kernel-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

Luke J Militello, this bug was reported a while ago and there hasn't
been any activity in it recently. We were wondering if this is still an
issue? If so, could you please test for this with the latest development
release of Ubuntu? ISO images are available from
http://cdimage.ubuntu.com/daily-live/current/ .

If it remains an issue, could you please run the following command in
the development release from a Terminal
(Applications->Accessories->Terminal), as it will automatically gather
and attach updated debug information to this report:

apport-collect -p linux <replace-with-bug-number>

Also, could you please test the latest upstream kernel available following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Please do not test the daily kernel folder, but the one all the way at the bottom. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-v3.12-rc2

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:
needs-upstream-testing

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

As well, please remove the tag:
needs-upstream-testing

Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results. Thank you for your
understanding.


** Changed in: linux (Ubuntu)
       Status: Triaged => Incomplete

-- 
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https://bugs.launchpad.net/bugs/569610

Title:
  "Kernel unaligned access at TPC" causing network/system to become slow
  and/or unresponsive

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Binary package hint: linux-image-2.6.24-27-sparc64-smp

  These few lines kept showing up in dmesg/logs over the past few weeks
  and then started to cause the system/network in question to become
  slow and unresponsive leading to a hard reboot to remedy.

  Apr  7 16:01:48 Hal kernel: [1076377.260268] Kernel unaligned access at TPC[6a1504] tcp_transmit_skb+0x1ac/0x8c0
  Apr  7 16:01:48 Hal kernel: [1076377.260330] Kernel unaligned access at TPC[6a150c] tcp_transmit_skb+0x1b4/0x8c0
  Apr  7 16:01:48 Hal kernel: [1076377.260355] Kernel unaligned access at TPC[68e724] ip_queue_xmit+0x14c/0x5a0
  Apr  7 16:01:48 Hal kernel: [1076377.260390] Kernel unaligned access at TPC[68e734] ip_queue_xmit+0x15c/0x5a0
  Apr  7 16:01:48 Hal kernel: [1076377.260418] Kernel unaligned access at TPC[58e904] ip_fast_csum+0xc/0x80
  Apr  7 16:32:21 Hal kernel: [1078210.103332] Kernel unaligned access at TPC[6a1504] tcp_transmit_skb+0x1ac/0x8c0
  Apr  7 16:32:21 Hal kernel: [1078210.103406] Kernel unaligned access at TPC[6a150c] tcp_transmit_skb+0x1b4/0x8c0
  Apr  7 16:32:21 Hal kernel: [1078210.103437] Kernel unaligned access at TPC[68e724] ip_queue_xmit+0x14c/0x5a0
  Apr  7 16:32:21 Hal kernel: [1078210.103474] Kernel unaligned access at TPC[68e734] ip_queue_xmit+0x15c/0x5a0
  Apr  7 16:32:21 Hal kernel: [1078210.103501] Kernel unaligned access at TPC[58e904] ip_fast_csum+0xc/0x80

  I'm not sure if this is kernel related or the fact that I am running
  ifenslave with interface bonding in fault-tolerant mode.

  My system is a Sun Enterprise 420R.
  I'm running Ubuntu 8.04.4 w/4GB of RAM.

  CPU Info...

  cpu		: TI UltraSparc II  (BlackBird)
  fpu		: UltraSparc II integrated FPU
  prom		: OBP 3.23.0 1999/06/30 13:53
  type		: sun4u
  ncpus probed	: 4
  ncpus active	: 4
  D$ parity tl1	: 0
  I$ parity tl1	: 0
  Cpu0ClkTck	: 000000001ad35932
  Cpu1ClkTck	: 000000001ad35932
  Cpu2ClkTck	: 000000001ad35932
  Cpu3ClkTck	: 000000001ad35932
  MMU Type	: Spitfire
  State:
  CPU0:		online
  CPU1:		online
  CPU2:		online
  CPU3:		online

  Network card info via dmesg...

  [  139.086540] PCI: Enabling device: (0000:02:00.0), cmd 2
  [  139.092436] eth1: Sun Cassini+ (64bit/33MHz PCI/Cu) Ethernet[15] 00:03:ba:85:5b:01
  [  139.266151] PCI: Enabling device: (0000:02:01.0), cmd 2
  [  139.272054] eth2: Sun Cassini+ (64bit/33MHz PCI/Cu) Ethernet[16] 00:03:ba:85:5b:02
  [  139.446977] PCI: Enabling device: (0000:03:02.0), cmd 2
  [  139.452954] eth3: Sun Cassini+ (64bit/33MHz PCI/Cu) Ethernet[17] 00:03:ba:85:5b:03
  [  139.627883] PCI: Enabling device: (0000:03:03.0), cmd 2
  [  139.633963] eth4: Sun Cassini+ (64bit/33MHz PCI/Cu) Ethernet[18] 00:03:ba:85:5b:04
  [  139.807491] PCI: Enabling device: (0000:05:00.0), cmd 2
  [  139.813690] eth5: Sun Cassini+ (64bit/33MHz PCI/Cu) Ethernet[19] 00:03:ba:85:20:e5
  [  139.990262] PCI: Enabling device: (0000:05:01.0), cmd 2
  [  139.996483] eth6: Sun Cassini+ (64bit/33MHz PCI/Cu) Ethernet[20] 00:03:ba:85:20:e6
  [  140.170039] PCI: Enabling device: (0000:06:02.0), cmd 2
  [  140.176496] eth7: Sun Cassini+ (64bit/33MHz PCI/Cu) Ethernet[21] 00:03:ba:85:20:e7
  [  140.350911] PCI: Enabling device: (0000:06:03.0), cmd 2
  [  140.357394] eth8: Sun Cassini+ (64bit/33MHz PCI/Cu) Ethernet[22] 00:03:ba:85:20:e8

  Bonding info via dmesg...

  [  143.262268] Ethernet Channel Bonding Driver: v3.2.3 (December 6, 2007)
  [  143.339438] bonding: MII link monitoring set to 100 ms

  Bonding options set in '/etc/network/interfaces'...

  post-up ifenslave bond0 eth1 eth5
  pre-down ifenslave -d bond0 eth1 eth5

  Bonding options loaded via '/etc/modules'...

  bonding mode=active-backup miimon=100 max_bonds=4

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