Hi I can reproduce it in a ppc virtual cloud server provided by Oregon State University. Following is what I do: 1) curl -l https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/snapshot/linux-5.18-rc1.tar.gz -o linux-5.18-rc1.tar.gz 2) tar zxf linux-5.18-rc1.tar.gz 3) cp config linux-5.18-rc1/.config 4) cd linux-5.18-rc1 5) make vmlinux -j 8 6) qemu-system-ppc64 -kernel vmlinux -nographic -vga none -no-reboot -smp 2 (QEMU 4.2.1) 7) after 12 rounds, the bug got reproduced: (http://154.223.142.244/logs/20220406/qemu.log.txt) Cheers ;-) Zhouyi On Wed, Apr 6, 2022 at 3:47 PM Miguel Ojeda <miguel.ojeda.sandonis@xxxxxxxxx> wrote: > > Hi PPC/RCU, > > While merging v5.18-rc1 changes I noticed our CI PPC runs broke. I > reproduced the problem in v5.18-rc1 as well as next-20220405, under > both QEMU 4.2.1 and 6.1.0, with `-smp 2`; but I cannot reproduce it in > v5.17 from a few tries. > > Sadly, the problem is not deterministic although it is not too hard to > reproduce (1 out of 5?). Please see attached config and QEMU output. > > Cheers, > Miguel
