This problem is still present in lucid when using imagemagick (and I
presume other packages), even though it does not appear when booting.
To reproduce
- launch "ami-a403f7cd" (latest lucid 32bit). dmesg output is clean
- install the 'imagemagick' package
- run 'convert' without any argument. The
** Also affects: pantheon
Importance: Undecided
Status: New
--
Karmic i386 EC2 kernel emulating unsupported memory accesses
https://bugs.launchpad.net/bugs/427288
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Shlomo,
Please see comment 21 above. You'll see the warning, but it will only affect
dbus programs.
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Karmic i386 EC2 kernel emulating unsupported memory accesses
https://bugs.launchpad.net/bugs/427288
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I'm running the Canonical base Karmic 32-bit AMI-1515f67c in EC2.
I get this in /var/log/syslog from boot:
Dec 27 12:57:29 ubuntu kernel: [7.011383]
***
Dec 27 12:57:29 ubuntu kernel: [7.011388]
** Changed in: vm-builder (Ubuntu Karmic)
Status: Fix Committed => Fix Released
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Karmic i386 EC2 kernel emulating unsupported memory accesses
https://bugs.launchpad.net/bugs/427288
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** Branch linked: lp:~ubuntu-core-dev/ubuntu-seeds/ubuntu.karmic
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Karmic i386 EC2 kernel emulating unsupported memory accesses
https://bugs.launchpad.net/bugs/427288
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** Changed in: vmbuilder
Status: Fix Committed => Fix Released
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Karmic i386 EC2 kernel emulating unsupported memory accesses
https://bugs.launchpad.net/bugs/427288
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This is fixed in 0.11.1-0ubuntu1.
** Changed in: vm-builder (Ubuntu Karmic)
Status: Fix Released => Fix Committed
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Karmic i386 EC2 kernel emulating unsupported memory accesses
https://bugs.launchpad.net/bugs/427288
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Bu
dbus has been fixed; the only required vmbuilder change was made long
ago, so closing this out.
** Changed in: vm-builder (Ubuntu Karmic)
Status: Fix Committed => Fix Released
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Karmic i386 EC2 kernel emulating unsupported memory accesses
https://bugs.launchpad.net/bugs/427288
You receiv
For the hopefully final record, the images do indeed still show a
warning like above, but it is only for bug dbus programs (bug 432718).
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Karmic i386 EC2 kernel emulating unsupported memory accesses
https://bugs.launchpad.net/bugs/427288
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** Changed in: vmbuilder
Status: Invalid => Fix Committed
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Karmic i386 EC2 kernel emulating unsupported memory accesses
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** Changed in: vmbuilder
Status: New => Invalid
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ub
flipping this back to fix-committed. I'll mark fix-released when we get
a build output with libc6-xen in it.
** Changed in: vm-builder (Ubuntu Karmic)
Status: Fix Released => Fix Committed
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Karmic i386 EC2 kernel emulating unsupported memory accesses
https://bugs.launchpad.net/bugs/427
Never mind. I manually merged them.
And pushed them to nectarine.
"them" is in reference to [1] and [2], which fixes bug 420581 and this
one (bug 427288) respectively. The next nightly builds at [3] should
have libc6-xen in them.
[1] http://bazaar.launchpad.net/~ubuntu-virt/vmbuilder/trunk/rev
Because of the state of the archive, I can't test it right now, but the
patch we need to vmbuilder is
--- VMBuilder/plugins/ubuntu/karmic.py.orig 2009-09-15 16:09:51.0
-0400
+++ VMBuilder/plugins/ubuntu/karmic.py 2009-09-15 16:09:57.0 -0400
@@ -27,9 +27,10 @@ class Karmic(Jau
I tested this on ami-a40fefcd (alpha5.1)
I verified that before install of libc6-xen, ldd reports bash to be
using /lib/tls/i686/cmov/libc.so.6 . after install, it shows
/lib/tls/i686/nosegneg/libdl.so.2.
However, after a reboot, I still see the message. I suspect this is
coming from initrd, or
This bug was fixed in the package eglibc - 2.10.1-0ubuntu12
---
eglibc (2.10.1-0ubuntu12) karmic; urgency=low
[ Steve Langasek ]
* Restore missing depends/conflicts/replaces handling for findutils and
belocs-locales-bin, lost in the latest merge.
* Move ldconfig trigger hand
** Branch linked: lp:~ubuntu-toolchain/glibc/eglibc-2.10-pkg
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** Changed in: eglibc (Ubuntu Karmic)
Status: In Progress => Fix Committed
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I've just tested on ami-a40fefcd , which uses the kernel in question
that installing libc6-xen fixes this problem in ec2.
I booted the instance, then 'apt-get update && apt-get install
libc6-xen'. After a reboot, I have:
$ uname -r
2.6.31-300-ec2
$ dpkg -l "libc6*" | grep ^ii
ii libc6 2.1
** Also affects: vmbuilder
Importance: Undecided
Status: New
** Also affects: vm-builder (Ubuntu)
Importance: Undecided
Status: New
** Changed in: vm-builder (Ubuntu Karmic)
Importance: Undecided => High
** Changed in: vm-builder (Ubuntu Karmic)
Assignee: (unassigned)
The eglibc side of this bug is fixed (or should be - the package just
finished building on the buildds and looks correct, now it's a matter of
testing that it all works together). To fix it in the EC2 images, the
build will need to be updated to pull in both libc6-i686 and libc6-xen
by default; I
https://bugs.launchpad.net/ubuntu/jaunty/+source/glibc/+bug/246625 talks
about the kernel version where it changed from "hwcap 0 nosegneg" to
"hwcap 1 nosegneg" along with other things which sound important and may
or may not be related to this issue.
