Public bug reported:
1) The release of Ubuntu you are using, via 'lsb_release -rd' or System ->
About Ubuntu
Description: Ubuntu 14.04.5 LTS
Release: 14.04
2) The version of the package you are using, via 'apt-cache policy pkgname' or
by checking in Software Center
Ubuntu 4.4.0-111.134~14.04.1-generic 4.4.98
qemu-system 2.0.0+dfsg-2ubuntu1.36
3) What you expected to happen
The system should not have crashed
4) What happened instead
The system crashed and reported CPU soft lockup errors.
Hi,
we had a system lock up completely today, we noticed the following in the logs:
[84070301.087602] BUG: soft lockup - CPU#1 stuck for 23s!
[qemu-system-x86:30908]
[84070301.271530] BUG: soft lockup - CPU#8 stuck for 22s! [khugepaged:238]
[84070314.314615] INFO: rcu_sched detected stalls on CPUs/tasks: { 0} (detected
by 19, t=150024 jiffies, g=8647354832, c=8647354831, q=0)
[84070341.072534] BUG: soft lockup - CPU#1 stuck for 22s!
[qemu-system-x86:30908]
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "lspci.txt"
https://bugs.launchpad.net/bugs/1746860/+attachment/5047207/+files/lspci.txt
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https://bugs.launchpad.net/bugs/1746860
Title:
CPU Soft Lockup Causing Trusty (4.4.0-111-generic) to become
unresponsive
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