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From:   Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To:     Yimin Deng <yimin11.deng@gmail.com>
Cc:     linux-rt-users@vger.kernel.org
Subject: Re: Oops or bad page in page_alloc.c
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On 2022-05-12 11:55:49 [+0800], Yimin Deng wrote:
> Hi Sebastian,
Hi Yimin,

> Thanks a lot for your quick reply!
> 
> CONFIG_HAVE_PREEMPT_LAZY=y
> CONFIG_PREEMPT_NONE=y
> # CONFIG_PREEMPT_VOLUNTARY is not set
> # CONFIG_PREEMPT__LL is not set
> # CONFIG_PREEMPT_RTB is not set
> # CONFIG_PREEMPT_RT_FULL is not set
> 
> CONFIG_SLAB=y
> # CONFIG_SLUB is not set
> # CONFIG_SLOB is not set
> 
> CONFIG_PREEMPT_RT_FULL is not enabled, neither CONFIG_SLUB. I think
> it's not related to the issue fixed in f1aca90802af9 ("Revert "slub:
> delay ctor until the object is requested""). We share the kernel
> source code but using different configuration on different products.
> The applications on this product are non-RT applications.

If you are not using PREEMPT_RT at all then just remove the PREEMPT_RT
patch. Then you will know if this error comes from the patch or not.
It might be something that effects !RT configurations.

> B.R.
> Yimin

Sebastian