Bug 409209 – kernel 3.0 and 3.2 bug: "e1000e 0000:11:00.0: eth9: Detected Hardware Unit Hang:"

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Joakim Tjernlund 2012-03-21 17:36:45 UTC]

kernels  3.2.x and 3.0.x prints this:
 e1000e 0000:11:00.0: eth9: Detected Hardware Unit Hang:
  TDH                  <a4>
  TDT                  <a7>
  next_to_use          <a7>
  next_to_clean        <a4>
buffer_info[next_to_clean]:
  time_stamp           <1008e849f>
  next_to_watch        <a4>
  jiffies              <1008e85d8>
  next_to_watch.status <0>
MAC Status             <80387>
PHY Status             <792d>
PHY 1000BASE-T Status  <3800>
PHY Extended Status    <3000>
PCI Status             <10>

every now and then when the load is high.

This is a kernel bug which is fixed in 3.3:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=09357b00255c233705b1cf6d76a8d147340545b8

see also bug report
https://bugzilla.redhat.com/show_bug.cgi?id=785806

[Comment 1 Joakim Tjernlund 2012-03-22 07:54:44 UTC]

Just heard back from the author of the patch and the problem
goes back all the way to 2.6.32.

[Comment 2 Mike Pagano 2012-04-06 13:10:14 UTC]

This is in Linux patch 3.2.14 [1]
Which is in genpatches 3.2-13 [2]
Which is in gentoo-sources-3.2-r13[3]
(or vanilla-sources-3.2.14)


[1]http://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=commitdiff;h=09357b00255c233705b1cf6d76a8d147340545b8
[2]
http://sources.gentoo.org/cgi-bin/viewvc.cgi/linux-patches/genpatches-2.6/tags/3.2-13/
[3]
http://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/sys-kernel/gentoo-sources/gentoo-sources-3.2.14.ebuild?revision=1.1&view=markup