** Attachment added: "apport.linux.1rykX9.apport"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1746860/+attachment/5047464/+files/apport.linux.1rykX9.apport
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1746860
Title:
CPU soft lockup causing trusty (3.16.0-38-generic) to become
unresponsive
Status in linux package in Ubuntu:
Confirmed
Bug description:
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
linux-image-3.16.0-38-generic 3.16.0-38.52~14.04.1 (ksplice effective version
3.16.0-45-generic)
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]
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