Hi Naresh, On Fri, Jul 11, 2025 at 12:11 PM Naresh Kamboju <naresh.kamb...@linaro.org> wrote: > > Regressions on boot failure observed in builds with CONFIG_PREEMPT_RT=y > and CONFIG_LAZY_PREEMPT=y enabled on multiple platforms running the > Linux next-20250710. > > Kernel stalls and RCU preempt self-detected stalls reported. > Boot log shows CPU stalls and failure as below. > > Test environments: > - Ampere Altra > - rk3399-rock-pi-4b > - x86_64 > > Regression Analysis: > - New regression? Yes > - Reproducibility? Yes > > Boot regression: next-20250710 rcu_preempt self-detected stall on CPU > rcu_preempt_deferred_qs_handler > > Reported-by: Linux Kernel Functional Testing <l...@linaro.org> >
Thanks for the report. We saw the same issue recently. Here is the fixed commit: https://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux.git/commit/?h=next&id=2e154d164418e1eaadbf5dc58cbf19e7be8fdc67 I have pushed it to rcu next branch: https://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux.git/log/?h=next - Neeraj
