Re: [BUG] WARNING: CPU: 3 PID: 1 at mm/debug_vm_pgtable.c:493

[Steven Rostedt]

On Wed, 13 Oct 2021 09:40:11 +0530
Anshuman Khandual <anshuman.khandual@xxxxxxx> wrote:

> I have run this test on x86 platform many times before (although not recently)
> without any problem and never had this bug report before. Wondering if there
> are recent changes on x86 platform, causing these warning.

As noticed in my conversation with Linus, this warning was there before
your updates, as it was in 5.14-rc2.

> 
> Gavin,
> 
> Although unlikely, was there something on the series which might have
> changed pud_huge_tests() ?

Not sure. But my test box that triggers this is open now, and I'll add
Linus's debug patch and see if I can retrigger it.

-- Steve