The current bug has been marked "Fix Released"
This bug was fixed in the package eglibc - 2.10.1-0ubuntu9
---
eglibc (2.10.1-0ubuntu9) karmic; urgency=low
* debian/sysdeps/i386.mk: cherrypick fix from Debian, lost somewhere along
the way, that prevents /etc/ld.so.conf.d/xen.conf being added to the
libc6-xen package. LP:
** Package changed: linux (Ubuntu Karmic) => eglibc (Ubuntu Karmic)
** Changed in: eglibc (Ubuntu Karmic)
Assignee: John Johansen (jjohansen) => Steve Langasek (vorlon)
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Karmic i386 EC2 kernel emulating unsupported memory accesses
https://bugs.launchpad.net/bugs/427288
You received this b
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=499366 suggests that
the problem may be that this should be 'hwcap 1 nosegneg', not 'hwcap 0
nosegneg'.
The libc6-xen package is supposed to ship the file
./etc/ld.so.conf.d/libc6-xen.conf. The Ubuntu package is missing this
file.
** Bug watch add
current arch/x86/vdso/vdso32/note.S in linux-ec2 is doing this instead:
ELFNOTE_START(GNU, 2, "a")
.long 1 /* ncaps */
#ifdef CONFIG_PARAVIRT_XEN
VDSO32_NOTE_MASK: /* Symbol used by arch/x86/xen/setup.c */
.long 0 /* mask */
#else
Explanation of how the 'nosegneg' hwcap is supposed to work is found
here:
http://lkml.org/lkml/2007/4/24/3
Upstream patch is here:
http://lkml.org/lkml/2007/4/23/339
>From my testing, the linux-ec2 kernel does *not* set this hwcap in its
vdso, therefore there's nothing to tell ld.so to use the
On Fri, Sep 11, 2009 at 08:13:57PM -, Eric Hammond wrote:
> I may be biased (ok yes, I am biased) but it seems to me that if Xen
> needs to be configured differently than KVM, then it should be and we
> should be building separate images for EC2 and UEC. The EC2 images for
> Ubuntu should be t
The xen-divert-tls-libc solution requires the user to know that special
tweaking has been done to the system and causes problems in certain
libc6 upgrades which require specialized manual intervention not
necessary on standard Ubuntu. Remember that "upgrade" is a common
practice when running EC2 i
I may be biased (ok yes, I am biased) but it seems to me that if Xen
needs to be configured differently than KVM, then it should be and we
should be building separate images for EC2 and UEC. The EC2 images for
Ubuntu should be the best EC2 images possible without compromise.
I can understand the
some more information
on the same system described above, doing additional things removes the
warning:
$ echo 'hwcap 0 nosegneg' | sudo tee -a /etc/ld.so.conf.d/libc6-xen.conf
$ sudo ldconfig
$ sudo apt-get --purge remove libc6-i686
Eric pointed at
-
http://groups.google.com/group/ec2ubuntu/b
I did a quick test to see if simple installation of libc6-xen would solve
this issue. It appears not. See below for details:
[localsys]$ ec2-run-instances --user-data foo \
--kernel aki-9c04e4f5 --ramdisk ari-9e04e4f7 ami-3520c05c
# note '--user-data foo' is just to work around bug 419306
[l
The next thing to be done here is to test if this bug is fixed with
libc6-xen (http://packages.ubuntu.com/karmic/libc6-xen).
I will test that.
libc6-xen depends on libc6 and says "will be selected instead when
running under Xen. " . Hopefully that means no negative affect if this
package is inst
** Changed in: linux (Ubuntu Karmic)
Status: New => Triaged
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>From Eric Hammond:
| I ended up with the following code when I build images for EC2;
| not sure if it fixes the bug just mentioned:
| http://paste.ubuntu.com/268982/
|> chroot $imagedir apt-get install -y libc6-xen
|> echo 'hwcap 0 nosegneg' > $imagedir/etc/ld.so.conf.d/libc6-xen.conf
|>
** Also affects: linux (Ubuntu Karmic)
Importance: Undecided
Assignee: John Johansen (jjohansen)
Status: New
** Changed in: linux (Ubuntu Karmic)
Milestone: None => ubuntu-9.10-beta
** Changed in: linux (Ubuntu Karmic)
Importance: Undecided => High
--
Karmic i386 EC2 kerne
** Tags added: ec2-images
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Karmic i386 EC2 kernel emulating unsupported memory accesses
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ht
This appears to have 2 potential fixes.
1. is a kernel patch that disables fixup_4gb_segment in the kernel (attached)
2. is having glibc built with -mno-tls-direct-seg-refs
Some relevant links with more information on this.
http://wiki.xensource.com/xenwiki/XenSpecificGlibc
http://wiki.xensourc
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