Re: [7.0-rc1] codetag: kernel warning "alloc_tag was not set" during boot

[Harry Yoo]

On Mon, Feb 23, 2026 at 06:18:32PM +0100, Vlastimil Babka wrote:
> On 2/23/26 16:51, David Wang wrote:
> > Hi,
> > 
> > When upgrade to 7.0.0-rc1, caught a kernel WARN during boot:
> 
> Would this possibly help? (it probably shouldn't but let's see)
> https://lore.kernel.org/all/20260223075809.19265-1-harry.yoo@xxxxxxxxxx/

I think it could probably help.

While x86's TSO memory model does not reorder loads after loads and
stores after stores, the compiler is free to reorder
READ_ONCE(slab->obj_exts) after loading slab->stride.

-- 
Cheers,
Harry / Hyeonggon