linux-kernel - Re: [PATCH 1/2] slab: __GFP_ZERO is incompatible with a constructor

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Message-ID: <alpine.DEB.2.20.1804101203320.29042@nuc-kabylake>
Date:   Tue, 10 Apr 2018 12:04:38 -0500 (CDT)
From:   Christopher Lameter <cl@...ux.com>
To:     Matthew Wilcox <willy@...radead.org>
cc:     linux-mm@...ck.org, Matthew Wilcox <mawilcox@...rosoft.com>,
        Pekka Enberg <penberg@...nel.org>,
        David Rientjes <rientjes@...gle.com>,
        Joonsoo Kim <iamjoonsoo.kim@....com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-kernel@...r.kernel.org, Jan Kara <jack@...e.cz>,
        Jeff Layton <jlayton@...hat.com>,
        Mel Gorman <mgorman@...hsingularity.net>,
        stable@...r.kernel.org
Subject: Re: [PATCH 1/2] slab: __GFP_ZERO is incompatible with a
 constructor

On Tue, 10 Apr 2018, Matthew Wilcox wrote:

> Are you willing to have this kind of bug go uncaught for a while?

There will be frequent allocations and this will show up at some point.

Also you could put this into the debug only portions somehwere so we
always catch it when debugging is on,
'