Date: Thu, 8 Feb 2018 14:48:52 -0500 From: Daniel Micay <danielmicay@...il.com> To: Matthew Wilcox <willy@...radead.org> Cc: Jann Horn <jannh@...gle.com>, linux-mm@...ck.org, Kernel Hardening <kernel-hardening@...ts.openwall.com>, kernel list <linux-kernel@...r.kernel.org>, "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com> Subject: Re: [RFC] Warn the user when they could overflow mapcount I guess it could saturate and then switch to tracking the count via an object pointer -> count mapping with a global lock? Whatever the solution is should probably be a generic one since it's a recurring issue.
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