Re: [Kernel Bug] INFO: rcu detected stall in count_memcg_event_mm

[Shakeel Butt]

Hi Longxing,

Thanks for the report.

On Tue, Jun 09, 2026 at 07:57:56PM +0800, Longxing Li wrote:
> Dear Linux kernel developers and maintainers,
> 
> We would like to report a new kernel bug found by our tool. INFO: rcu
> detected stall in count_memcg_event_mm. Details are as follows.
> 
> Kernel commit: v5.15.189

This is an old kernel, can you reproduce with the latest kernel? Also at the
high level this seems like CPU starvation. Can you also describe your system and
the workload/test which is trigerring this issue?