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Tue, 10 Apr 2018 13:04:41 -0400 Received: from resqmta-ch2-06v.sys.comcast.net ([69.252.207.38]:44534 "EHLO resqmta-ch2-06v.sys.comcast.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751589AbeDJREl (ORCPT ); Tue, 10 Apr 2018 13:04:41 -0400 Date: Tue, 10 Apr 2018 12:04:38 -0500 (CDT) From: Christopher Lameter X-X-Sender: cl@nuc-kabylake To: Matthew Wilcox cc: linux-mm@kvack.org, Matthew Wilcox , Pekka Enberg , David Rientjes , Joonsoo Kim , Andrew Morton , linux-kernel@vger.kernel.org, Jan Kara , Jeff Layton , Mel Gorman , stable@vger.kernel.org Subject: Re: [PATCH 1/2] slab: __GFP_ZERO is incompatible with a constructor In-Reply-To: <20180410155442.GA3614@bombadil.infradead.org> Message-ID: References: <20180410125351.15837-1-willy@infradead.org> <20180410155442.GA3614@bombadil.infradead.org> User-Agent: Alpine 2.20 (DEB 67 2015-01-07) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-CMAE-Envelope: MS4wfEocr3AJO2EAlOw6+AOBgDYuFAGN3oMqRazwgpfnGNFWv/g/1+rE2p78U2WIRi6ETRW9nqjm6R9Ya9Y4gHAArBRejFSjbs2MAWJ5R8FzC32DHKSOY4Rf omw/rpt/3Hl6w/oKvZ1e4phQwOjYgZdDcYkI1Qg+aV9BrpV9Bu5sngZeP/XC7x4sp9AzvLSjSJNIrPq5q1ctuW9+/Fo0w/86wfQSrAoF+jL1dhIh/PZZsRn8 LiBZAZ4aRRmupdiQSUdzSVehB6GvGwtZBZmLXXuJ9MlKzZuHm+m2oMwkO7Vpr8U4pSHXDluSyfgjKxwNhl8eCjZQjfpI0WsggFwIoVlUYQErOR93T2rNPOO8 DrchIVN3ARpzJ1206vwRK/Xwer6EdeT4bpoVqP3UmnO4MnT2Nx5D5SKaGQTeYtp5I51gpxk0TP3YHyYhoMTgKatQJCno23LdtylkApPcGBDAJzbXTpliivs6 Pd+nT/Ny3Uuhxkcczx2W3dKpjp7si+BhxndVAWFhG4kavDlg+rIIW00eH1k= Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 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, '