Mailinglist Archive: opensuse-virtual (68 mails)

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[opensuse-virtual] Xen43 guest lockups under high-load (BUG: soft lockup - CPU#2 stuck) after recent Xen43 updates
I run Opensuse 12.3 in a number of Xen VPS guests (@ Linode); Been
running stable for a long time.

After recent Xen client updates over the last couple of days, to

rpm -qa | grep -i xen | sort
ipset-kmp-xen-6.19_k3.7.10_1.1-32.1.x86_64
kernel-xen-3.7.10-1.16.1.x86_64
xen-libs-4.3.0_09-266.1.x86_64
xen-tools-domU-4.3.0_09-266.1.x86_64
xtables-addons-kmp-xen-2.3_k3.7.10_1.1-83.1.x86_64

under high-load (e.g. a src build) the client is fairly frequently, but
randomly locking up. THe only notice I have is that my SSH session to
the VPS simply disconnects ... no errors in the shell, or in system
message. @ the attached admin Serial console I see only the sudden
onest of,

...
[ 484.176059] BUG: soft lockup - CPU#2 stuck for 22s!
[sh:21413]
[ 512.176064] BUG: soft lockup - CPU#2 stuck for 23s!
[sh:21413]
[ 548.176060] BUG: soft lockup - CPU#2 stuck for 22s!
[sh:21413]
[ 576.176074] BUG: soft lockup - CPU#2 stuck for 22s!
[sh:21413]
[ 604.176055] BUG: soft lockup - CPU#2 stuck for 22s!
[sh:21413]
[ 632.176060] BUG: soft lockup - CPU#2 stuck for 22s!
[sh:21413]
...

and then it just loops/repeats continuously, requiring a hard-restart of
the VPS to get out of the loop, and recover.

Guest boot config is unchanged, and quite simple

cat /boot/grub/menu.lst
default 0
timeout 1
title PVGRUB
root (hd0)
kernel /boot/vmlinuz-xen root=/dev/xvdc noresume
xencons=hvc0 kbdtype=us text nofb selinux=0
apparmor=0 edd=off noshell showopts
splash=verbose
initrd /boot/initrd-xen

Appears to be a frequent xen-related issue

https://www.google.com/search?q=BUG+"soft+lockup"+xen

with not much conclusive resolution.

but since this just started with recent updates, I wanted to explore
what's changed that might affect this, rather than random attempts from
search.

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