linux-kernel - Re: [PATCH 1/2] mm, slab: use frozen pages for large kmalloc

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <aDnj7QCvM1phrvEX@casper.infradead.org>
Date: Fri, 30 May 2025 17:59:25 +0100
From: Matthew Wilcox <willy@...radead.org>
To: Roman Gushchin <roman.gushchin@...ux.dev>
Cc: Vlastimil Babka <vbabka@...e.cz>, Christoph Lameter <cl@...ux.com>,
	David Rientjes <rientjes@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Harry Yoo <harry.yoo@...cle.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] mm, slab: use frozen pages for large kmalloc

On Thu, May 29, 2025 at 03:46:26PM +0000, Roman Gushchin wrote:
> > @@ -1549,6 +1549,8 @@ static inline void get_page(struct page *page)
> >  	struct folio *folio = page_folio(page);
> >  	if (WARN_ON_ONCE(folio_test_slab(folio)))
> >  		return;
> > +	if (WARN_ON_ONCE(folio_test_large_kmalloc(folio)))
> > +		return;
> >  	folio_get(folio);
> 
> I guess eventually we can convert them to VM_WARN_ON_ONCE()?

Eventually they go away