Re: [syzbot] [cgroups?] [mm?] WARNING in __mod_memcg_lruvec_state

Shakeel Butt
2024-04-14T04:44:09Z

On Thu, Apr 04, 2024 at 09:47:34PM -0700, Yosry Ahmed wrote:
[...]
> >
> > Probably an RT build where _irqsave doesn't disable IRQ?
>
> Yeah, that's possible. I don't have enough familiarity with RT to know
> for sure. Perhaps lruvec->lru_lock needs to be changed to a
> raw_spinlock_t? I am not sure if that's the correct course of action.

The kernel config does not have CONFIG_PREEMPT_RT enabled. However I
have not idea how irqs are getting enabled to raise this warning.