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  1. Bug #2024599
  2. Comment #0

Comment 0 for bug 2024599

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Colin Ian King (colin-king) wrote : linux-image-5.15.0-1032-realtime locksup under scheduler test load

lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 22.04.2 LTS
Release: 22.04
Codename: jammy

uname -a
Linux jammie-amd64-efi 5.15.0-1032-realtime #35-Ubuntu SMP PREEMPT_RT Tue Jan 24 11:45:03 UTC 2023 x86_64
x86_64 x86_64 GNU/Linux

free
               total used free shared buff/cache available
Mem: 4013888 200984 3439012 1204 373892 3744628
Swap: 4014076 0 4014076

Running in a kvm-qemu, 8 cpus, cpu Intel Core Processor (Skylake, IBRS):

how to reproduce issue:

git clone https://github.com/ColinIanKing/stress-ng
sudo apt-get update
sudo apt-get build-dep stress-ng
sudo apt-get install libeigen3-dev libmpfr-dev libkmod-dev libxxhash-dev libglvnd-dev libgbm-dev
cd stress-ng
make clean
make -j 8
sudo ./stress-ng --class scheduler --all 1 -v --vmstat 1 -t 30m

..wait for all the stressors to get invoked, system becomes unresponsive, can't ^C stress-ng, can't swap consoles on the VM, appears to be hard locked.

cd stress-ng