** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Impish)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Focal)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Hirsute)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Focal)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1932117
Title:
Lots of hisi_qm zombie task slow down system after stress test
Status in kunpeng920:
New
Status in kunpeng920 ubuntu-18.04-hwe series:
New
Status in kunpeng920 ubuntu-20.04 series:
New
Status in linux package in Ubuntu:
New
Status in linux source package in Focal:
Confirmed
Status in linux source package in Hirsute:
New
Status in linux source package in Impish:
New
Bug description:
[Bug Description]
With focal 5.4 kernel, crypto driver does not clean up its created process
when calculation is done. Many zombie processes slow down system. e.g. Takes
more then 10sec for ssh connection.
[Steps to Reproduce]
1) Install Ubuntu 20.04 with GA (5.4) kernel
2) sudo apt install -y stress-ng
3) stress-ng --aggressive --verify --timeout 300 --metrics-brief --tz --times
--af-alg 0
4) ps aux | grep hisi_qm | wc -l
[Actual Results]
>100000
[Expected Results]
<100
[Reproducibility]
100%
[Additional information]
Can not reproduce with focal HWE (5.8) kernel.
[Resolution]
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