix lock imbalance by reworking request queue locking
    - LP: #1221791
  * zfcp: fix schedule-inside-lock in scsi_device list loops
    - LP: #1221791
  * nilfs2: remove double bio_put() in nilfs_end_bio_write() for
    BIO_EOPNOTSUPP error
    - LP: #1221791
  * nilfs2: fix issue with counting number of bio requests for
    BIO_EOPNOTSUPP error detection
    - LP: #1221791
  * workqueue: fix possible stall on try_to_grab_pending() of a delayed
    work item
    - LP: #1221791
  * x86/xen: do not identity map UNUSABLE regions in the machine E820
    - LP: #1221791
  * jfs: fix readdir cookie incompatibility with NFSv4
    - LP: #1221791
  * powerpc: Don't Oops when accessing /proc/powerpc/lparcfg without
    hypervisor
    - LP: #1221791
  * powerpc: Work around gcc miscompilation of __pa() on 64-bit
    - LP: #1221791
  * powerpc/hvsi: Increase handshake timeout from 200ms to 400ms.
    - LP: #1221791
  * drivers/base/memory.c: fix show_mem_removable() to handle missing
    sections
    - LP: #1221791
  * x86 get_unmapped_area: Access mmap_legacy_base through mm_struct member
    - LP: #1221791
  * Linux 3.5.7.21
    - LP: #1221791
  * mfd: rtsx: Read vendor setting from config space
    - LP: #1201698
  * cifs: don't instantiate new dentries in readdir for inodes that need to
    be revalidated immediately
    - LP: #1222442

  [ Wen-chien Jesse Sung ]

  * SAUCE: Bluetooth: use hci_send_cmd instead of usb_control_msg
    - LP: #1065400
 -- Tim Gardner <tim.gardner@xxxxxxxxxxxxx>   Fri, 23 Aug 2013 08:49:52 -0600

** Changed in: linux (Ubuntu Quantal)
       Status: Fix Committed => Fix Released

** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2013-1819

** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2013-4254

** Changed in: linux (Ubuntu Raring)
       Status: Fix Committed => Fix Released

-- 
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https://bugs.launchpad.net/bugs/1201869

Title:
  poor networking throughput across an OpenStack Neutron router on
  3.5/3.8 kernels

Status in “linux” package in Ubuntu:
  Fix Released
Status in “linux” source package in Quantal:
  Fix Released
Status in “linux” source package in Raring:
  Fix Released

Bug description:
  SRU Justification:

  Impact:
  Users of the 3.5/3.8 kernel will have poor network throughput when using OpenStack Neutron depending on their setup.

  Fix:
  These upstream patches are necessary to fix the issue:

  2681128f0ced8aa4e66f221197e183cc16d244fe
  8093315a91340bca52549044975d8c7f673b28a1
  d0e2c55e7c940a3ee91e9e23a2683b593690f1e9
  2efd32ee1b60b0b31404ca47c1ce70e5a5d24ebc
  f45a5c267da35174e22cec955093a7513dc1623d

  Testcase:
  Setup OpenStack Neutron. Test throughput between internal and external nodes.

  The following explains an example vlan+namespace configuration:
  Internal Node: [10.x.x.2]->eth2.123->br123->tap123->qr-123[10.x.x.1] <--- netns: qrouter-123
  netns: qrouter-123 ---> qg-234[10.x.y.1]->tap234->br234->eth2.234->External Node[10.x.y.2]
  Where:
  1) tap123+qr-123 and tap234+qg-234 are veth pairs
  2) qr-123 and qg-234 reside inside the qrouter-123 namespace

  --

  OpenStack Neutron does IP forwarding through a network namespace. A
  veth pair is used to connect into the namespace. The veth pair appears
  to be the bottleneck, independent of network namespace. In newer
  versions of Linux (Ubuntu-3.9.0-7.15 / v3.9-rc1 and greater)
  throughput is much higher by almost 3 times. For example with some
  testing throughput is 3.5 Gbps in pre 3.9-rc1 versions and 9.1 Gbps
  with these patches applied.

  This has been confirmed on kernels from 3.5.x-3.8.x. (Quantal and
  Raring lts backports)

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References

[Bug 1201869] [NEW] poor networking throughput across an OpenStack Neutron router on 3.5/3.8 kernels
From: Chris J Arges, 2013-07-16