linux-kernel - Re: [PATCH] x86/speculation/l1tf: fix overflow on l1tf_pfn

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Message-ID: <20180820154254.GM12066@tassilo.jf.intel.com>
Date:   Mon, 20 Aug 2018 08:42:54 -0700
From:   Andi Kleen <ak@...ux.intel.com>
To:     Michal Hocko <mhocko@...nel.org>
Cc:     Vlastimil Babka <vbabka@...e.cz>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H . Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Dave Hansen <dave.hansen@...el.com>, stable@...r.kernel.org,
        Adrian Schroeter <adrian@...e.de>,
        Dominique Leuenberger <dimstar@...e.de>
Subject: Re: [PATCH] x86/speculation/l1tf: fix overflow on l1tf_pfn_limit()
 on 32bit

> > BTW our much worse problems right now are crash reports on several 
> > stable kernels, especially with large pages 
> 
> Do you have any reference?


https://lkml.org/lkml/2018/8/17/546
https://bugzilla.redhat.com/show_bug.cgi?id=1618792       (this is 4.17, not 4.18)

(might be different problems. I wasn't able to reproduce the 4.17 one
so far)


-Andi