Public bug reported:
The fan of my laptop started going full-throttle and I ran htop to see
why. I see a /usr/libexec/fwupd/fwupd eating 100% CPU for 29:55
minutes.
According to ps -o pid,lstart,etime,cmd the process was started
yesterday at 22:44. The laptop was suspended yesterday at 23:15 and
woken up this morning at 09:03. The time now is 11:26, so it doesn't
seem to be directly related to the suspend.
perf top attributes all the time to libptrhead-2.31.so, in
__pthread_rwlock_wrlock.
pstack is unable to extract a stack trace:
86826: /usr/libexec/fwupd/fwupd
(No symbols found)
crawl: Input/output error
Error tracing through process 86826
0x7f1c6e8cbe4a: ????
The journal has some interesting messages from fwupd this morning, but I
hope apport will attach them.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: fwupd 1.3.11-1~focal1
ProcVersionSignature: Ubuntu 5.4.0-51.56-generic 5.4.65
Uname: Linux 5.4.0-51-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu27.9
Architecture: amd64
CasperMD5CheckResult: skip
Date: Fri Oct 16 11:22:23 2020
ExecutablePath: /usr/libexec/fwupd/fwupd
InstallationDate: Installed on 2020-10-08 (7 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
SourcePackage: fwupd
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: fwupd (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
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https://bugs.launchpad.net/bugs/1900107
Title:
fwupd is eating 100% CPU for 30 minutes
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