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[Xen-users] 4gb seg fixup errors in Debian (usual hints don't seem to work)

  • To: <xen-users@xxxxxxxxxxxxxxxxxxx>
  • From: Fermín Galán Márquez <fermin.galan@xxxxxxx>
  • Date: Tue, 17 Apr 2007 13:34:20 +0200
  • Delivery-date: Tue, 17 Apr 2007 04:32:50 -0700
  • List-id: Xen user discussion <xen-users.lists.xensource.com>
  • Thread-index: AceA5FbULFAftCoiSPq0leN/z0z4fQ==


I'm getting a lot of "4gb seg fixup error" messages in the console of my
domU, that I would like to avoid (not only due to "aesthetic", it impacts
the performance, as explained at
d96f2b30ae). E.g.:

4gb seg fixup, process syslogd (pid 1107), cs:ip 73:b7efc5f0
4gb seg fixup, process syslogd (pid 1107), cs:ip 73:b7efc570
4gb seg fixup, process klogd (pid 1113), cs:ip 73:b7e2e5f0
4gb seg fixup, process klogd (pid 1113), cs:ip 73:b7eafd10
printk: 38 messages suppressed.
4gb seg fixup, process named (pid 1128), cs:ip 73:b7bc5c1c

I've read some hints to solve the problem:

- The "echo 'hwcap 0 nosegneg' > /etc/ld.so.conf.d/libc6-xen.conf" procedure

- The xen-divert-tls-libc script

- The "mv /lib/tls /lib/tls.disable" procedure

Unfortunately, I've tested all of them but no one solves the problem :(

I would like to know about any other possible solution or any further
info/pointer that could help me to debug and solve the problem, please.

My distribution is Debian testing. A list of relevant Xen-related packages
follows (it you need to know any other information regarding my system,
don't hesitate to ask it).

host:~# dpkg -l | grep xen | cut -c 1-56 | grep ii
ii  libc6-xen                       2.3.6.ds1-13
ii  linux-image-2.6-xen-686         2.6.18+6
ii  linux-image-2.6.18-4-xen-686    2.6.18.dfsg.1-11
ii  linux-image-xen-686             2.6.18+6
ii  linux-modules-2.6.18-4-xen-686  2.6.18.dfsg.1-11
ii  xen-hypervisor-3.0.3-1-i386-pae 3.0.3-0-2
ii  xen-tools                       2.8-2
ii  xen-utils-3.0.3-1               3.0.3-0-2
ii  xen-utils-common                3.0.3-0-2

Thanks in advance!

Best regards,

Fermín Galán Márquez
CTTC - Centre Tecnològic de Telecomunicacions de Catalunya
Parc Mediterrani de la Tecnologia, Av. del Canal Olímpic s/n, 08860
Castelldefels, Spain
Room 1.02
Tel : +34 93 645 29 12
Fax : +34 93 645 29 01
Email address: fermin dot galan at cttc dot es 

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